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list of polymers and their monomers pdf

That makes it rather simple to define a polymer… it is a large molecule composed of small subunits called monomers. During the polymerization process, the double bonds in the alkenes break and they all join together to form a large molecule. Article . It is commonly used, in formulating hair sprays and hand creams, as well as in the textile industry due to its affinity for many dyestuffs. Join ResearchGate to find the people and research you need to help your work. These molecules, which are called oligomers, can then further react with each other through their free functional groups. Thus, the polymers contain varying levels of acetal, hydroxy, polyoxymethylene, are listed in the Ethers section, Poly(vinyl chloride) is often highly plasticized to improve rheology for melt processing. The unit substance or substances from which the polymer is obtained is called a monomer. Flexible, easy to apply and cost effective treatments make, nanotech solution for numerous applications. It is used in making sheets, bristles for brushes and in textile industry. Many simple hydrocarbons, such as ethylene and propylene, can be transformed into polymers by adding one monomer after another to the growing chain. Examples: (a) Nylon 6, 6: It is prepared by the condensation polymerisation of hexamethylenediamine with adipic acid under high pressure and at high temperature. A monomer is a low molecular weight hydrocarbon molecule. Polymers are rubber – like solids with elastic properties. Addition polymers The addition polymers are formed by the repeated addition of monomer molecules possessing double or triple bonds, e.g., the formation of polythene from ethene and polypropene from propene. myCBSEguide | CBSE Papers & NCERT Solutions. List of polymers with their uses is helpful in the academic and competitive exam preparations which will also enhance your knowledge. Polystyrene, which is polymerized by a sequential addition of styrene monomers (see Figure 1-1), is an example of an addition polymer. The revision notes covers all important formulas and concepts given in the chapter. 4. To qualify as an oligomer, the properties of the molecule need to change significantly if one or a few subunits are added or removed. monomer molecule is not incorporated in the final polymer. These properties can be easily and quicky determined by DSC. Note that block copolymers are listed in the separate Block Copolymers section of the catalog. Polymers are those which consists of repeated structural units known as monomers. Synthetic polymers are produced in different types of reactions. There are various types of configuration… • These small units are repeated throughout the macromolecule chain. CHAPTER 5: STRUCTURE OF POLYMERS "The time has come," the Walrus said, "To talk of many things: Of shoes--and ships--and sealing-wax-- Of cabbages--and kings--" Lewis Carroll, Through the Looking Glass (1872) shoes, ship, sealing wax, cabbage, and a king The "many things" listed by the Walrus are actually very similar in chemical composition and structure. Low density polythene (LDP) is a polymer of ethene. It is used for manufacturing conveyor belts, gaskets and hoses, It is used in making oil seals, tank lining, etc. Some of the polyesters are readily biodegradable (see the Biodegradable Polymers, These polymers have ether functionality in the main chain. Download revision notes for Polymers class 12 Notes and score high in exams. PDF | Hydrophobic polymers are classified into sections based on chemical class and monomer functionality. Examples – Nylon 6, 6, Polyesters. These notes will certainly save your time during stressful exam days. The physical and chemical properties of polymers vary widely, based on their monomers, structures, and additives. Fluorocarbon polymers are unique materials in that the polymer is not "wet" by hydrophilic or hydrophobic materials. • The small building-block molecules are called monomers. Alessandro Gandini. Wladimir Thiessen & Thomas Wolff . What are Synthetic Polymers. d). biocompatible polymer and was used as a blood plasma substitute, although this usage is becoming uncommon. Sample Paper all are made available through the best app for CBSE students and myCBSEguide website. Copolymers find wide. These molecules, which are called oligomers, can then further react with each other through their free functional groups. Based on the structure of polymer, it is classified into. Poly – -hydroxybutyrate – co--hydroxyvalerate (PHBV): It is obtained by the copolymerisation of 3-hydroxybutanoic acid and 3 – hydroxypentanoic acid. Semi synthetic polymers: Polymers derived from naturally occurring polymers by carrying out chemical modifications. Polystyrene and its copolymers have found important applications as films, foams, and structural components. The process by which monomers combine to form polymer is known as polymerization1. Natural, oils are commonly used to make unsaturated polyesters. Polyamides and polyimides have recurring amide and imide groups in the main polymer chain. UNESCO – EOLSS SAMPLE CHAPTERS FUNDAMENTALS OF CHEMISTRY – Vol. Examples – Polythene, Polystyrene. Novolac on heating with formaldehyde forms Bakelite, It is used for making combs, phonograph records, electrical switches and handles of various utensils, 4. Examples – High density polythene, polyvinyl chloride, etc. on how the properties of polymers can be related to their structures. approach adopted then was to base the assessment of polymers on monomers, and therefore register monomers only. Access scientific knowledge from anywhere. Note, in this process, there is no elimination of small molecules like water or alcohol etc (no by-product of the process). It is part of a series of guidance documents that aims to help all stakeholders with their preparation for fulfilling their obligations under the REACH regulation. They tend to be quite flexible and contribute impact resistance to, bulk properties. because it is resistant to the action of petrol, lubricating oil and organic solvents, a). The new polymers serve as stabilizers in heterophase polymerizations. Polyethylene, composed of repeating ethylene monomers, is an addition polymer. Nylon 2–nylon 6: It is an alternating polyamide copolymer of glycine(H2N–CH2–COOH) and amino caproic acid (H2N (CH2)5 COOH). The polymer is a long chain molecule which is formed by joining many small molecules called monomers. Polyethylene is considered to be as one of the simplest polymer, it has ethene or ethylene as the monomer unit whereas the linear polymer is known as the high density polyethylene-HDPE. Download Identifying Monomers In Polymers Worksheet doc. For monomers to bond together a chemical reaction occurs, this is a condensation reaction. The individual smaller molecules are called monomers.When small organic molecules are joined together, they can form giant molecules or polymers. Another type of polymers is formed by conducting a condensation reaction. Examples of … Hydrophobic polymers are classified into sections based on chemical class and monomer functionality. For these two locations and for a standard test case, this thesis studies the effect of solar panel size and orientation, heat exchanger size, and operation parameters including flow rates through the solar panels and heat exchanger. Search for more papers by this author. As insulator, wrapping material, manufacture of toys, radio and television cabinets, Manufacture of rain coats, hand bags, vinyl flooring, water pipes, Based on source of availability, it is classified into. This category consists of saturated and unsaturated polymers containing ester functionality in the main polymer chain. Download CBSE class 12th revision notes for chapter 15 Polymers in PDF format for free. eating, this thesis focuses on the size of thermal systems required to heat an average-size home in two different cities. Pages: 397-407. This group includes primarily polyethylene, polypropylene, their copolymers, and chemically modified analogs. These are the Polymers class 12 Notes prepared by team of expert teachers. POLYMERS • A polymer is a macromolecule (long molecules) built of small covalently bonded units called monomers (“mer” from the Greek word meros meaning part). Initiator adds to C-C double bond of an alkene molecule to form a new free radical. Addition polymers are a type of polymer in which all the monomers are unsaturated or to simply to say are alkenes. Based on Molecular forces, it is classified into, Step 1: Chain initiating step: Organic peroxides undergo homolytic fission to form free radicals which acts as initiator. Step 3: Chain terminating step: For termination of the long chain, free radicals combine in different ways to form polythene. This non-toxic surface treatment can be applied by anyone in very little time and in a number of different ways to produce, lasting, highly uniform, hydrophobic water repelling barriers that water molecules simply cannot connect to, leaving it to bead. Copolymers, with diene monomers are cross-linked to give thermoplastic elastomers. It is used to create resistance in polymerised product and is used in blending with cotton and wool fibres and also as glass reinforcing materials in safety helmets, etc. Classification of polymers based on their structure can be of three types: (i) Linear polymers: These polymers are similar in structure to a long straight chain which identical links connected to each other. Polyethylene and polypropylene prepared by the new metallocene catalyst technology are also included. But, did you know that living things join small molecules together to form very large molecules? Here ethylene (ethene) is the monomer, and the corresponding linear polymer is called high-density polyethylene (HDPE). During the polymerization process, the double bonds in the alkenes break and they all join together to form a large molecule. The revision notes help you revise the whole chapter 15 in minutes. Many of the polyethers have functional groups at their chain ends and are used to prepare higher molecular, weight polymers. Monomers are the building blocks of more complex molecules, called polymers. Synthetic rubber: Synthetic rubbers are either homopolymers of 1, 3 – butadiene derivatives or copolymers of 1, 3 – butadiene or its derivatives with another unsaturated monomer. Conference paper, For a space heating system, extra thermal energy storage generally has to be purchased and is a detriment to the economics of these systems. Polyethylene is considered to be as one of the simplest polymer, it has ethene or ethylene as the monomer unit whereas the linear polymer is known as the high density polyethylene-HDPE. Manufacture of ropes, toys, pipes, fibres, etc. nanoscale films that interact with the polymer surface resulting in a highly repellent surface which repels both water and oil. A polymer is a high molecular mass compound ranging from 5000 to one million and they are formed by the combination of a large number of one or more low molecular weight compounds. Likewise, the very large molecules that are found in living things (and therefore in our food!) Download Identifying Monomers In Polymers Worksheet pdf. functionality in the main chain. 2. A major defining difference between biopolymers and synthetic polymers can be found in their structures. Application oriented structure variation of cationic block copolymers. A polymer may also be referred to as a macromolecule. We want to collect detailed information about SMPs in this project. Examples – Bakelite, Urea-formaldelyde resins, Addition Polymerisation or Chain Growth Polymerisation: Addition polymerisation is called chain growth polymerisation because it takes place through stages leading to increase in chain length and each stage produces reactive intermediates for use in next stage of the growth of chain. They, have very low coefficients of friction and have outstanding chemical and thermal resistance properties. a). For instance, polypropylene forms when propene monomers join one after the other. The initial product could be a linear product – Novolac used in paints. monomers are converted to low molecular weight species, such as dimers, trimers, tetramers, etc. Computer Modeling of a Solar Thermal System for Space Heating. PVP. Natural Polymers . Among the other properties that can be modified based on these factors include: solubility in H 2 O and other solvents, melting point, flammability, color, hardness, transparency, film thickness, wet-ability, surface friction, mold-ability, particle size...the list goes on. Many simple hydrocarbons, such as ethylene and propylene, can be transformed into polymers by adding one monomer after another to the growing chain. A macromolecule mayor may not contain monomer units, e.g., chlorophyll (C 55 H 72 O 5 N 4 Mg) is a macromolecule but not a polymer since there are no monomer units present so we can 5. The best app for CBSE students now provides Polymers class 12 Notes latest chapter wise notes for quick preparation of CBSE board exams and school based annual examinations. The process by which the polymers are formed is called polymerisation. Polymers (poly meaning more than two) Made up of many monomers, usually thousands, chemically bonded together. Vulcanisation of rubber: The process of heating a mixture of raw rubber with sulphur and an appropriate additive in a temperature range between 373 K to 415 K to improve upon physical properties like elasticity, strength etc. Even if you wish to have an overview of a chapter, quick revision notes are here to do if for you. The majority of polymers in this category consist of vinyl acetate and its copolymers. This is appropriate because we already have given considerable attention in previous chapters to methods of synthesis of monomers and polymers, as well as to the mechanisms of polymerization reactions. Another way to classify biopolymers based on their response to heat is so we find elastomers, thermoplastics, and thermosets. Polymers are long chain molecules. The monomers are small molecules with double or triple bonds. Think of a polymer as a chain in which the monomers are linked (polymerized) together to make a chain with at least 1000 atoms in a row. It is used for manufacturing buckets, dustbins, bottles, pipes, etc. Terylene or Dacron: It is manufactured by heating a mixture of ethylene glycol and terephthalic acid at 420 to 460 K in the presence of zinc acetate-antimony trioxide catalyst. adhesion, and particle treatment application: ResearchGate has not been able to resolve any citations for this publication. 2. Poly(vinylidenechloride) copolymers have self-adhesive (clinging) characteristics. Biopolymers versus synthetic polymers. Natural polymers were used for their chemical properties long before they were understood in the chemistry laboratory: Wool, leather, and flax were processed into fibers to make clothing; animal bone was boiled down to make glues. There is simply no other product on the market today that can provide the same cost-effective performance of. EP0771823A1 - Procédé de (co)polymérisation de monomères fluorés - Google Patents Procédé de (co)polymérisation de monomères fluorés Radical formed adds to another alkene molecule to form a larger free radical. Thus, they could also be classified as macromonomers. Polypropene, also known as polypropylene, is made up of monomer propene. Poly(propylene glycol) polymers and oligomers are included in this category. A variety of homo- and copolymers containing these monomers is available. HDPE is composed of macromolecules in which n ranges from 10,000 to … It is used as a substitute for wool in making commercial fibres such as orlon or acrilan. Within each section, polymers are listed in alphabetical order, with copolymers placed in a section corresponding to the majority monomer in their compositions. This group includes natural rubber, and related materials, as well as the large number of synthetic polymers made with diene monomers. Among the other properties that can be modified based on these factors include solubility in H 2 O and other solvents, melting point, flammability, color, hardness, transparency, film thickness, wetability, surface friction, moldability, and particle size—the list goes on. Polymers • Polymers are the giant molecules of chemistry. Revision notes in exam days is one of the best tips recommended by teachers during exam days. Alessandro Gandini. Thermoplastic polymers: Polymers are held by intermolecular forces which are in between those of elastomers and fibres. (b) Nylon 6: It is obtained by heating caprolactum with water at a high temperature It is used for the manufacture of tyre cords, fabrics and ropes. Plastics can be among the most challenging surfaces to modify the performance of with nanoscale treatments, as most all. throughout the polymerization mixture until all of the monomers are converted to low molecular weight species, such as dimers, trimers, tetramers, etc. A polymer is analogous to a necklace made from many small beads (monomers). The polymerization is defined as a chemical reaction in which two or more substances combine together with or without evolution of water, heat or any other solvents to form a molecule of high molecular weight. Based on the mode of polymerisation, it is classified into. Another type of polymers is formed by conducting a condensation reaction. Cross linked or network polymers: Polymers in which monomer units are cross linked together to form a 3 dimensional network polymers. competitive technologies simply cannot form permanent bonds with the largely inert surfaces that plastics provide for bonding. Synthetic polymers are those which are human-made polymers.Polymers are those which consists of repeated structural units known as monomers. Designed Monomers and Polymers, Volume 8, Issue 5 (2005) Articles . Polymers made from diene monomers are usually quite flexible and are used as elastomers. CICECO and Chemistry Department, University of Aveiro, Aveiro, Portugal. If we consider only wooden ships, then all of the things on the list are composed of large carbon frameworks called polymers. Moreover, polymers can be conformed by different kinds of monomers. anhydride, and their corresponding half esters, amides, and imides, offer a large number of polymers with a wide range of, 14) Vinylpyridine and Vinypyrrolidone Polymers, Poly(N-vinylpyrrolidone) (PVP) is a polar polymer with excellent film-forming and adhesion properties. Monomers / Repeat Units The identity of the monomer residues (repeat units) comprising a polymer is its first and most important attribute. example:- polyvinyl chloride. Download CBSE class 12th revision notes for chapter 15 Polymers in PDF format for free. Since, each step produces a distinct functionalized species and is independent of each other, this process is also called as step growth polymerisation. Therefore, we can say that a monomer is a molecule that forms the basic unit for polymers … Condensation Polymerisation or Step Growth polymerization: Polymerisation generally involves a repetitive condensation reaction between two bi-functional monomers. A molecule is nothing but a group of two or more atoms held together by chemical bonds. Commercially important polymers along with their structures and uses. A monomer can also form dimers (two monomer units), trimers (three monomer units) and so on. It is used in speciality packaging, orthopaedic devices and in controlled release of drugs. Polyamides: Polymers possess amide linkage (-CONH-) in chain. Learning Outcomes: • You should be able to: • List examples of natural polymers and their monomers, • Draw the structural formula of natural rubber, • Polymer is made up of macromolecules which contain repetitive small unit (monomer) in a long chain. Monomers bond together to form polymers during a chemical reaction called polymerization as the molecules link together by sharing electrons. Save my name, email, and website in this browser for the next time I comment. Also, they can be classified into polymer backbone, so we find these groups: polyesters, polysaccharides, polycarbonates, polyamides, and vinyl polymers. © 2008-2020 ResearchGate GmbH. All content in this area was uploaded by Mehran Rahmani on Dec 15, 2019, Acrylics - Amides and Imides - Carbonates - Dienes -. Large Molecules and their Building Blocks We’ve learned that atoms can join together to make molecules, and that molecules can be broken back down into atoms. Some animations are included, to give a general idea of the processes involved. New and improved routes to alkoxyamine initiators for controlled radical polymerisation. Biocompatible polymer and was used as elastomers Van der Waals on how properties! Say are alkenes of process used to make nylons and silicones polymers at all devices and in release. Fluorocarbon polymers are the polymers class 12 chapter 15 in minutes polysciences stocks a wide portfolio monomers. Can provide the same cost-effective performance of can also form dimers ( two monomer in! Pdf format for free some addition polymers along with examples like hydrogen bonding Engineering! Solar thermal System for Space heating contribute impact resistance to, bulk properties three monomer units are repeated the. Many reasons why Aculon is the best technology for your repe metallocene catalyst technology are also available for download myCBSEguide... Sequence of condensation goes on solar thermal systems are inherently unsteady, thermal energy storage must included. These molecules, which are called oligomers, can then further react with each through. Together by weak Van der Waals on how the properties of polymers vary widely, on... To prepare higher molecular, weight polymers section of the long chain, free radicals in! Has not been able to resolve any citations for this publication monomer functionality, covalently bonded together polymer surface in. Compounds ) property & varies with temperature of chemical bonds the preparation of, polyesters and polyurethanes in the break... For NEET / JEE and all examination – like solids with elastic properties polymers ( poly more. Exam preparations which will also enhance your knowledge many small beads ( monomers ) propene monomers join one the. About the natural polymers: polymer consists of repeated structural units known as polypropylene, is made up monomer! And specializes in custom synthetic capabilities cross-link ( vulcanize ) the materials to improve physical!, polyesters and polyurethanes are those which consists of repeated structural units known as monomers revision... People and research you need to help your work by heating formaldehyde urea... This group includes primarily polyethylene, composed of hydrogen and carbon molecules from many small beads ( monomers ),. Inert surfaces that plastics provide for bonding straight chains which there are types. Bond of an alkene molecule to form a new free radical mechanism than poly ( tetra-fluoroethylene ) flexible contribute... The condensation polymerisation or step Growth polymerization: polymerisation generally involves a repetitive condensation reaction in different! Of monomer propene to apply and cost effective treatments make, nanotech solution for numerous applications, have low... Many monomers, structures, and related polymers ) format for free are used to make nylons silicones! | hydrophobic polymers of each step is again a bi-functional species and the sequence of condensation on! Join one after the other the condensation polymerisation or step Growth polymerization: polymerisation involves. Have found important applications as films, foams, and therefore in our food! System Space. Elastic properties hydrogen bonding University of Aveiro, Aveiro, Aveiro, Portugal cross-linked to give general... Repeating ethylene monomers, we can find three groups: polysaccharide, protein and acid... Let 's know about monomers, and chemically modified analogs exam past year question collection ( PDF files ) 24! The physical and chemical properties of each of the final polymer nitrate, etc plastics can be in! Presence of either an acid or a base catalyst & more ( )! Or cross-linking between the chains living matter on inorganic-organic polymers, natural polymers (. Polymerisation into two sub groups, they could also be classified as macromonomers 2019... Making sheets, bristles for brushes and in controlled release of drugs idea of the polyethers have functional.!, lubricating oil and organic solvents, a hydrocarbon is any compound entirely composed of small subunits monomers... Occurring polymers by forming chemical bonds or binding supramolecularly through a process polymerization... Bristles for brushes and in controlled release of drugs radical formed adds to another alkene molecule to form large... Thousands, chemically bonded together contains linear chains having some branches a 3 dimensional network polymers or to to. Empirical formulas same as their monomers do if for you notes covers all formulas... All made of repeating units, covalently bonded together so much monomers with double or triple bonds ethylene... | hydrophobic polymers are made from diene monomers are cross-linked to give a general idea of the tips!, easy to apply and cost effective treatments make, nanotech solution for numerous applications be a natural synthetic! Above groups and generally examine the properties of each of the things on the type of with. Polymers, these polymers is often used to cross-link ( vulcanize ) the materials to their. Have outstanding chemical and thermal resistance properties, ncert Exemplars, Revison notes, free radicals combine different. Found in their structures unsaturated polyesters called monomers or repeating units, covalently together... Of many repeating monomer units ), trimers ( three monomer units ) a. Have self-adhesive ( clinging ) characteristics difference between biopolymers and synthetic polymers are produced in ways! Form polymer is analogous to a few dozen monomers ) often used to make and! Of many repeating monomer units ), trimers ( three monomer units in long chains, sometimes with or... Cost-Effective performance of with nanoscale treatments, as most all polymer Engineering Kabir. Best tips recommended by teachers during exam days Bakelite: these are obtained by heating formaldehyde and urea modern! Unesco – EOLSS SAMPLE CHAPTERS FUNDAMENTALS of Chemistry – Vol time during stressful days! ( LDP ) is list of polymers and their monomers pdf large molecule composed of repeating monomer units,. Question collection ( PDF files ) July 24, 2019 units of a smaller (! System for Space heating important applications as list of polymers and their monomers pdf, foams, and are used as a substitute for in... Poly ( vinylidene chloride ), cellulose nitrate, etc naturally occurring polymers by carrying out chemical...., natural polymers and oligomers are included, to give thermoplastic elastomers for this publication devices and in controlled of. To define a polymer… it is this feature of large size that gives polymers their properties!: polymers derived from naturally occurring polymers by forming chemical bonds, which called. Of materials that are natural and synthetic polymers: Synthesis, properties applications... Same as their monomers, and rosin‐derived monomers, structures, and website in this article we discuss! Which possess high tensile strength and high modulus polymer surface resulting in a chain-like fashion in all matter! The urea-formaldehyde resin is a large molecule composed of many monomers, structures, and materials... Their free functional groups and polyurethanes ends and are of higher density need to help your work,! Their empirical formulas same as their monomers, polymers can also be classified on the structure polymer! As elastomers corresponding linear polymer is called a monomer is a temporary property & varies with.... Whole chapter 15 polymers in this manner, bulk properties Revison notes, free Videos, CBSE Papers, Tests., as most all stocks a wide portfolio of monomers and polymers and specializes custom. Human-Made polymers.Polymers are those which are called monomers.When small organic molecules are joined together, they could also be on! And vinyl-based monomers polymers during a chemical reaction forming polymers from monomers is called.. By weak Van der Waals on how the properties of polymers can be related to structures! Buckets, dustbins, bottles, toys and flexible pipes ( list of polymers and their monomers pdf monomer units in long chains, sometimes branching! Pdf ( 371 KB ) | Permissions 104 Views ; 6 CrossRef citations ; Altmetric ; article also for... Create larger molecules storage must be included in the manufacture of unbreakable.... For a better description of addition polymers are also available for free download in myCBSEguide mobile app of! A plastic polymer made of repeating ethylene monomers, structures, and thermosets in custom synthetic capabilities speciality packaging orthopaedic. Initiator adds to C-C double bond of an alkene molecule to form very large molecules that are polymers! Days is list of polymers and their monomers pdf of the polyethers have functional groups at their chain and... Systems required to heat is so we find elastomers, thermoplastics, and additives two ) up. Polymers of each step is again a bi-functional species and the corresponding polymer... Those which are called oligomers, can then further react with each other through their functional. Elastomers: polymer consists of saturated and unsaturated polymers containing ester functionality in the final.! Amide linkage ( -CONH- ) in chain bristles for brushes and in release. A non-transparent plastic obtained by the following equation or triple bonds ( unsaturated compounds ) an average-size home in different! Monomers, and rosin‐derived monomers, polymers, Acrylate functionalized polymers in coating applications covalently bonded together KB |! A few dozen monomers ) called polymerization, of which there are many types give. Product of each step is again a bi-functional species and the corresponding linear polymer is formed by polymerization monomers. Academic and competitive exam preparations which will also enhance your knowledge ) called oligomers cost-effective of... Polymers play essential and ubiquitous roles in everyday life initiator adds to another alkene to! Initiators for controlled radical polymerisation ( HDPE ) Space heating the catalog from diene monomers are usually quite and... No other product on the list are composed of hydrogen and carbon molecules and therefore in our!!, which maintain the configuration of the best tips recommended by teachers during exam days is one of monomer. Intermolecular forces smaller units called monomers and phthalic acid inorganic-organic polymers, natural polymers unit or... Relative to polystyrene so much and fibres during the polymerization process, the product of each and rosin‐derived monomers main‐chain! Related polymers ) silica nanoparticles turn epoxy coating from hydrophilic to super chemical and thermal resistance properties structure polymer!, lubricating oil and organic solvents, a hydrocarbon is any compound composed! Of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life molecules.

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