I need 4 examples of polymers.?
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Types of Polymers:\n1. Addition Polymers:eg. Polyetethne, Polyvinyl Cholride,Teflon, Neoprene, Natural Rubber etc.\n2. Condensation Polymers:eg. Nylon66, Polysterene etc.
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silicone, carbon, nitrogen, sulphur ect. basically eny  elements from grp 4 - grp 7, all group 3 elements r amphoteric( both acid n base) n grp 1 n2 oxides r basic
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Polymer is a term used to describe a very long molecule consisting of structural units and repeating units connected by covalent chemical bonds. The term is derived from the Greek words: polys meaning many, and meros meaning parts [1]. The key feature that distinguishes polymers from other molecules is the repetition of many identical, similar, or complementary molecular subunits in these chains. These subunits, the monomers, are small molecules of low to moderate molecular weight, and are linked to each other during a chemical reaction called polymerization\n\nEpoxy:\n\nEpoxy or polyepoxide is a thermosetting epoxide polymer that cures (polymerizes and crosslinks) when mixed with a catalyzing agent or "hardener". Most common epoxy resins are produced from a reaction between epichlorohydrin and bisphenol-A.
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Polymers can be made through a process called ADDITION POLYMERISATION.\n\nPolymers are made from starting materials known as MONOMERS. In addition polymerisation, the monomer is a member of a family of compounds known as the ALKENES.\n\nDuring the polymerisation, the carbon to carbon double bond that exists in all alkenes is broken apart and the resulting molecules join together to form a straight chain molecule.\n\ne.g. the polymerisation of hundreds of ethene monomers will result in the polymer POLYETHENE.
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Here are a couple of examples:\n\nhttp://www.wellesley.edu/Biology/Concepts/Html/intramolecularbonding.html\n\nhttp://homepage.mac.com/stray/ib/chem/SSC/topic4.html\n\nhttp://www.esrf.fr/UsersAndScience/Publications/Highlights/2005/Materials/MAT11/
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Polymers are made when you have a single unit -- a monomer -- that can react with other units to form a long chain.  As such, an alkane such as methane or ethane cannot form a polymer, since there is no way for them to polymerize.\n\nHowever, and alkEne, such as ethylene -- with a chemical structure H2C=CH2 -- can polymerize, becuase the double bond can be broken and add two more monomers to start forming the chain.  This is how polyethylene is made.  The double bond can also participate in cross-linking with other chains, which alters the properties of the polymer.\n\nPolyesters are the result of the reaction of a di-carboxylic acid with a glycol.  Carbohydrate monomers can link up to form dimers, trimers, and longer polymers that create the backbones of many living systems.  Polyisoprene is the name for natural rubber -- another polymer.\n\nPolymer science is a huge, and growing subset of chemistry.
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solid\nliquid\ngas\nplasma
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See if these help\n\nhttp://www.pslc.ws/macrog.htm\n\nhttp://www-classes.usc.edu/engr/ms/125/MDA125/polymers_files/frame.htm
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Potential, kinetic, chemical, electrical, and thermal.
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Some plastics (called acrylics) have various acrylate compounds in them.\n\nMost common plastics have neither thioacrylate nor thiopropionate in them.
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learn more about different plastic materials
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Dupont is a global leader in polymers.  They are a good place to start, and their website can refer you to their distributors.
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Cube, pyramid, sphere, cone, cylinder.  There are others.
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You can find the general structures through simple web searches.  Remember some of these are polymers and can have different versions based on chain lengths and copolymers.
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The term is polymerization.  This can refer to the making of polysaccharides from simple sugars as mentioned above.  It can also mean the making of DNA or RNA from single nucleotides, the making of protein peptides from singel amino acids, or the making of polymer plastics from smaller maolecules.  The idea is that several monomers (free units that have a joining point at each end) can link together like a chain making a polymer.  There are more examples than the four here, but those four are the most common.
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This is a really broad, general question, so it's kinda difficult to answer.  The term 'acrylic' is very general and applies to all polymers and copolymers containing monomer units of the type 'acrylate' and 'methacrylate'.\n\nA typical example of an 'acrylic' is poly(methyl methacrylate) (PMMA), also known as Plexiglas.\n\nAcrylate and methacrylate monomers are polymerized (or copolymerized) by free-radical polymerization.  On the manufacturing scale, the monomers are added to a large reactor, an initiator is added (free-radical source such as peroxide, or azo initiator), and the mixture is heated until about 60-70% conversion.  This gooey mixture is then fed into a devolatizing extruder where the remaining 30-40% unreacted monomer is removed and recycled back into the reactor.  The polymer is then extruded (squeezed) through a circular die into a long string which is cooled to room temperautre.  This long 'acrylic' string is then fed into a 'chopper' (pelletizer) which cuts it up into small chunks (approx 3-4mm x 2-3mm).  These 'chunks' or pellets are then packaged in huge bags and shipped to customers.  The customers are usually smaller companies that make the familiar 'acrylic' articles you see every day.\n\nOf course, the process I talked about is only for one type ic acrylic.  There are many other types depending on the monomers used (ethyl acrylate, butyl acrylate, ethyl methacrylate, hydroxyethyl methacrylate, etc...)  Each monomer brings it's own properties to the final polymer.  Eg. copolymerization of butyl acrylate will make a 'gooier' acrylic (lower glass transition temperature).\n\n(I am a Ph.D. Polymer Chemist)
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http://images.google.ca/images?hl=en&q=polythene%20bags&ie=UTF-8&oe=UTF-8&sa=N&tab=wi\n\nThere are some picture examples at the link above.