is polystyrene a condensation polymer

The invention herein provides a silicone polymer emulsion comprising: a) a silicone polymer and b) a surfactant and a liquid continuous phase comprising a diol wherein the diol comprises from about 25 to about by weight of the continuous phase Further provided is a method of making a condensation polymer/silicone polymer blend comprising the steps of: a) preparing a silicone/polymer A very small number of condensation polymers can be depolymerized so that the monomers can be recovered and re-used Thermopolymers can be melted and pelletized but those of widely differing types must be treated separately to avoid incompatability problems Thermosets are usually shredded and used as filler material in recycled thermopolymers

Condensation (Step

poly(styrene-co-acrylonitrile) (SAN) addition polymerization a statistical copolymer Copolymerization incorporates monomers randomly •Polystyrene is processible but brittle •Polyacrylonitrile is strong but difficult to form •SAN combines advantages from both polymers Plastics vs Elastomers •Polymer flow can be prevented by

All polymers can be classified as either addition polymers or condensation polymers An addition polymer is one in which the molecular formula of the repeating structural unit is identical to that of the monomer e g polyethylene and polystyrene polystyrene widely used plastic it is a polymer of styrene Polystyrene is a colorless

Polymer (polysiloxane polystyrene) particles were prepared by polymerizing droplets of monomer (methyltrichlorosilane styrene) with vapor (water trifluoromethanesulfonic acid) in aerosol reactor The droplets were produced by either evaporation-condensation or nebulization The applicability of the droplet production methods depends on the nature of the polymerization systems In the step

Polystyrene supported polyethylene glycol was used as catalyst in the condensation reaction of citral and acetone yield of pseudoionone was 77 4% 70 Combustible: Generalgarbage plant waste plastics rubbers tires dying and finishing industrial waste plastic foam polystyrene

For example polystyrene-b-poly(methyl methacrylate) or PS-b-PMMA (where b = block) is usually made by first polymerizing styrene and then subsequently polymerizing methyl methacrylate (MMA) from the reactive end of the polystyrene chains This polymer is a diblock copolymer because it contains two different chemical blocks Triblocks tetrablocks multiblocks etc can also be made


Condensation formation of polyamide b Addition 2 For each of the following draw three linked monomer units of the polymer's structure: Monomer Polymer Structure a Teflon (nonstick coating) c Tedlar (used to weatherproof building materials) d Polyvinyl chloride (PVC) e Polystyrene

polymer (pŏl`əmər) chemical compound with high molecular weight consisting of a number of structural units linked together by covalent bonds (see chemical bond chemical bond mechanism whereby atoms combine to form molecules There is a chemical bond between two atoms or groups of atoms when the forces acting between them are strong enough to lead to the formation of an aggregate with

polymerization [pah-lim″er-ĭ-zashun] the combining of several simpler molecules (monomers) to form a polymer polymerization (po-lim'ĕr-i-za'shŭn) A reaction in which a high molecular weight product is produced by successive additions to or condensations of a simpler compound for example polystyrene may be produced from styrene or

Synthesis of α ω-dicarboxylic acid-terminated polystyrene (PS precursor polymer) (PS) In this study used solution condensation method The 1M and 2M-6M were added dropwise to the solution of PS precursor polymer in pyridine in the presence of triphenylphosphine dichloride Since there was a larger amount of PS precursor polymer than 1M and 2M-6M at the beginning of the reaction it

Dacron (For polymers such as PVC and polystyrene the identities of R and R' depend on the choice of reagent used to initiate the polymerization reaction ) Thus if the end groups can be analyzed the number of polymer molecules may be calculated using simple stoichiometric relationships This method for determining Mn is called end group

Polymers are macromolecules made up of repeating units called monomers Polymers can be synthesized through two types of polymerization reactions i e addition and condensation polymerization Polymers exist as amorphous or crystalline solids Polymers can be classified as organic inorganic synthetic and mixture of organic-inorganic polymers

Condensation polymers: The product formed when the monomers react together with the elimination of simple molecules like HO 2 ROH or NH 3 etc is called condensation polymer and the reaction or process involved is called condensation polymerization As the process involves the elimination of byproduct molecules the molecular mass of the polymer is not the integral multiple of the monomer

Polymer Chemical Structure The monomers in a polymer can be arranged in a number of different ways As indicated above both addition and condensation polymers can be linear branched or cross-linked Linear polymers are made up of one long continuous chain

Difference Between Homopolymer and Copolymer –

Polyethene PVC Polystyrene Delrin Polypropylene What is Copolymer? The copolymer is the polymer that is made up of two different kinds of monomers It produces by condensation polymer Monomers should have unsaturation The copolymer has a complicated structure The copolymer has better mechanical properties The copolymer has better oxidation resistance The copolymer has good

polystyrene (non-polar non hydrogen bonding) while ethanol (polar hydrogen bonding) is not Crosslinked polymers are insoluble although they may swell through solvent absorption if placed in a solvent with similar properties Nylon 6 10 Nylon is an unbranched polymer which can be prepared by a condensation reaction between a diamine H 2 N

Human DNA is a polymer with over 20 billion constituent atoms Proteins made up of amino acids and many other molecules that make up life are polymers They are the largest and most diverse class of known molecules and even include plastics Human DNA is a polymer with more than 20 billion constituent atoms Monomers are molecules typically about 4-10 atoms in size and are reactive in that

Polystyrene comes in three forms: Syndiatactic Atactic and Isotactic They consist of long hydrocarbon chains with a phenyl group connected to every other carbon atom The Syndiatactic form is highly regular and crystalline Atactic polystyrene is irregular and amorphous (disordered) and the

Water vapor surrounding a hygroscopic pellet is absorbed into the pellet As the vapor pressure within the pellet increases to equal the vapor pressure surrounding the pellet equilibrium occurs This is referred to as moisture equilibrium When an environment of hot dry air surrounds a wet

Spontaneous condensation in DNA-polystyrene-b-poly(l-lysine) polyelectrolyte block copolymer mixtures MPS-Authors Lbbert A MPI for Polymer Research Max Planck Society External Ressource No external resources are shared Fulltext (public) There are no public fulltexts stored in PuRe

Polystyrene is a hard and transparent polymer which is ideal for food containers Polystyrene can also be readily foamed to create packing material or thermal insulators Styrofoam is the trade name given to foamed polystyrene A second type of polymerization reaction is known as a condensation reaction In a condensation

In step growth or condensation polymerization the polymer is formed in a stepwise manner with the loss of simple molecules like HzO alcohol etc Example : Polyamides like Nylon 6 6 Polyesters etc (b) Sulphur introduces sulphur bridges or cross-links between polymer chains thereby imparting more tensile strength elasticity and resistance to abrasion

a) Would you expect polystyrene to be a stiff or a pliable polymer? b) What kind of synthesis is used in the production of polystyrene from styrene monomers? Addition polymerization condensation polymerizaton or anionic polymerization? c) Calculate the degree of polymerization n of polystyrene with a molecular weight of 3 091 x 10^6 g/mol 2

a) Would you expect polystyrene to be a stiff or a pliable polymer? b) What kind of synthesis is used in the production of polystyrene from styrene monomers? Addition polymerization condensation polymerizaton or anionic polymerization? c) Calculate the degree of polymerization n of polystyrene with a molecular weight of 3 091 x 10^6 g/mol 2


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