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- In addition to their use in water treatment, ion-exchange resins are used to extract Au, Ag, and Pt ions from solution. Oneof the most common resins consists of a polymer with abenzene-containing backbone to which sulfonic acid groups(–SO₃H) are then added. (a) What monomer can be used toprepare the polymer backbone? (b) This polymer typically con-tains 4–16% crosslinking. Draw the structure of the benzene-containing monomer used to crosslink the polymer.Below.molecclar weight dota for a tabutated PolyproPhlene metevial are . com Pute 1) The number average molecklar weight 22The weight average molecular weight. 3) The degree of Polymerization. Moleculor weiut Ramm g\mol 0.07 16r000 0m 24r000 2,000 .16 .24 oe0lenーeeCrs 0+20 30 そ 1000000127(A) The polymer known as polyvinyl acetate (PVAC) is used in paints and adhesives. Its structural formula is shown below. +CH;-CH¬ ... C=0 ČH3 1. Draw the structure formula of its monomer. 2. Write chemical equations that describe radical polymerization mechanism by which the PVAC could be prepared. 3. State whether head-to-tail or head-to-head orientation of monomer units in polymer chains predominates. Explain your answer by words and drawing.
- Br CuBr/PMDETA For the atom transfer radical polymerization of the following monomer, i.) provide structure of a 2-mer with an active chain end in the dormant form and ii.) the product terminated with hydrogenn.The following structure shows a condensation polymer of polyethylene terephthalate fibres ㅇ ㅇ || | || || || -C-( 0 )-c-o-CH,CH, - 0- C-( () )-c-0-CH,CH, - C-O -C-0-CH;CH,-O-C - What type of bond is present between the monomers? Halide Ether Amine Ester bond O Amide. At room temperature, classify the following materials as elastomers, TP or TS polymers:a) a lightly cross-linked copolymer with Tg = -45 oCb) a branched polypropylene of Tg = -8 oCc) epoxy resin matrix in advanced composites
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- 3. Draw the repeating unit for the condensation polymer formed from the following monomers: (a) C,H;CH(NH2)COOH (b) H2N(CH2);COOH (c) H2N(CH2)6NH2 and (d) CH2OHCH2OH and HOOCC6H&COOH CIOCC6H4COCIWhen Cationic polymerization occurs ? & how it occurs ?What is the degree of polymerization of each of the following polymers with molar mass 100,000 g/mol ? (a) polyacrylonitrile (b) polycaprolactam (c) poly(trimethylene ethylene-urethane) [Ans. (a) 1887; (b) 885; (c) 532] 1.3