1. Most radical polymerizations are carried out with monosubstituted vinyl groups, rarely 1,2 substituted. Explain this and give an example for an exception to this rule.
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Hello, can you help me to solve this please? can you also do it by draw the molecules? thanks.
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- What is the basic mechanism of an Anionic polymer (acrylic acid based as carbomers) in regards to function and “activation”? How do they work and thicken?2. In free radical polymerization, the polymerization of CH,CH-CHOCOCH(allyl acetate) is very slow whereas that of CH, =CH-CD,OCOCH, is fast. Explain the reason,6. Nylon-11 is poly(Ω-aminoundecanoic acid). In the polymerization of Ω-aminoundec-anoic acid, H2N(CH2)10COOH, to produce this polymer, what weight fraction of the reaction mixture will have the structure –[-NH–(CH2)10–CO-]100– when 99% of the functional groups have reacted ?
- 2. Molecular weight data for some polymer are tabulated here. Compute (a) the number- average molecular weight and (b) the weight-average molecular weight. (c) If it is known that this material's degree of polymerization is 710, which one of the polymers listed in Table 14.3 is this polymer? Why? Molecular Weight Range (g/mol) 15,000–30,000 0.04 0.01 30,000–45,000 45,000–60,000 60,000–75,000 0.07 0.16 0.04 0.11 0.26 0.24 0.24 0.12 75,000–90,000 0.27 90,000–105,000 105,000–120,000 120,000–135,000 0.16 0.08 0.12 0.03 0.05(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.The rate law for addition of Br2Br2 to an alkene is first order in Br2Br2 and first order in the alkene. Does this information suggest that the mechanism of addition of Br2Br2 to an alkene proceeds in the same manner as for addition of HBr? Explain.
- Please provide detailed solution and give the explanation of the correct and incorrect option......Which of the following polymer structure the repeating units have no regular stereochemical configuration?II. Diels Alder Reaction in Polymerization. Diels Alder reactions can also be used to form important synthetic polymers, such as polyphenylenes and ladder polymers. One of the co-monomers must be a bisdiene while the other is the bisdienophile. DME, heat ? Polymerize C. Draw a tetramer of the above addition polymerization. D. Draw the repeating unit of the above addition polymerization using proper notation outlined in Section 17.1 in the Lab Manual.
- Polymers can be cross-linked using a variety of reactions that create connections between different parts of the same polymer chain. Consider the repeat unit of the polystyrene derivative shown below.The homopolymer formed from this monomer has a low ceiling temperature (meaning it readily reverts to its monomers) and is unstable. It can be cross-linked by adding the terephthaloyl chloride (shown below) and AlCl3. Modify the structures provided to draw the result of the reaction of one repeat unit of the polymer with one unit of this cross-linking compound. Do not include lone pairs.Polymers prepared by condensation polymerization are usually of high molecular weights, but the student has been finding difficulties to produce a high molecular weight polymer using this technique in the lab. Give two reasons why this might be the case.This polymer is composed of 2 monomer units: an acid chloride and an amine. In the box below, draw the structure of both monomers. (8-10 C (CH₂)6-C CH₂ 어 H n • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • Do not include lone pairs in your answer. They will not be considered in the grading. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. • Separate structures with + signs from the drop-down menu.