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hello, can you solve this with the drawing of the molecule? thanks!
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- Why a particular polymerization reaction shows an exponential increase in reaction rate? Explain that polymerization reaction mechanism with suitable examples.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,2. In your own words, explain the difference between step-reaction polymerization and chain-reaction poly- merization. What is the advantage of this terminology over the more traditional addition and condensa- tion polymerization?
- One common type of cation exchange resin is prepared by polymerization of a mixture containing styrene and 1,4-divinylbenzene . The polymer is then treated with concentrated sulfuric acid to sulfonate a majority of the aromatic rings in the polymer. Q.) Explain how this sulfonated polymer can act as a cation exchange resinDiscuss TWO (2) most important differences between addition and stepgrowth polymerizations.6. Dacron is the brand name for the polymer that is made from ethane-1,2-diol and benzene-1,4-dicarboxylic acid. (a) When the two monomers combine, what type of reaction do they undergo and what molecule is eliminated? [1] (b) What is the name for the linkages that join the monomers together? [1] (c) Draw the monomers and the polymer of the reaction to create Dacron. [3]
- (a) Describe the polymerization of a blend of maleic anhydride and 2-methyl-1,3- propanediol in the presence of an acid catalyst. Draw a chemical reaction scheme showing the intermediate and final products that are formed. Describe the reaction conditions that you would use to maximize the yield of polymer. (b) Draw the structure of the polymer, showing the repeat unit and end groups, that is obtained when the mole ratio of maleic anhydride to diol is 0.95 (c) What is the number average molecular weight of the polymer of Part (b) when the extent of reaction of maleic anhydride is (i) 90% and (ii) 100%. (d) Describe how the structure of the polymer is altered when it is further reacted with styrene in the presence of peroxide.Chain transfer reactions can lead to branching for radical polymerizations. Draw themechanism for this process. ( polymer chemistry)Methyl acrylate and methyl methacrylate react with radical initiators (R•) as shown here. The difference in their reactivities in free radical polymerizations is dramatic. For example, methyl acrylate is less reactive with radicals than methyl methacrylate, but free radicals formed from methyl acrylate are more reactive than those formed from methyl methacrylate. In other words, C is more reactive than A, and B is more reactive than D. Explain these observations. Hint: Draw an energy diagram H H R• R-C C• H c=0 H CH3 CH3 Methyl acrylate for the two reactions. H CH3 CH3 R• + R-C C• H c=0 H. CH3 CH3 Methyl methacrylate
- Show the differences between the chain-growth and step-growth mechanisms of polymerization.When isobutylene undergoes radical-initiated polymerization, which of the following would be formed at the beginning of the process?Recycling of monomers instead of polymer may become an interesting option against environmental pollution. What conditions should be applied for such a degradation to be performed.