1. Write the structure of the monomer(s) used to synthesize the following nonvinyl polymers. a) b) -NH· CH2 CH2 0 CH2 CH2 CH2 CH2 CH21 -NH- (10 points) (10 points) c) Which of the polymers is synthesized via addition polymerization? Which of the polymers is synthesized via condensation polymerization? (5 points) n d) If the Mɲ of the polymers given in part a and b are 40000 Da, what are their degree of polymerization (DP) values? (10 points)
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- (CH2 (CH₂ n One or more of the monomers below are needed to make the polymer Choose which one(s). OH H H H H CH HO-(CH2)4--OH ONH2 H -(CH2)6-NH2 X H CIХ. The polymer below can be made by a cationic polymerization process. What is the monomer used and write a step-by-step mechanism for the cationic polymerization. You must show the reagent used in the initiation steps and you must show at least 3 chain propagation steps. No termination steps are required. OCH3 n11. Draw the repeating segment for the polymer formed from the reactions using the given monomer(s). (a) H₂C=CH₂ (b) CICH₂CH₂OCH₂CH₂CI+ (c) O=C=N- TICI4 (CH3CH₂)2AICI (d) HO- CH3 CH3 N. H -N=C=O + HOCH₂CH₂OH OH + & amine
- Q/ Give the IUPAC name for each ofthe following polymers? (-CH 2 CH 2 CH 0-) n HO(- C%H,NHCH,CH2NH-) H(-O-C4HgO-CO-C6H5CO-)OH (-CI-CH₂CH(COOH)-)3. Which of the following could be polymerized by cationic or anionic chain polymerization(or both or neither)? CN Ph он co,CH, Do(CH2) (CH) One or more of the monomers below are needed to make the polymer Choose which one(s). но- (CH2)4 O NH2-(CH2)6–NH2 CI O H H. CN
- Ch19. Aldehydes and Ketones: Nucleophilic Addition Reactions Nucleophilic Addition Reaction Aldehydes and ketones are reduced to yield 1° and 2° alcohols, respectively - Reduction (hydride attack: H): NaBH, or LIAIH, (stronger) _H 1) NaBH4 2) HⓇ - Grignard reagents (R-MgX) give alcohols MgBr 1) + - Addition of HCN yields cyanohydrins, RCH(OH)CEN NaCN 2) H₂0* HCNWhich of the following reactions follow Markovnikov's rule? O Cyclopropanation O Epoxidation O Free radical HBr addition O Halogenation O Halohydrin formation O Hydration O Hydrogenation O Hydroxylation O HX addition O Hydroboration-oxidation O Oxidative cleavage O Oxymercuration-demercuration O Cationic polymerization Anionic polymerization Radical polymerization(d) Another variation on this type of polymer is used in hair gels. In these, the polymer chains are cross-linked by a compound known as pentaerythritol. но- OH но- OH pentaerythritol ( By what type of chemicat reaction are the cross-links in this polymer formed? (i) it is important that the gel should be easily washed out of hair What is it about the structure of the polymer that allows this to happen?
- Explain the effects the addition of glycerol (a triol) will have on the molecular architecture of the following polymerization reactions: a) Condensation polymerization of terephthalic acid + ethylene glycol b) Condensation polymerization of 6-hydroxyhexanoic acidCationic polymerization of alkenes is initiated by H* to form carbocations. An unstable alkane yields a very exothermic reaction during its hydrogenation. O Both statements are true. O Both statements are false. O Only the first statement is true. O Only the second statement is true. Which of the following is the major product from the given reaction below? O O HO HO. HO OH OH H₂O H₂SO4"Waterproof" nylon garments have a coating to prevent water from penetrating the hydrophilic fibers. The structure of a common nylon is shown below. H. H. Nylon-6,6 1st attempt See Periodic Table O See Hint Which structural features/groups in nylon-6,6 make it hydrophilic? Groups (5 items) (Drag and drop into the appropriate area below) Cof CH2 Nof NH Hof NH Hof CH2 O of C=O Categories Hydrophilic Hydrophobic Drag and drop here Drag and drop here