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- 2. What are the starting monomers for the following polymers? НС Н СIН CI | | | | | | -С-С-С-С-С-С | | | | | | нанана нең н с но | | | | | | III -С-С-С-С-С-С- | | | | | | НННННН d а b.4. Circle the monomer(s) used to synthesize Polymer A (Note: there may be more than one answer) Polymer A A fmmm 5 CH3 CH₂ Et CH3 Et CH3 Et CH₂ -CH₂ H3C. n B E Et Et H₂C F -EtFour sets of monomers are shown below. Which set A through D will lead to a polymer that is noticeably different from the others with respect to branching? Click on a letter A through D to answer. он H,N, но но `NH2 A он но но он OH OH он но но
- Question 4. Methylvinyl ketone (MVK) can undergo a polymerization reaction in the presence of AIBN initiator to produce a poly(methylvinyl ketone) polymer according to the scheme below. NEC H3C CH3 `N=N₂ CH3 CEN CH3 azobisisobutyronitrile (AIBN) CH3 methylvinyl ketone (MVK) heat CH3 H3C NEC n poly(methylvinyl ketone) a) Provide the mechanism for heat-induced decomposition of the AIBN initiator to produce a reactive radical species. CH3 NEC H3C `N = N heat CH3 CEN CH3 10 0-0 b) Provide a mechanism for the initiation step in the MVK polymerization reaction: c) Show the mechanism for the propagation step to form an MVK oligomer with n = 3: branched sidare tass xy ha etPolymerisation reactions usually occur with molecules which have o no carbon-carbon double bonds o lots of carbon-carbon double bonds o only carbon-carbon single bonds o only carbon-carbon triple bondsTwo adjacent polyester molecules are shown below. List and describe the factors that influence the transition temperature (= 69 °C) of this polymer. || " -C- || -O-C- HH | | -C-O-C-C- ... HH 0 H H || │| -c-o-c-C-... HH
- Name the probable monomers for the following polymer: H CH3H CH3H CH3H F H F H F T с-с-с-с-с-с-с-с-с-с-с-с | H H | | CH3H CH3H CH3Hн ____ нянн2. What are the starting monomers for the following polymers? HCIH CIH CI | | | | | | -С-С-С-С-С-С- H CH₂ H CH₂H CH₂ | | | | | | -С-С-С-С-С-С- | | | | | | НННННН H CIH CIH CI а. b.i. H₂N- -C= EN
- al Which one of the following polyenes has the highest heat of hydrogenation?Styrene derivatives such as A can be polymerized by way of cationic rather than radical intermediates. Cationic polymerization is an example of electrophilic addition to an alkene involving carbocations. a.) Draw a short segment of the polymer formed by the polymerization ofA.b.) Why does A react faster than styrene (C6H5CH=CH2) in a cationicpolymerization?What polymer is formed in each of the following reactions? Draw each polymer in polymer notation.n →> Catalyst Part B CH₂ Catalyst n CH H* 12D EXP. CONT. Marvin JS by ChemAxon A # H с N S CI Br - PF