Question

need help on polymer chemistry question

Determine which polymerization mechanism(s), i.e. radical, anionic, and cationic, can be used for the following monomers. Briefly explain your answer.

H2C= CHCEH H2C= C(CH3)2 H3CHC=CHCH

Answer 1

ANSWER

All your examples are follow different POLYMERISATION mechanism,

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L CH = CH CH = CH2 = ¢ Styrene polymerized styrene to polystyren with free radical mechanism ka ada Let's Explain mechanism. I kdar. Inia for ka pate content dt Rot Rate q dicom- -position Initiation of free Radical chain take place by addition of free Radical (R.) to a polystyrene (PS) styrene free radical free Radial styrene from benzroy / Resoxible R. & M - RM. freell Monomer) Monomers I New Free. Radical Radical RM & M RMM. thew free Radical)

RMM. + nm - RM, M. styrene macroradical 24 2R Mimo - R. Mati Mari R Dead polystyrene Dead Polystyrene cha 2. HACE C(CH3)2 = H₂C=C .. (Esablet (Isobutylene) -Isobutylene monomer polymerised by the Cationic polymensatin mechanism . BE t Heo H +(BFjOf Lewis Lewis Catalyst cocatalyst मचव Bay. . (cocatalyst) complex. clhg aty Clog Ht ct s Hq Cacco chy - c-cla- ct Cha Carbocestion (9) - toz c Repet adelition CHI-C-Cha - cycle-ct (Propagation) ugdn Macro Carbocation altoz t 3 Teacher's Signature ...

elz -C Tat- atz L PolyEso butylene Cat In CH2 3. H₂ CHC=CHCHR cita atz trans - but-n-ere In the polymerization, trans- 2- butene gaire a high molecu - 1 or weight polymer having a microstructure with one methyl branch for every c-atoms. This polymerization mechanism can be explained by re-addition Reaction istet istead of a direct opening of double bond. сез CHRH 1. -CEGC-C- Hz This it-bond breaks open ta etty с — С. E- Tether's Signare.... LH Chon