Question

Critical Thinking Questions: 2) The polymerization of ethylene ("monomer") with a radical initiator follows the same chain reaction. Please write the mechanism (all arrows) from ethylene (==ethene) to polyethylene). Start with an initiator of R-R. After breaking the initiator bond to your radicals, use either radical for your 1"' reaction with ethylene. Indicate repeating reactions by multiple arrows. Write the final product in a common short form (follow the example for polystyrene); number of repeating units endgroups are either given as the iniator or he aoms of the monomer that are not part of he repeating unit (if any) repeating unit for polystyrene 3) Do the same thing as in question 2 for the methacrylate monomer to poly(methyl methacrylate) (PMMA): TTTT HO 4) Polyethylene is used for e.g. saran wrap. PMMA is used for glass lenses and shatterproof plastic "glass". Using structure-property-function arguments to explain why these polymers are good for these specific applications (base your argument on intermolecular forces between the polymer chains).

Please help look this over I just want to double check my answer! thanks!

Answer 1

Answer 2Answer 3

② Chain Initiation Steps RCR 2R (Initialer) Calkyl radical) n ② R't chache RCH=CH2 (ethylene) Chain Propagation Steps RCH - City & CH = CH R CH₂ CH, CH-Citta 13 pm 12 In 16 w 17 RECH₂ - CH2 CH₂ - CH₂ ② Chain Termurating Steps RECH-CH2CH-CH₂ >RM도대학내대로 대반했 RECH-CH2JCH-CH2 (Polyethene) Radical combination) n 18 CH CH-0

ACUUUY (3) Chain Initiation Steps RNR 2R Chain Propagation steps R't care ой (Monomer) R-CH2 the the c. R-CH-C. & cro R-CHG OH OH ОН ОИ OH Growing chain) Chain Terminating Steps the Ch Cth cth че си - С lo R-CH-G -CH-C-C-CH-COCKR OW OH 애애으 (PMMA)
Answer 4 Polyethene is a linear polymer by structure and consists of long and straight chains without any/fewer gaps in between the polymer chains. PMMA, on the other hand, is a branched-chain polymer having intermolecular forces in between which easily slide on each other.