polymers

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Flashcards on polymers, created by sferrier96 on 13/04/2015.
sferrier96
Flashcards by sferrier96, updated more than 1 year ago
sferrier96
Created by sferrier96 over 9 years ago
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Question Answer
diol +dicarboxylic acid = polyester
terylene = ethane-1,2-diol + benzene-1,4-dicarboxylic acid
is terylene a polyester,polypeptide or polyamide? polyester
polyamide= diaminoalkane (diamine) + dicarboxylic acid
name two polyamides nylon-6,6 and Kevlar
nylon-6,6 = 1,6-diaminohexane + hexane-1,6-dicarboxylic acid
Why is better to use an acyl chloride instead of a carboxylic acid when creating polyamides or polyesters? *faster reaction - the c-cl bond is more polar so the cl- is a better leaving group hence making the acyl chloride more reactive. *better yield - HCL gas is produced instead of water. Being a gas it can escape the mixture so the reaction goes to completion instead of an equilibrium being set up.
Kevlar = benzene-1,4-dicarboxylic acid + benzene-1,4-diamine
why are polyamides biodegradable but polyalkenes are not? Polyalkenes contain non-polar c-h bonds with cannot be attached by nucleophiles. In polyamides, the polar bonds (i.e. C-N and C-O bonds) which can be attacked by nucleophiles.
what do you add to a dicarboxylic acid to produce a diacyl chloride? PCl5
how to form a polypeptide add two amino acids together
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