DP Chemistry Questionbank

Fermentation of sugars from corn starch produces propane-1,3-diol, which can be polymerized with benzene-1,4-dicarboxylic acid to produce the PTT polymer (polytrimethylene terephthalate).

(i) Draw the molecular structure of each monomer.

(ii) Deduce the name of the linkage formed on polymerization between the two monomers and the name of the inorganic product.

Deduce the repeating unit of the polymer and the other product of the reaction.

State the class of polymer to which PETE belongs.

Suggest, giving one reason, whether this is an addition or condensation reaction.

Identify the type of intermolecular bonding that is responsible for Kevlar^®’s strength.

Draw the structure of the monomer from which nylon-6 is produced by a condensation reaction.

Distinguish between the manufacture of polyester and polyethene.

Repeating units of several polymers are listed.

The infrared (IR) spectrum of one of these polymers is shown.

Deduce, giving a reason, the name of this polymer and its Resin Identification Code (RIC), using sections 26 and 30 in the data booklet.

State one factor considered when making green chemistry polymers.

Classify polybutadiene as either an addition or condensation polymer, giving a reason.

Outline, giving a reason, how addition and condensation polymerization compare with regard to green chemistry.

Draw the full structural formula of the organic functional group formed during the polymerization of the two reactants below.

Draw the structure of the monomers of Kevlar^® if the by-product of the condensation polymerization is hydrogen chloride.