Section 2 - Polyesters: Step Growth Polymerization
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12 Terms
ester
Polyesters have a ___ functional group.
plastic
PET is thermo_____
mechanical and chemical resistance, strength, gas and moisture barriers, and electrical insulation
PET has excellent…
PET polyester
____ is the dominant fiber in the global textile industry.
aromatic
PET products are difficult to dye, they require a high temperature and pressure due to their ____ structures.
carboxylic acid and alcohol
Polyesters are synthesized from ___ and ___ monomers.
removal of by-product
What is necessary to drive the esterification reaction to higher products?
terephthalic acid, terephthaloyl chloride, or dimethyl terephthalate
PET synthesis can be from ethylene glycol and _____, _____, or _____
low
A limitation of polycondensation of terephthalic acid and ethylene glycol is that it produces ____ MW polymers
catalyst
An advantage of polycondensation of terephthaloyl chloride and ethylene glycol is that is doesn’t require a ____
a corrosive byproduct
A drawback of polycondensation of terephthaloyl chloride and ethylene glycol is that it releases ____
dimethyl terephthalate and ethylene glycol
what are the reactants for the industrial method of preparation PET