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826 Chapter 27
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step-growth polymer
a polymer that is made by combining two molecules while removing a small
(condensation polymer)
molecule (usually water or an alcohol).
syndiotactic polymer
a polymer in which the substituents regularly alternate on both sides of the fully
extended carbon chain.
synthetic polymer
a polymer that is not synthesized in nature.
thermoplastic polymer
a polymer that has both ordered crystalline regions and amorphous non-crystalline
regions.
thermosetting polymers
cross-linked polymers that, after they are hardened, cannot be remelted by heating.
urethane
a compound with a carbonyl group that is both an amide and an ester.
(carbamate)
NHR
RO
C
O
vinyl polymer
a polymer in which the monomer is ethylene or a substituted ethylene.
vulcanization
increasing the flexibility of rubber by heating it with sulfur.
Ziegler–Natta catalyst
an aluminum-titanium initiator that controls the stereochemistry of a polymer.