| Summary: | 碩士 === 國立中央大學 === 化學工程學系 === 84 === Abstract The major purpose of this study is familiar with
group transfer polymerization (GTP) and tried to synthesize
diblock copolymer by GTP. For our synthesis experiment ,we
elected to use methyl ethacrylate(MMA) and dimethylaminoethyl
methacrylate (DMAEMA). At first, research the effect of
residuary reactant initiator on polymerization. Then research
the effect of reaction conditions on polymerization. The
results show the obvious increase of molecular weight and
molecular weight distribution as initiator includes a little
n-butyllithium,lithium diisopropylamine and
trimethylchlorosiline in polymerization reaction. If initiator
includes a little diisopropylamine,methyl isobutyrate,diether
etheranhydrous,it has no effect for molecular weight and
molecular weight distribution. GTP polymerization is an
exothermic reaction，it shows reaction end point as reaction
temperature decreases to the original point，and molecular
weight and molecular weight distribution have no more
variation. Initiator quantity gets inverse ratio to molecular
weight，but it has no effect to molecular weight distribution.
It can proceed reaction in the allowable concentration ratio of
catalyst and initiator，molecular weight distribution will
increase as catalyst uses much more than it needs. It can
proceed reaction in the allowable temperature range，the
temperature has no effect to molecular weight and molecular
weight distribution. This experiment of GTP method can
polymerize the block copolymer of narrow molecular weight
distribution. Keywords:group transfer polymerization(GTP),
block copolymer, methyl methacrylate,
dimethylaminoethyl methacrylate,
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