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Microstructure of polymers obtained by cationic polymerization of endo-dicyclopentadiene

✍ Scribed by Yu Xing Peng; Jia Lin Liu; Lin Feng Cun

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
274 KB
Volume
34
Category
Article
ISSN
0887-624X

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✦ Synopsis

SYNOPSIS

endo-Dicyclopentadiene (DCPD) was polymerized by various cationic initiating systems in different solvents. IR and 'H NMR results show that four types of structural units are formed due to the corresponding addition modes: the addition on the norhornenic (NB) double bond generates unit I and rearranged unit 11, while the addition on the cyclopentenic (CP) double bond produces unit I11 and rearranged unit IV. The reaction medium has a stronger effect on the microstructure of the polymer (PDCPD) than initiating systems. The polymers prepared in toluene and n-hexane contain all four structural units, while the polymer produced in methylene chloride is composed of structural units I1 and IV.

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