Microflow-System-Controlled Anionic Polymerization of Styrenes

Anionic polymerization of styrene using sec-BuLi as an initiator was conducted in a microflow system. A high level of molecular-weight distribution control was achieved under easily accessible conditions, such as at 0 °C (M w/M n = 1.08) and 24 °C (M w/M n = 1.10). The polymerization of styrene deri...

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Bibliographic Details
Published in:Macromolecules 2008-09, Vol.41 (17), p.6322-6330
Main Authors: Nagaki, Aiichiro, Tomida, Yutaka, Yoshida, Jun-ichi
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymerization
Preparation, kinetics, thermodynamics, mechanism and catalysts
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Summary:Anionic polymerization of styrene using sec-BuLi as an initiator was conducted in a microflow system. A high level of molecular-weight distribution control was achieved under easily accessible conditions, such as at 0 °C (M w/M n = 1.08) and 24 °C (M w/M n = 1.10). The polymerization of styrene derivatives having silyl, methoxy, silyloxy, alkynyl, and alkylthio groups on the benzene ring also took place in a highly controlled manner using sec-BuLi as an initiator. The end functionalization using chlorosilanes and block copolymerization were also achieved in microflow systems. The end functionalization with dichlorodimethylsilane led to the formation of a chlorosilane having a single polymer chain on silicon. The subsequent reaction with another active polymer chain gave block copolymers having two different polymer chains on a silicon core.
ISSN:0024-9297
1520-5835
DOI:10.1021/ma800769n