UNSPECIFIED (1996) Effect of the nature of the alkyl group of initiation and termination in R(3)Al/RLi initiation of methyl methacrylate. In: International Symposium on Ionic Polymerization, SEP 04-08, 1995, ISTANBUL, TURKEY.

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Abstract

The polymerisation of methyl methacrylate has been investigated with mixed aluminium and lithium alkyls. The use of sterically hindered aluminium alkyls such as triisobutyl aluminium in conjunction with tert-butyl lithium leads to living polymerisation at 0 degrees C with little complications from secondary initiation or premature termination. The use of less bulky alkyl groups on either aluminium or lithium leads to both secondary initiation, as observed by the formation of high molecular weight polymer by GPC-LALLS and termination via cyclisation as observed by MALDI-TOF-MS. The initiator efficiencies, even when living polymerisation ensues, are considerably less than 100%.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	Q Science > QD Chemistry
Journal or Publication Title:	MACROMOLECULAR SYMPOSIA
Publisher:	HUTHIG & WEPF VERLAG
ISSN:	1022-1360
Date:	April 1996
Volume:	107
Number of Pages:	12
Page Range:	pp. 177-188
Publication Status:	Published
Title of Event:	International Symposium on Ionic Polymerization
Location of Event:	ISTANBUL, TURKEY
Date(s) of Event:	SEP 04-08, 1995
URI:	http://wrap.warwick.ac.uk/id/eprint/18785

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