Premium
Ring‐opening polymerization of glycidylic compounds: influence of the glycidylic oxygen in the coordinative mechanism
Author(s) -
Ronda Joan Carles,
Serra Angels,
Cádiz Virginia
Publication year - 1999
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19990101)200:1<221::aid-macp221>3.0.co;2-3
Subject(s) - polymerization , catalysis , chemistry , monomer , polymer chemistry , polymer , lewis acids and bases , oxygen , aluminium , oxygen atom , ring opening polymerization , organic chemistry , molecule
A series of oxiranic monomers was synthesized and polymerized by four of the most common aluminium‐based coordinative initiators: (C 2 H 5 ) 3 Al/H 2 O (mole ratio 1 : 0.6) named Vandenberg catalyst, (C 2 H 5 ) 3 Al/CH 3 COCH 2 COCH 3 /H 2 O (mole ratio 1 : 1 : 0.5) named Vandenberg chelate catalyst, (i‐PrO) 2 Al—O—Zn—O—Al(i‐PrO) 2 named Teyssié catalyst and (i‐PrO) 3 Al/ZnCl 2 (mole ratio 1 : 0.5) named Price catalyst. They all have a different Lewis acid character. The influence of a second oxygen (glycidylic or not) on the characteristics of the polymers and conversions was studied and rationalized on the basis of a coordinative mechanism. The differences in the polymerization rate and regioregularity of the polymers obtained are related to the electronic and coordination effects of the neighbouring oxirane substituents. The new polymers were also thermally characterized.