Controlled polymerization of DL-lactide using a Schiff's base al-alkoxide initiator derived from 2-hydroxyacetophenone

Authors
Bhaw-Luximon, A Jhurry, D Spassky, N
Citation
A. Bhaw-luximon et al., Controlled polymerization of DL-lactide using a Schiff's base al-alkoxide initiator derived from 2-hydroxyacetophenone, POLYM BULL, 44(1), 2000, pp. 31-38
Citations number
28
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
POLYMER BULLETIN
ISSN journal
01700839 → ACNP
Volume
44
Issue
1
Year of publication
2000
Pages
31 - 38
Database
ISI
SICI code
0170-0839(200002)44:1<31:CPODUA>2.0.ZU;2-#
Abstract
The kinetics of DL-lactide polymerization was studied in CH2Cl2 at 25 degre es C and in toluene at 70 degrees C with HAPENAlOMe, a new Schiffs base com plex derived from 2-hydroxyacetophenone and ethylenediamine. A higher polym erization rate is observed with this initiator as compared to other previou sly reported Al-alkoxides complexes. The polymerization with HAPENAlOMe is also shown to be a living process in both solvents. Moreover, the polymeriz ation proceeds to quite high conversion without significant occurrence of t ransesterification reactions as confirmed from C-13 NMR and SEC analysis.