Stereocomplex formation in enantiomeric diblock and triblock copolymers ofpoly(epsilon-caprolactone) and polylactide

Citation
S. Pensec et al., Stereocomplex formation in enantiomeric diblock and triblock copolymers ofpoly(epsilon-caprolactone) and polylactide, POLYM BULL, 45(4-5), 2000, pp. 373-380
Citations number
28
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
POLYMER BULLETIN
ISSN journal
01700839 → ACNP
Volume
45
Issue
4-5
Year of publication
2000
Pages
373 - 380
Database
ISI
SICI code
0170-0839(200012)45:4-5<373:SFIEDA>2.0.ZU;2-G
Abstract
Enantiomeric diblock and triblock copolymers from caprolactone and lactide with various compositions were synthesized using alcohol/tin octoate as ini tiator system. Stereocomplexes were formed between pairs of enantiomeric block copolymers and their thermal properties examined. The melting temperatures of the crys talline PCL and PLA phases are depending on the composition of block copoly mers. A raise of approximately 55 degreesC of the temperature of PLA phase is observed in the blends as a consequence of stereocomplex formation as we ll in diblock as in triblock copolymers.