A strategy for increasing molecular weight of polyester by lipase-catalyzed polymerization

Authors
Ebata, H Toshima, K Matsumura, S
Citation
H. Ebata et al., A strategy for increasing molecular weight of polyester by lipase-catalyzed polymerization, CHEM LETT, (8), 2001, pp. 798-799
Citations number
10
Categorie Soggetti
Chemistry
Journal title
CHEMISTRY LETTERS
ISSN journal
03667022 → ACNP
Issue
8
Year of publication
2001
Pages
798 - 799
Database
ISI
SICI code
0366-7022(20010805):8<798:ASFIMW>2.0.ZU;2-Z
Abstract
A strategy for increasing the molecular weight of a polyester by lipase-cat alyzed polymerization of a lactone and hydroxy acid was developed using aze otropic dehydration with toluene and a Dearn-Stark trap packed with molecul ar sieves. Thus, polycaprolactone (PCL) and poly(15-hydroxypentadecanoic ac id) having number-average molecular weights of 81000 and 42000, respectivel y, were obtained by a 6-h polymerization at 70 degreesC.