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Enzyme‐catalyzed ring‐opening polymerization of ethylene isopropyl phosphate
Author(s) -
Wen Jie,
Zhuo RenXi
Publication year - 1998
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/(sici)1521-3927(19981201)19:12<641::aid-marc641>3.0.co;2-i
Subject(s) - polymerization , lipase , polymer chemistry , chemistry , isopropyl , ring opening polymerization , chain transfer , phosphoric acid , end group , phosphate , chain growth polymerization , polymer , catalysis , living polymerization , organic chemistry , radical polymerization , enzyme
Enzyme‐catalyzed ring‐opening polymerization of a cyclic phosphate (ethylene isopropyl phosphate) was achieved in bulk by using porcine pancreas lipase (PPL) as a catalyst. It was found that the higher the polymerization temperature and lipase concentration, the faster is the polymerization rate. The yield is not very sensitive to the lipase concentration, while the molecular weight decreases with increasing lipase concentration. From 13 C and 1 H NMR analysis, the polymer has a phosphoric acid group at one end and a hydroxyl group at the other. The 31 P{ 1 H} NMR spectrum indicated that some chain transfer might take place in the polymerization.