Premium
Synthesis of functional polycarbonates by lipase‐catalyzed ring‐opening polymerization
Author(s) -
Feng Jun,
Zhuo Renxi,
He Feng,
Wang Xuli
Publication year - 2003
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200390128
Subject(s) - polymerization , lipase , candida rugosa , ring opening polymerization , polymer chemistry , molar mass distribution , polycarbonate , catalysis , chemistry , yield (engineering) , candida antarctica , organic chemistry , polymer , materials science , enzyme , metallurgy
Poly(5‐benzyloxy‐trimethylene carbonate) (PBTMC), a new functional polycarbonate was synthesized by enzymatic ring‐opening polymerization in bulk at 150°C using Porcine pancreas lipase (PPL) or Candida rugosa lipase (CL) as catalyst. Influences of different polymerization conditions such as the source of enzyme, enzyme concentration and polymerization time on the molecular weight and yield were studied. The results showed that PPL exhibited higher activity than CL. Both higher molecular weight( Mn , 18953) and yield(98%) could be obtained by the use of PPL as catalyst. 1 H NMR spectrum showed no decarboxylation occurrence during the ring‐opening polymerization.