In order to exploit the biological functions of materials
a series of new random terpolymers were synthesized by the ring-opening polymerization of
p
-dioxanone
trimethylene carbonate
and L-phenylalanine
N
-carboxyanhydride (L-Phe-NCA) in the presence of stannous octoate. The terpolymers were characterized by
1
H-NMR
13
C-NMR
FTIR
and gel permeation chromatography. The effects of the reactant ratio
catalyst dosage
reaction temperature and time on the copolymerization were investigated
and were found to regulate the composition of the terpolymer. Increases in the reaction temperature
polymerization time
L-Phe-NCA monomer amount
and catalyst content generated a product with a slightly decreased molecular weight. The crystallinity of the terpolymer was investigated by differential scanning calorimetry and polarized optical microscopy. A reasonable mechanism for the polymerization was proposed based on the obtained results.
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Keywords
references
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