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Synthesis and characterization of poly(dimer acid–brassylic acid) copolymer and poly(dimer acid–pentadecandioic acid) copolymer
Author(s) -
Guo Wenxun,
Huang Kaixun
Publication year - 2004
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.20078
Subject(s) - copolymer , chemistry , polymer chemistry , condensation polymer , gel permeation chromatography , differential scanning calorimetry , dimer , hydrolysis , thermogravimetric analysis , fourier transform infrared spectroscopy , nuclear chemistry , organic chemistry , polymer , chemical engineering , physics , engineering , thermodynamics
Poly(dimer acid–brassylic acid) [P(DA–BA)] copolymers and poly(dimer acid–pentadecandioic acid) [P(DA–PA)] copolymers were prepared by melt polycondensation of the corresponding mixed anhydride prepolymers. The copolymers were characterized by Fourier transform infrared (FTIR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), wide angle x‐ray powder‐diffraction, and thermal gravimetric analysis (TGA). In vitro studies show that all the copolymers are degradable in phosphate buffer at 37°C, and leaving an oily dimer acid residue after hydrolysis for the copolymer with high content of dimer acid. The release profiles of hydrophilic model drug, ciprofloxcin hydrochloride, from the copolymers, follow first‐order release kinetics. All the preliminary results suggested that the copolymer might be potentially used as drug delivery devices. © 2004 Wiley Periodicals, Inc. Biopolymers, 2004