Synthesis and degradation behavior of poly(propylene carbonate) derived from carbon dioxide and propylene oxide

High molecular weight and regular molecular structure poly(propylene carbonate) (PPC) was successfully synthesized from carbon dioxide and propylene oxide. The PPC copolymer structure was an exact alternating copolymer as evidenced by the 13C-NMR technique. Degradative behavior of the PPC was conducted by soil burial and buffer solution immersion (pH = 6) tests, respectively. The results showed that the weight loss of soil buried in PPC films increased more slowly than that immersed in the buffer solution after 6-month exposure. However, the weight loss of sample immersed in the buffer solution increased rapidly during the first 2 months and reached a value of 4.59%. Water sorption measurement also revealed that the PPC membranes immersed in buffer solution were more hydrophilic than those in soil burial tests. The degradation mechanism of PPC membranes was correlated with the sample morphologies, FTIR, and 1H-NMR spectra. The SEM morphologies were consistent with the weight loss and water sorption measurements. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 1840–1846, 2004

[1]  S. Tjong,et al.  Catalytic synthesis and characterization of an alternating copolymer from carbon dioxide and propylene oxide using zinc pimelate , 2003 .

[2]  Q. Zhu,et al.  Effects of the structure and morphology of zinc glutarate on the fixation of carbon dioxide into polymer , 2002 .

[3]  S. Tjong,et al.  Thermally stable and high molecular weight poly(propylene carbonate)s from carbon dioxide and propylene oxide , 2002 .

[4]  S. Tjong,et al.  Synthesis and characterization of alternating copolymer from carbon dioxide and propylene oxide , 2002 .

[5]  T. Shin,et al.  A new copolymerization process leading to poly(propylene carbonate) with a highly enhanced yield from carbon dioxide and propylene oxide , 1999 .

[6]  Y. Yoshida,et al.  Enzyme-catalyzed degradation of aliphatic polycarbonates prepared from epoxides and carbon dioxide , 1999 .

[7]  Y. Doi,et al.  Miscibility, Thermal Properties, and Enzymatic Degradability of Binary Blends of Poly[(R)-3-hydroxybutyric acid] with Poly(ε-caprolactone-co-lactide) , 1996 .

[8]  M. Koenig,et al.  Biodegradable blends and composites of polycaprolactone and starch derivatives , 1995 .

[9]  Edwin L. Thomas,et al.  Rheological properties of thermoplastic starch and starch/poly(ethylene-co-vinyl alcohol) blends☆ , 1995 .

[10]  A. Albertsson,et al.  Degradation product pattern and morphology changes as means to differentiate abiotically and biotically aged degradable polyethylene , 1995 .

[11]  Qiu Bo,et al.  Polycaprolactone–poly(ethylene glycol) block copolymer, I: synthesis and degradability in vitro , 1993 .

[12]  T. Satoh,et al.  Modulation of oxygen-carrying capacity of artificial red cells , 1993 .

[13]  M. Nakano,et al.  Examination of biodegradability of poly(ethylene carbonate) and poly(propylene carbonate) in the peritoneal cavity in rats. , 1983, Chemical & pharmaceutical bulletin.

[14]  Y. Yoshida,et al.  Functional polycarbonate by copolymerization of carbon dioxide and epoxide: Synthesis and hydrolysis , 1982 .

[15]  S. Shinkai.  Coenzyme catalyses in micelles, polymers and host molecules , 1982 .

[16]  K. Soga,et al.  Alternating Copolymerization of CO2 and Propylene Oxide with the Catalysts Prepared from Zn(OH)2 and Various Dicarboxylic Acids , 1981 .

[17]  Ferdinand Rodriguez,et al.  Microbial degradation of polyesters: Polycaprolactone degraded by P. pullulans† , 1974 .

[18]  T. Tsuruta,et al.  Copolymerization of carbon dioxide and epoxide by the dialkylzinc–carboxylic acid system , 1973 .