Enzymatic synthesis and chemical recycling of poly(carbonate-urethane).
Novel enzymatically recyclable poly(carbonate-urethane) consisting of a diurethane moiety as a hard segment and a carbonate linkage as an enzymatically cleavable unit was prepared by the polycondensation of biodegradable diurethanediol and diethyl carbonate using lipase. The produced poly(carbonate-urethane) was readily transformed by lipase into the corresponding cyclic oligomers which were more easily repolymerized by lipase to produce a higher molecular weight poly(carbonate-urethane) than that of the parent poly(carbonate-urethane).
Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
Yasuyuki
Y
Soeda
Kazunobu
K
Toshima
Shuichi
S
Matsumura
D001673:Biodegradation, Environmental; D002175:Candida / Q000737:chemistry / Q000201:enzymology; D004047:Diethyl Pyrocarbonate / Q000031:analogs & derivatives* / Q000737:chemistry; D008049:Lipase / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D008970:Molecular Weight; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D011140:Polyurethanes / Q000138:chemical synthesis* / Q000737:chemistry; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D013696:Temperature; D013997:Time Factors
D011108:Polymers; D011140:Polyurethanes; C110029:poly(carbonate urea) urethane; C017858:ethyl carbonate; D008049:Lipase; D004047:Diethyl Pyrocarbonate