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http://dx.doi.org/10.7464/ksct.2011.17.3.244

Synthesis of Low Molecular-weight Poly (Propylene Carbonate)-Poly (Ethylene Glycol) Block Copolymers through $CO_2$/Propylene Oxide Copolymerization  

Lee, Sang-Hwan (Department of Molecular Science and Technology, Ajou University)
Cyriac, Anish (Department of Molecular Science and Technology, Ajou University)
Jeon, Jong-Yeob (Department of Molecular Science and Technology, Ajou University)
Lee, Bun-Yeoul (Department of Molecular Science and Technology, Ajou University)
Publication Information
Clean Technology / v.17, no.3, 2011 , pp. 244-249 More about this Journal
Abstract
We synthesized low molecular-weight polymers bearing hydrophobic and hydrophilic parts in a chain through $CO_2$/propylene oxide copolymerization. When hydrophilic poly (ethylene glycol) bearing -OH group (s) at the end group (s) was added as a chain transfer agent in the $CO_2$/propylene oxide copolymerization catalyzed by a highly active catalyst, block polymers were formed. If poly (ethylene glycol) (PEG) bearing -OH group only at an end was fed, PEG-block-PPC diblock copolymer was obtained. When PEG bearing -OH group at both ends was fed, PPC-block-PEG-block-PPC triblock copolymer was obtained. We confirmed formation of block copolymers by $^1H$-NMR spectroscopy and GPC studies.
Keywords
Carbon dioxide; Propylene oxide; Copolymerization; Poly(propylene carbonate); Poly(ethylene glycol); Block copolymer;
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Times Cited By KSCI : 1  (Citation Analysis)
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