Synthesis of Low Molecular-weight Poly (Propylene Carbonate)-Poly (Ethylene Glycol) Block Copolymers through CO2/Propylene Oxide Copolymerization 


Vol. 17,  No. 3, pp. 244-249, Sep.  2011


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  Abstract

We synthesized low molecular-weight polymers bearing hydrophobic and hydrophilic parts in a chain through CO2/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 CO2/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.

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  Cite this article

[IEEE Style]

L. SH, C. A, J. JY, L. BY, "Synthesis of Low Molecular-weight Poly (Propylene Carbonate)-Poly (Ethylene Glycol) Block Copolymers through CO2/Propylene Oxide Copolymerization," Clean Technology, vol. 17, no. 3, pp. 244-249, 2011. DOI: .

[ACM Style]

Lee SH, Cyriac A, Jeon JY, and Lee BY. 2011. Synthesis of Low Molecular-weight Poly (Propylene Carbonate)-Poly (Ethylene Glycol) Block Copolymers through CO2/Propylene Oxide Copolymerization. Clean Technology, 17, 3, (2011), 244-249. DOI: .

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pISSN : 1598 - 9712
eISSN : 2288 - 0690

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