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http://dx.doi.org/10.12772/TSE.2012.49.1.001

Effects of Molecular Weight of Poly(ethylene glycol) on the Thermal Properties and the Alkaline Hydrolysis of Copolyesters  

Kim, Young-June (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University)
Jee, Min-Ho (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University)
Lee, Eun-Hee (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University)
Choi, Jin-Uk (KOLON FM Research Center)
Noh, Dong-Hyun (KOLON FM Research Center)
Rho, Hwan-Kwon (KOLON FM Research Center)
Baik, Doo-Hyun (Department of Advanced Organic Materials and Textile System Engineering, Chungnam National University)
Publication Information
Textile Science and Engineering / v.49, no.1, 2012 , pp. 1-8 More about this Journal
Abstract
Copolyesters containing sodium sulfonate group and poly(ethylene glycol) (PEG) were synthesized with various molecular weight of PEG. The selected molecular weights of PEG were 1000, 2000, 4000, 6000, and 16000. The thermal properties and the crystallization behaviors of the copolyesters were investigated by using differential scanning calorimeter (DSC). Alkaline hydrolysis of the copolyesters was studied as a function of the treatment time. The melting temperatures and the heats of fusion of the copolyesters increased with an increase in the PEG molecular weight, while the weight reduction rate of copolyesters in an alkaline solution decreased with an increase in the PEG molecular weight. At the same PEG content in copolyesters, hard segment length increases with the PEG molecular weight, which was thought to be the most important factor that determines the thermal properties and the alkaline hydrolysis behavior.
Keywords
copolyesters; molecular weight of PEG; hard segment length; thermal properties; hydrolysis in alkaline solution;
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Times Cited By KSCI : 1  (Citation Analysis)
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