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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/12362

Title: Crystallization Behavior and Dynamic Mechanical Properties of Poly(L-Lactic Acid) with Poly(Ethylene Glycol) Terminated by Benzoate
Authors: Huang, Tong
Miura, Motohiro
Nobukawa, Shogo
Yamaguchi, Masayuki
Keywords: Poly(lactic acid)
Plasticization
Crystallization
Hydrolysis degradation
Issue Date: 2014-01-28
Publisher: Springer
Magazine name: Journal of Polymers and the Environment
Volume: 22
Number: 2
Start page: 183
End page: 189
DOI: 10.1007/s10924-014-0638-y
Abstract: Effect of the addition of poly(ethylene glycol) terminated by benzoate (PEG-BA) on the crystallization behavior and dynamic mechanical properties of poly(L-lactic acid) PLLA is studied as compared with poly(ethylene glycol) (PEG-OH). It is found that PEG-BA shows good plasticizing effect and the Flory-Huggins interaction parameter with PLLA is negative. Because PEG-OH having the same degree of polymerization is immiscible with PLLA, the end group in PEG-BA, i.e., benzoate, plays an important role in the miscibility. Furthermore, PEG-BA does not induce the PLLA degradation at melt-processing, whereas PEG-OH leads to the hydrolysis degradation. Finally, the addition of PEG-BA pronounces the crystallization rate of PLLA at low crystallization temperatures and thus enhances the degree of crystallinity. Consequently, the temperature dependence of dynamic mechanical properties are similar to those of isotactic polypropylene.
Rights: This is the author-created version of Springer, Tong Huang, Motohiro Miura, Shogo Nobukawa, Masayuki Yamaguchi, Journal of Polymers and the Environment, 22(2), 2014, 183-189. The original publication is available at www.springerlink.com, http://dx.doi.org/10.1007/s10924-014-0638-y
URI: http://hdl.handle.net/10119/12362
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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