自然共生型高分子と汎用高分子ブレンドの動的不均一性に関する誘電的研究 : ポリ乳酸/ポリエーテル系

概要

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Dielectric measurements were carried out on two polymer blends consisting of an eco-friendly polymer poly(lactic acid) (PLA) and polyethers: One was PLA/poly(ethylene grycol) (PEG) with molecular weight M of 300 and the other was PLA/poly(propylene glycol) (PPG) with M=1000. The DSC thermograms indicated that PLA/PEG and PLA/PPG were miscible in the range of PLA content above 60 and 75 %, respectively. Corresponding to the thermal data, PLA/PEG and PLA/PPG blends exhibited single dielectric loss peak in the miscible range. The loss curves were much broader than those of the components due to concentration fluctuation. The amplitude of concentration fluctuation was assessed from the temperature dependence of the half width of the dielectric loss curves by assuming the Gaussian distribution of local concentration.
一般社団法人　日本レオロジー学会の論文
2004-09-15