Effects of blending poly(D,L-lactide) with poly(ethylene glycol) on the higher-oder crystalline structures of poly(ethylene glycol) as revealed by small-angle X-ray scattering
作者： N D Tien , T P Hoa , G Kimura , Y Yamashiro , H Fujiwara
DOI: 10.1088/1742-6596/272/1/012007
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摘要: Effects of blending poly(lactic acid) (PLA) with poly(ethylene glycol) (PEG) on higher-order crystalline structures PEG were examined using small-angle X-ray scattering (SAXS). For this purpose, the fact that two polymers are both makes situtation much complicated. To simplify, non-crystalline PLA is suitable. Thus, we used poly(D,L-lactic (DLPLA), which random copolymer comprising D- and L-lactic acid moieties. Multiple peaks arising from regular lamellar structure observed for homopolymer blends. Surprisingly, more blend DLPLA/PEG at composition 20/80 wt.% than homopolymer. Also sample as well a homopolymer, very peculiar SAXS profiles just 1°C below Tm PEG. This found to be particle plate-like objects, has never been reported polymer blends or polymers. Futhermore, it was there strong hysteresis formation.
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