Effects of compatibility of poly(l-lactic-acid) and thermoplastic polyurethane on mechanical property of blend fiber: EFFECTS OF COMPATIBILITY OF POLY AND THERMOPLASTIC POLYURETHANE

作者: Dan-Ying Zuo , Lei Zhang , Chang-Hai Yi , Han-Tao Zuo

DOI: 10.1002/PAT.3382

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摘要: Blending poly(l-lactic-acid) (PLLA) and thermoplastic polyurethane (TPU) has been performed in an effort to toughen PLLA without compromising its biodegradability biocompatibility. The mixing enthalpy calculation of TPU predicted that the blend was a thermodynamic miscible system. viscoelastic properties phase morphologies PLLA/TPU blends were investigated further by dynamic mechanical analysis scanning electron microscopy. It found partially showed Tg shifted toward with content increasing. Scanning microscopy photos changed from sea island structure bicontinuous as increment content, which suggested miscibility enhanced when increased. fibers fabricated. With increasing 0 wt% 30 wt%, tensile strength initial modulus decreased first then increased, while elongation at break fracture work gradually change indicated toughening effects on fibers, also formation influenced rheological behavior other than compatibility. Copyright © 2014 John Wiley & Sons, Ltd.

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