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Zhengqiu Li,Lin Ye,Xiaowen Zhao,Phil Coates,Fin Caton-Rose,Michael Martyn 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.52 No.-
Highly oriented long-chain-branched poly(lactic acid) (LCB-PLA)film was fabricated through biaxial hotstretching in solid state. Compared with neat PLA, more homogeneousfilm with higher draw ratio can beobtained for LCB-PLA. With increasing draw ratio, the long period, lamellae thickness and grain size ofLCB-PLA decreased, while the crystallinity increased. For LCB-PLA with draw ratio of 6*6, the tensilestrength and elongation at break can reach up to 208 6 MPa and 85% respectively. After drawing, theincreasing content ofCH3 and C¼O group on the surface of LCB-PLAfilm was beneficial for celladhesion and growth on it.