Poly(L‐lactic acid) (PLLA) with high ductility and transparence is fabricated by a blending tiny amount of polyvinylidene fluoride (PVDF) and reactive comb compatibilizers (RCC). Upon blending, the reaction between terminal carboxyl groups in PLLA and expoxy groups in RCC produces graft copolymer (PLLA‐g‐poly(methyl methacrylate) (PMMA)), which locates at the PVDF/PLLA interface due to the balanced stress on two sides. On the one hand, the PVDF domain size decreases remarkably with the help of compatibilization, accounting for the excellent transparence. On the other hand, the interface is enhanced significantly, resulting in an activated PLLA layer surrounding PVDF domains. The thickness exhibits higher magnitude because of the high molecular weight of grafted PLLA (relative to premade compatibilizers). During uniaxial tension, the activated PLLA layers (in addition to PVDF) can cause effective energy absorption and dissipation in the case of percolation of them, which is the reason for the better ductility. These results provide an efficient strategy to improve the ductility and transparence simultaneously.

中文翻译：

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通过掺入少量的PVDF和增容剂来制备具有高延展性和透明度的PLLA

通过混合少量的聚偏二氟乙烯（PVDF）和反应性梳状增容剂（RCC）来制造具有高延展性和透明性的聚（L-乳酸）（PLLA）。混合后，PLLA中的末端羧基与RCC中的环氧基之间的反应产生接枝共聚物（PLLA-g-聚（甲基丙烯酸甲酯）（PMMA）），由于两侧的应力平衡，该接枝共聚物位于PVDF / PLLA界面。一方面，在相容性的帮助下，PVDF结构域的尺寸显着减小，这说明了出色的透明度。另一方面，界面得到了显着增强，从而在PVDF域周围形成了激活的PLLA层。由于接枝的PLLA的高分子量（相对于预制的增容剂），该厚度表现出更高的幅度。单轴拉伸时 活化的PLLA层（除PVDF外）在渗滤的情况下会引起有效的能量吸收和耗散，这是具有更好延展性的原因。这些结果提供了同时改善延展性和透明性的有效策略。