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- Title
Fabrication of PLLA with High Ductility and Transparence by Blending with Tiny Amount of PVDF and Compatibilizers.
- Authors
Zhang, Yan; Li, Fei; Yu, Qunli; Ni, Chunjun; Gu, Xiaoying; Li, Yongjin; You, Jichun
- Abstract
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.
- Subjects
DUCTILITY; COMPATIBILIZERS; METHYL methacrylate; MOLECULAR weights; CARBOXYL group; ENERGY dissipation; POLYVINYLIDENE fluoride
- Publication
Macromolecular Materials & Engineering, 2019, Vol 304, Issue 11, pN.PAG
- ISSN
1438-7492
- Publication type
Article
- DOI
10.1002/mame.201900316