材料科学
云母
结晶度
己二酸
纳米复合材料
复合材料
化学工程
极限抗拉强度
蜡
高分子化学
工程类
作者
Yue Wang,Qi Liu,Zhao Zhen,Jia‐Lei Liu,Runmeng Qiao,Wenqing He
摘要
Abstract Poly‐(butylene adipate‐co‐terephthalate) (PBAT) is one of the most popular raw materials for degradable plastic films because of its good biodegradability, ductility, and processability. However, the application of this material is limited by its unsatisfactory water vapor barrier property. This study aims to improve the water vapor barrier and mechanical properties of PBAT films by introducing mica modified by ethylene‐vinyl acetate copolymer waxes (EVA‐mica). The EVA‐mica nanosheets showed a more uniform dispersion in the PBAT films than the mica nanosheets. The PBAT/EVA‐mica films containing 2% EVA‐mica demonstrated outstanding crystallinity, water vapor barrier, and mechanical properties compared with the pure PBAT films. Results showed a 20.23% increase in crystallinity, an 80.09% reduction in water vapor permeability, a 26.82% increase in tensile strength, and a 9.10% increase in tear strength. The enhanced water vapor barrier and mechanical properties of the PBAT/EVA‐mica nanocomposite films are favorable for their future application as biodegradable films.
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