Poly(propylene carbonate) (PPC) is an aliphatic polycarbonate synthesized from carbon dioxide and propylene oxide. Poly(3‐hydroxybutyrate) (PHB) is a type of thermoplastic polyester produced by biological fermentation. The blending of PHB with PPC can effectively enhance the mechanical properties and barrier properties of PPC. Bionanocomposites of PPC/PHB enhanced by cellulose nanocrystal (CNC) are prepared via a two‐step process using polyethylene glycol as a carrier. Results show that the oxygen barrier properties of the composites increased with the increase of the CNC content. When the CNC content is 1 wt%, the oxygen barrier performance increases nearly 18 times. The assumed model can predict the barrier performance of composites with the combined influence of morphology and CNC distribution. This will make PPC/PHB/CNC nanocomposites a very promising degradable material for food packaging application.

中文翻译：

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纤维素纳米晶体增强的聚碳酸亚丙酯/聚3-羟基丁酸酯基仿生纳米复合材料，有可能作为包装材料

聚碳酸亚丙酯（PPC）是由二氧化碳和环氧丙烷合成的脂肪族聚碳酸酯。聚（3-羟基丁酸酯）（PHB）是一种通过生物发酵生产的热塑性聚酯。PHB与PPC的共混可有效增强PPC的机械性能和阻隔性能。纤维素纳米晶体（CNC）增强了PPC / PHB的Bionanocomposites，使用聚乙二醇作为载体，通过两步过程制备。结果表明，随着CNC含量的增加，复合材料的阻氧性能增加。当CNC含量为1 wt％时，阻氧性能提高了近18倍。假设的模型可以通过形态学和CNC分布的综合影响来预测复合材料的阻隔性能。