Biodegradable regenerated cellulose-dispersed composites with improved properties via a pickering emulsion process
Biodegradable regenerated cellulose-dispersed composites with improved properties via a pickering emulsion process
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通过皮克林乳液工艺改进性能的可生物降解再生纤维素分散复合材料
DOI：
10.1016/j.carbpol.2017.09.065
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发表时间：
2017
影响因子：
11.2
通讯作者：
Xiaofeng Sui
中科院分区：
文献类型：
--
作者：
Yunchong Zhang;Yang Jiang;Lei Han;Bijia Wang;Hong Xu;Yi Zhong;Linping Zhang;Zhiping Mao;Xiaofeng Sui
用纳米纤维素增强可生物降解的聚合物是有吸引力的，但其有效性通常受到不均匀分散的影响。本研究开发了一种利用再生纤维素（RC）制备增强生物降解复合材料的通用方法。采用RC稳定PLA/二氯甲烷的水包油型Pickering乳液，制备了分散均匀的RC/PLA复合材料。与原生PLA相比，所得到的RC/PLA复合材料显示出高达34%的增强的结晶和拉伸强度，而在可见光范围内的透射率保持在70%以上。Pickering乳液复合工艺简单、环境友好、成本低廉，可用于制备其他RC增强生物降解复合材料。
Reinforcement of biodegradable polymers with nanocellulose is attractive yet the effectiveness is often compromised by uneven dispersion. In this work, a general method of preparing reinforced biodegradable composites using regenerated cellulose (RC) was developed. From an oil-in-water Pickering emulsion of PLA/methylene chloride stabilized with RC, uniformly dispersed RC/PLA composites was obtained. The resulting RC/PLA composites showed enhanced crystallization and tensile strength of up to 34% compared with the native PLA, while the transmittance in the visible range remained above 70%. The Pickering emulsion-based composition procedure is simple, environment friendly and cost effectively, which could be applied to preparation of other RC-reinforced biodegradable composites.