Investigation of surface‐pegylated nanocellulose as reinforcing agent on PBAT biodegradable nanocomposites
Investigation of surface‐pegylated nanocellulose as reinforcing agent on PBAT biodegradable nanocomposites
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DOI：
10.1002/pc.25716
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发表时间：
2020-08
影响因子：
5.2
通讯作者：
A. G. Souza;Giovanni F. de Lima;V. Rangari;D. Rosa
中科院分区：
文献类型：
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作者：
A. G. Souza;Giovanni F. de Lima;V. Rangari;D. Rosa
在目前的工作中，纳米纤维素（NC）已被表面聚乙二醇化，并通过熔融过程进一步用作聚（己二酸-对苯二甲酸丁二醇酯）（PBAT）的增强材料。由于改性 NC 与基体之间良好的相互作用，纳米复合材料显示出显着的刚度增加，尤其是 2% 聚乙二醇化的 NC。聚乙二醇化还改善了填料-PBAT 的粘附力，从而导致更高的热稳定性和低结晶度。拉曼光谱证实了 2% 聚乙二醇化-NC 之间的强相互作用，形态分析证实了填料的粘附力。吸水率表明聚乙二醇化NC吸水率较低，这提高了其适用性，例如作为包装材料。这项独特的研究对于未来设计具有定制特性的聚乙二醇化NC可生物降解纳米复合材料具有重要价值。
In the present work, nanocellulose (NC) has been surface‐pegylated and further employed as reinforcement in poly(butylene adipate‐co‐terephthalate) (PBAT) through the melting process. The nanocomposites showed a significant stiffness increase, especially the 2% pegylated‐NC, due to the good interaction between the modified NC and the matrix. Also the pegylation improved the filler‐PBAT adhesion, which resulted in higher thermal stability and low crystallinity. Raman spectroscopy confirmed the strong interaction between the 2% pegylated‐NC, morphological analysis confirmed the filler adhesion. The water absorption indicated that the pegylated‐NC has a low tendency to absorb water, which improves its applicability, for example, as a packaging material. This unique study is of great value for the future design of pegylated‐NC biodegradable nanocomposites with tailored properties.