Melt-processed poly (vinyl alcohol)/corn starch/nanocellulose composites with improved mechanical properties

文献类型： 外文期刊

第一作者： Zhou, Peng

作者： Zhou, Peng;Tian, Yongqiang;Zhou, Peng;Tian, Yongqiang;Sun, Xunwen;Zhang, Xinxing;Luo, Yongyue;Lv, Zhen

作者机构：

关键词： Poly (vinyl alcohol); Nanocomposites; Melt-processing

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：6.953； 五年影响因子：6.737 ）

ISSN： 0141-8130

年卷期： 2021 年 183 卷

页码：

收录情况： SCI

摘要： Corn starch (CS) and cellulose nanofibrils (CNFs) were incorporated into biodegradable poly (vinyl alcohol) (PVA) to prepare mechanically robust and sustainable composites through melt-processing. Based on the regulation and control of hydrogen bonding network, CS and CNFs can extend the processing window and improve the thermoplasticity of PVA composites. Fourier transform infrared spectroscopy and Raman spectra analysis indicate that the intra- and inter-molecular hydrogen bonds of PVA are broken, accompanied by the formation of new hydrogen bonds among PVA, CS and CNFs during the melt-processing treatment. Thermal analysis shows that the processing window of PVA composite is significantly broadened to 131.46 degrees C. The tensile strength, modulus and elongation at break of the composites reach to 28.19 MPa, 1572.54 MPa and 10.72% by the incorporation of 10 wt% CS and 10 wt% CNFs. This strategy is not only expected to provide a direction for preparing complex three-dimensional products of PVA by melt-processing, but also provide a method to enhance the mechanical properties of other biodegradable plastics.

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