基于热塑性聚乙烯醇/乳酸的原位纳米纤维增强生物可降解复合材料

Q3 Engineering

International Journal of Nanomanufacturing Pub Date : 2018-07-27 DOI:10.1504/IJNM.2018.10014653

Zheng Guo, Yuerong Ba, Dong Liu, Wei-Ying Pan

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引用次数: 0

摘要

采用简单的挤出拉伸工艺，成功制备了以热塑性聚乙烯醇（TPVA）为基体、聚乳酸（PLA）为分散原纤维的原位纳米纤维增强共混物。通过傅立叶变换红外光谱、热重分析、扫描电子显微镜和拉伸试验对熔融处理的TPVA/PLA复合材料的微观结构和力学性能进行了表征。结果表明，TPVA和PLA之间存在氢键，增强了PLA的分散性以及与TPVA基体的界面粘附性。PLA含量在10-30wt.%之间变化，得到具有78~150nm原纤维的增强的TPVA基质。与TPVA相比，TPVA/PLA复合材料在力学性能和热稳定性方面有显著提高。

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In situ nanofibrillar reinforced biodegradable composites based on thermoplastic poly (vinyl alcohol)/poly (lactic acid)

In situ nanofibrillar reinforced blends with thermoplastic poly (vinyl alcohol) (TPVA) as matrix and poly (lactic acid) (PLA) as dispersed fibrils were successfully prepared by a simple extrusion-stretching process. The microstructure and mechanical properties of the melt-processed TPVA/PLA composites were characterised by Fourier transform infrared spectra, thermal gravimetric analysis, scanning electron microscopy and tensile tests. The results indicated that there are hydrogen bonding between TPVA and PLA which enhance PLA dispersion as well as the interfacial adhesion with TPVA matrix. PLA content was varied from 10 to 30 wt. % resulting in reinforced TPVA matrices with fibrils of 78~150 nm. Compared with TPVA, TPVA/PLA composites exhibit remarkable improvement in mechanical properties and thermal stability.

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来源期刊

International Journal of Nanomanufacturing Engineering-Industrial and Manufacturing Engineering

CiteScore

0.60

自引率

0.00%

发文量