With the rapid exhaustion of fossil resources, and environmental pollution relative to the use of fossil-based products, developing eco-friendly products using biomass and/or biodegradable resources is becoming increasingly conspicuous. In this study, ecofriendly and biodegradable composite membranes containing varying MC/PLA (methylcellulose/polylactic acid) mass ratios were prepared. The properties and structures of the MC/PLA membranes were studied by mechanical testing, ¹³C NMR techniques, X-ray diffraction (XRD), thermogravimetric analysis (TGA), and hot compression. The MC/PLA membranes displayed markedly improved tensile strength and elongation at the MC/PLA mass ratio range of 99:1 to 9:1. The tensile strength and elongation of the MC/PLA (97:3) membrane was found to be the optimum, at 30% and 35% higher than the neat MC, respectively. It was also found that hot compression could improve the tensile strength and elongation of the membranes. At the same time, the membranes showed enough good thermal stability. In addition, the effect of MC/PLA mass ratio on morphologies of the membranes were studied by microscopy technique.

中文翻译：

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方便地制备具有改进性能的甲基纤维素/ PLA膜

随着化石资源的快速枯竭以及相对于使用化石基产品的环境污染，使用生物质和/或可生物降解资源开发环保产品变得越来越引人注目。在本研究中，制备了含有不同质量比的MC / PLA（甲基纤维素/聚乳酸）的环保且可生物降解的复合膜。通过机械测试研究了MC / PLA膜的特性和结构，¹³C NMR技术，X射线衍射（XRD），热重分析（TGA）和热压缩。MC / PLA膜在MC / PLA质量比为99：1到9：1时显示出显着提高的拉伸强度和伸长率。发现MC / PLA（97：3）膜的拉伸强度和伸长率是最佳的，分别比纯MC高30％和35％。还发现热压缩可以改善膜的拉伸强度和伸长率。同时，膜表现出足够好的热稳定性。另外，通过显微镜技术研究了MC / PLA质量比对膜形态的影响。