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一个新型的紫外线屏障聚乳酸/聚乙烯糖) 复合生物降解膜增强由子中提取的纤维素

Xiaoyan He^1,2, Lisheng Tang^1,2, Jun Zheng²

¹Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.

|July 29, 2023

概括

子贝纤维素增强的多乳酸/多丁酸 (PLA/PBS) 薄膜. 虽然机械强度下降,但添加纤维素增强了热稳定性和紫外线阻断,显示了可持续材料的潜力.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
生物质利用生物质的利用

背景情况:

聚乳酸/聚丁酸 (PLA/PBS) 是一种具有潜在应用的可生物降解聚合物.
子粉 (CSP) 是一个丰富的,可再生的生物质资源.
为聚合物复合材料开发可持续的增强材料至关重要.

研究的目的:

从CSP中提取纤维素,并将其用作PLA/PBS薄膜中的增强剂.
为了研究提取的纤维素对PLA/PBS薄膜的特性的影响.
评估CSP纤维素作为可持续填充剂的潜力.

主要方法:

从CSP通过脱和化提取纤维素.
用溶剂造PLA/PBS薄膜,其纤维素含量各不相同 (0.3-3重量%).
使用显微镜,热分析 (TGA),X射线衍射 (XRD),机械测试和UV-Vis光谱学进行表征.

主要成果:

提取的纤维素显示直径减少,表面粗,热稳定性改善,结晶度更高 (54.3%).
添加纤维素降低了拉伸强度,并在低度下轻微影响了结晶性.
较高的纤维素含量 (重量3%) 增加了焦炭形成,降低了紫外线透射率 (UVC和UVA区域),同时保持透明度.

结论:

从CSP中提取的纤维素可以作为PLA/PBS薄膜的增强材料.
虽然机械性能受到负面影响,但添加纤维素可以提高热稳定性和UV阻断.
这项研究强调了利用废物生物质开发功能生物复合材料的潜力.

关键词:

紫外线屏障属性紫外线屏障属性可生物降解的薄膜.纤维素纤维素的使用方法子贝提取物子贝提取物

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