改善了日棕微纤维增强PCL生物复合材料的机械和热性能,用于刚性包装
Sakib Hossain Khan1, Hom N Dhakal1, Abu Saifullah1
1Portsmouth Centre for Advanced Materials and Manufacturing (PCAMM), School of Electrical and Mechanical Engineering, University of Portsmouth, Portsmouth PO1 3DJ, UK.
Molecules (Basel, Switzerland)
|February 26, 2025
概括
枣树微纤维 (DPMF) 有效地增强聚烯酸 (PCL) 生物复合材料,增强拉伸强度和刚性. 性处理进一步提高排水性和热性质,以实现可持续的包装.
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
- 可持续材料 可持续材料
背景情况:
- 像枣树纤维这样的农业残留物为生物复合材料提供了可持续的增强潜力.
- 聚烯酸乙烯 (PCL) 是一种可生物降解的聚,具有各种应用潜力.
- 提高生物复合材料的性能需要有效的纤维矩阵界面粘附和表面修饰.
研究的目的:
- 为了研究将枣树微纤维 (DPMF) 纳入聚烯酸 (PCL) 矩阵,以创建可持续的生物复合材料.
- 评估氧化 (NaOH) 处理对DPMF的影响及其对生物复合材料性能的影响.
- 评估DPMF增强的PCL生物复合材料在刚性包装应用中的潜力.
主要方法:
- 使用压缩成型和干燥混合,制造具有不同DPMF含量 (0-10重量%) 的PCL生物复合材料.
- 使用氧化 (NaOH) 处理对DPMF表面进行修改.
- 纤维和生物复合材料的表征使用福里埃变换红外光谱 (FTIR),X射线衍射 (XRD),热重力测量分析 (TGA),粒子大小分析,拉力测试和动态机械分析 (DMA).
主要成果:
- 对DPMF的性处理增加了表面粗度,去除了杂质,并改善了纤维结晶性.
- 与纯PCL相比,含有5%重量DPMF的生物复合材料的抗拉强度增加了20%,Young's Modulus增加了164%.
- 矩阵结晶度从39% (纯PCL) 增加到43% (5重量%的DPMF).
- 经过处理的生物复合材料显示出增强的反水性和热稳定性.
- 动态机械分析 (DMA) 显示,与未经处理的相比,处理的复合材料在35°C的储存模量增加了22%.
结论:
- 枣树微纤维 (DPMF) 是一个可行的,环保的强化聚烯酸 (PCL) 生物复合材料.
- 处理显著提高了DPMF增强PCL的界面粘附和热力学性能.
- 这些可持续的生物复合材料显示出对刚性包装应用的希望,为化石材料提供了替代品.
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