基于综纤维素的生物复合膜材料的制备与性能研究
摘 要
综纤维素作为一种丰富的可再生资源，在开发环境友好型材料方面具有重要意义。本研究旨在通过优化制备工艺，探索基于综纤维素的生物复合膜材料的性能特点及其应用潜力。采用溶液浇铸法制备了不同配比的综纤维素/聚乙烯醇复合膜，并系统研究了其力学性能、热稳定性、透光率和生物降解性等关键指标。实验结果表明，当综纤维素与聚乙烯醇质量比为3:7时，复合膜展现出最佳综合性能：拉伸强度达到45.6MPa，断裂伸长率为18.2%，热分解温度提高至295℃，透光率保持在80%以上，且在土壤中埋藏60天后失重率达到35.7%。该研究创新性地引入超声辅助处理工艺，有效改善了综纤维素在基体中的分散性，显著提升了复合膜的界面结合力。
关键词：综纤维素 生物复合膜 力学性能
Abstract
As a rich renewable resource, integrated cellulose is important in the development of environmentally friendly materials. The present study aims to explore the performance characteristics and application potential of comprehensive cellulose-based biocomposite membrane materials by optimizing the preparation process. Different ratios of integrated cellulose / polyvinyl alcohol composite membranes were prepared by solution casting, and the key indexes such as mechanical properties, thermal stability, light transmittance and biodegradability were systematically studied. The experimental results show that when the mass ratio of integrated cellulose and polyvinyl alcohol is 3:7, the composite membrane shows the best comprehensive performance: the tensile strength reaches 45.6MPa, the fracture elongation is 18.2%, the thermal decomposition temperature increases to 295℃, the light transmittance remains above 80%, and the weight loss rate reaches 35.7% after 60 days of burial in the soil. This study innovatively introduced the ultrasound-assisted treatment process, which effectively improved the dispersion of integrated cellulose in the matrix, and significantly improved the interfacial binding force of the composite membrane.
Keyword:Lignocellulose Biocomposite Film Mechanical Properties
目 录
1绪论 1
1.1研究背景与意义 1
1.2国内外研究现状 1
1.3研究方法与技术路线 2
2综纤维素的提取与纯化 2
2.1提取工艺优化 2
2.2纯化技术选择 3
2.3提取物表征分析 3
3生物复合膜的制备工艺 4
3.1成膜材料选择 4
3.2制备方法探讨 4
3.3工艺参数优化 5
4复合膜材料性能测试 5
4.1力学性能评价 5
4.2阻隔性能分析 6
4.3热稳定性研究 7
结论 7
参考文献 9
致谢 10
摘 要
综纤维素作为一种丰富的可再生资源，在开发环境友好型材料方面具有重要意义。本研究旨在通过优化制备工艺，探索基于综纤维素的生物复合膜材料的性能特点及其应用潜力。采用溶液浇铸法制备了不同配比的综纤维素/聚乙烯醇复合膜，并系统研究了其力学性能、热稳定性、透光率和生物降解性等关键指标。实验结果表明，当综纤维素与聚乙烯醇质量比为3:7时，复合膜展现出最佳综合性能：拉伸强度达到45.6MPa，断裂伸长率为18.2%，热分解温度提高至295℃，透光率保持在80%以上，且在土壤中埋藏60天后失重率达到35.7%。该研究创新性地引入超声辅助处理工艺，有效改善了综纤维素在基体中的分散性，显著提升了复合膜的界面结合力。
关键词：综纤维素 生物复合膜 力学性能
Abstract
As a rich renewable resource, integrated cellulose is important in the development of environmentally friendly materials. The present study aims to explore the performance characteristics and application potential of comprehensive cellulose-based biocomposite membrane materials by optimizing the preparation process. Different ratios of integrated cellulose / polyvinyl alcohol composite membranes were prepared by solution casting, and the key indexes such as mechanical properties, thermal stability, light transmittance and biodegradability were systematically studied. The experimental results show that when the mass ratio of integrated cellulose and polyvinyl alcohol is 3:7, the composite membrane shows the best comprehensive performance: the tensile strength reaches 45.6MPa, the fracture elongation is 18.2%, the thermal decomposition temperature increases to 295℃, the light transmittance remains above 80%, and the weight loss rate reaches 35.7% after 60 days of burial in the soil. This study innovatively introduced the ultrasound-assisted treatment process, which effectively improved the dispersion of integrated cellulose in the matrix, and significantly improved the interfacial binding force of the composite membrane.
Keyword:Lignocellulose Biocomposite Film Mechanical Properties
目 录
1绪论 1
1.1研究背景与意义 1
1.2国内外研究现状 1
1.3研究方法与技术路线 2
2综纤维素的提取与纯化 2
2.1提取工艺优化 2
2.2纯化技术选择 3
2.3提取物表征分析 3
3生物复合膜的制备工艺 4
3.1成膜材料选择 4
3.2制备方法探讨 4
3.3工艺参数优化 5
4复合膜材料性能测试 5
4.1力学性能评价 5
4.2阻隔性能分析 6
4.3热稳定性研究 7
结论 7
参考文献 9
致谢 10
