聚乙烯糖醇 (PEG) 修饰的木质素/聚乳酸 (PLA) 生物复合物的热和机械性能
Zehui Ju1, Nicolas Brosse2, Sandrine Hoppe3
1College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, PR China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, PR China; Université de Lorraine - INRAE - LERMAB - GP4W, F 54000 Nancy, France.
International journal of biological macromolecules
|February 10, 2024
概括
这项研究开发了高性能聚乳酸 (PLA) 生物复合物,使用聚乙烯糖醇 (PEG) 修饰的. 这种新的方法提高了耐热性和机械性能,提供了工业潜力.
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
- 生物复合材料是一种生物复合材料.
背景情况:
- 聚乳酸 (PLA) 是一种具有越来越多应用的可生物降解聚合物.
- 纸制造的副产品是丰富且可再生的资源.
- 修改红素可以提高其与像PLA这样的聚合物的兼容性.
研究的目的:
- 为了制备和表征聚乳酸 (PLA) 和聚乙烯糖醇 (PEG) 修饰的木质素生物复合物.
- 研究PEG修饰的素含量对PLA复合材料性能的影响.
- 评估这些新型生物复合材料的工业应用潜力.
主要方法:
- 双螺丝挤出用于生物复合材料制备.
- 福里埃变换红外光谱法 (FTIR) 和凝透色谱法 (GPC) 用于结构分析.
- 拉伸测试,微分扫描热度计 (DSC),热重度计分析 (TGA),扫描电子显微镜 (SEM),动态机械分析 (DMA) 和降解分析用于性能评估.
主要成果:
- 添加PEG修饰的质素提高了PLA复合材料的耐热性.
- 含有高达30%的PEG改性红素的PLA复合材料在拉伸强度上没有显著下降.
- 与PLA-L30相比,PLA-PL30的拉伸应力和断裂时的延伸分别增加了26.4%和78.9%.
结论:
- 开发的方法成功地生产了基于素的高性能PLA生物复合材料.
- 素的PEG修饰有效地增强了PLA复合材料的性能.
- 这种方法为在先进材料应用中利用红素提供了一个有前途的途径.
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