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红素与尿结合的功能化及其对PLA复合材料的强化作用

Preeti Beniwal¹, Amrit Pal Toor²

¹Dr SSB University Institute of Chemical Engineering and Technology, Panjab University, India.

International journal of biological macromolecules

|December 30, 2023

概括

改性素增强了聚乳酸 (PLA) 复合材料,显著改善了拉伸强度和破裂时延长等机械性能. 这种素交叉连接为先进的复合材料提供了一个有前途的途径.

科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学
生物复合材料是一种生物复合材料.

背景情况:

素是一种天然聚合物,在高性能材料中丰富,但未得到充分利用.
改善生物塑料的机械性能,如聚乳酸 (PLA),对于可持续的应用至关重要.
素的化学修饰可以提高其在聚合物矩阵中的兼容性和性能.

研究的目的:

通过与六甲二酸盐 (HDI) 的交叉连接来使素功能化.
为了研究修改后的红素对聚乳酸 (PLA) 复合材料的特性的影响.
为了提高基于PLA的材料的机械强度和热稳定性.

主要方法:

在二甲基硫氧化物中与六甲基二酸 (HDI) 进行素的异质交联.
使用FTIR,XPS和FESEM进行修饰性木质素的表征.
将改性素纳入PLA矩阵并评估复合材料的性能 (热,机械,水相互作用,结晶性).

主要成果:

成功合成并确认了HDI修饰的红素.
在PLA复合材料的显著改进:拉伸强度增加了高达231%,在断裂时延长了高达53%.
在PLA复合材料中观察到增强的热稳定性,增加的结晶性和改变的水相互作用特性.

结论:

与HDI交叉连接的红素有效地提高了PLA矩阵内的机械性能和兼容性.
改性素作为一种有价值的增强填充剂,增强了PLA复合材料的性能.
这种方法提供了一种可持续的方法,用于从素和PLA开发高性能生物复合材料.

关键词:

六甲二异酸是什么六甲二异酸在Lignin的基础上.聚乳酸是一种多乳酸.

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