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在热友堆肥条件下,添加聚乳酸的乙化红素的生物降解行为

Sangwoo Park¹, Jungkyu Kim¹, June-Ho Choi²

¹Department of Agriculture, Forestry, and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea.

International journal of biological macromolecules

|October 20, 2023

概括

乙化红素 (AL) 延缓了聚乳酸 (PLA) 生物复合物的生物降解. 添加AL可以保持机械性能,并在堆肥环境中增强环保材料的耐用性.

科学领域:

材料科学材料科学材料科学
生物技术是生物技术.
环境科学环境科学

背景情况:

乙化素 (AL) 增强了与塑料聚合物的兼容性,为环保生物复合材料提供了潜力.
含有AL的聚乳酸 (PLA) 基生物复合物是有希望的,但它们的生物降解行为仍未研究.
调查AL对PLA生物复合材料生物降解的影响对于可持续材料开发至关重要.

研究的目的:

评估AL对以PLA为基础的生物复合物的生物降解特征在介质和热性条件下的影响.
了解微生物群落对素/PLA生物复合物的生物降解率的影响.
确定生物降解机制并评估AL作为添加剂的潜力,以改善PLA生物复合材料的性能.

主要方法:

生物降解实验在美索菲尔和热索菲尔堆肥条件下进行.
使用16S rDNA测序进行了微生物社区分析.
在整个生物降解过程中,对生物复合材料的物理化学特性进行了监测.

主要成果:

基于PLA的生物复合材料在热友环境下比在介友环境下降解得更快.
微生物群落的组成显著影响了生物降解率.
添加AL有效地延迟了PLA生物复合材料的热友生物降解.
主要的生物降解机制涉及水解,分子链裂变和无形区域的优先降解.

结论:

添加AL可以有效地延迟PLA生物复合物的生物降解,特别是在热友环境中.
通过最大限度地减少机械性能的下降和减缓生物降解,AL作为有益的添加剂.
与 kraft lignin (KL) 相比,AL在提高PLA生物复合材料的耐用性和生物降解性控制方面表现优越.

关键词:

乙化红素是什么? 乙化红素是什么生物复合材料是一种生物复合材料.生物降解生物降解卡夫特林尼尼 (英语:Kraft lignin) 是一种有机制的制材料.聚乳酸是一种多乳酸.

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