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加快气候变化测试 (AWT) 和细菌生物降解对多3-基酸-co-3-基酸 (PHBV) /大麻微纤维生物复合材料性能的影响

Madara Žiganova¹, Remo Merijs-Meri¹, Jānis Zicāns¹

¹Institute of Chemistry and Chemistry Technology, Faculty of Natural Sciences and Technology, Riga Technical University, 3 Paula Valdena Street, LV-1048 Riga, Latvia.

|March 13, 2024

概括

这项研究研究了气候变化和生物降解对多3-基酸-co-3-基酸 (PHBV) 生物复合物的影响. 气候变化增加了硬度,但强度下降,而处理的微纤维增强了生物降解.

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
生物材料工程生物材料工程

背景情况:

可持续材料的研究重点是可生物降解的聚合物,如聚3-基酸-co-3-基酸) (PHBV).
了解PHBV复合材料的环境退化对于其生命周期评估至关重要.
在PHBV生物复合材料中作为增强剂,正在探索油菜微纤维 (RS).

研究的目的:

评估加速气候变化和细菌生物降解对PHBV/RS生物复合物的影响.
评估环境暴露后机械,热和形态性质的变化.
研究微纤维处理对复合材料降解行为的影响.

主要方法:

加速气候测试模拟户外条件.
在土壤环境中进行细菌生物降解试验.
使用FTIR-ATR分析结构性,机械性 (抗拉强度,刚性,破裂时延长),热性 (通过DSC结晶性) 和形态性质.

主要成果:

加快的气候变化增加了硬度,但降低了PHBV生物复合材料的抗拉强度和破裂时的延伸.
气候变化导致PHBV结晶度增加,这归因于水解和RS的核化作用.
FTIR-ATR数据显示,增加的晶度与特定光谱强度比率之间存在相关性.
微纤维处理增强了生物降解,特别是未经化学处理的RS.
所有开发的PHBV复合材料的生物降解速度都比纯PHBV更快.

结论:

在加速的气候变化下,PHBV/RS生物复合材料经历了显著的性能变化.
微纤维增强和处理影响耐候性和生物降解率.
该研究提供了关于基于PHBV的可持续材料的环境命运和性能的见解.

关键词:

N-甲基摩尔福林N-氧化物处理加快了气候变化的加速.性处理是一种性处理.生物复合物生物复合物生物降解生物降解聚3-xybutyrate-co-3-xyvalerate) 是一种聚3-xybutyrate-co-3-xyvalerate) 的一种化合物,它具有多种成分.大麻种子的微纤维.

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