关于用天然原料获得的环氧聚氨化合物的酶降解过程的研究
Anna Sienkiewicz1, Piotr Czub1
1Department of Chemistry and Technology of Polymers, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska Str. 24, 31-155 Kraków, Poland.
Molecules (Basel, Switzerland)
|December 17, 2024
概括
环氧聚氨复合材料与木粉的酶降解显示出显著的生物降解. 在酸盐缓冲剂中30°C和pH值6.8的猪胰腺脂酶是最有效的,特别是用化木粉.
科学领域:
- 聚合物科学 聚合物科学
- 生物技术是生物技术.
- 材料科学 材料科学 材料科学
背景情况:
- 聚合物材料的消耗增加导致处理挑战.
- 环氧聚氨复合材料被广泛使用,但也引起了环境问题.
- 生物降解为聚合物废物提供了一个可持续的处置途径.
研究的目的:
- 为了研究用木粉填充的环氧聚氨复合材料的酶降解.
- 评估填充剂修改 (商业化) 和酶类型对生物降解的影响.
- 为了确定这些聚合物复合物的生物降解的最佳条件.
主要方法:
- 七种环氧聚氨复合物复合物的酶降解超过28天.
- 在不同的环境条件下进行测试:缓冲器类型,pH值 (6.8),温度 (30°C) 和酶度.
- 采用两种脂酶:豆叶脂酶 (微生物) 和猪胰腺脂酶 (动物).
- 通过减肥,接触角度测量和表面形态 (SEM) 来分析生物降解.
主要成果:
- 最佳的生物降解发生在30°C,pH值为6.8,用猪胰腺脂酶在酸盐缓冲剂中.
- 在相同的条件下,Rhizipus Oryzae Lipase也显示出有效性.
- 复合材料含有化木粉的复合材料对酶降解的敏感性更高.
- 观察到的显著变化是:体重减少7.0%,接触角度减少 (116.7°至27.2°),以及表面侵蚀有洞.
结论:
- 酶降解是一种可行的方法,可以减少环氧聚氨复合材料对环境的影响.
- 木粉的商用化提高了聚合物复合材料的生物降解性.
- 猪胰腺脂酶在优化条件下在降解这些材料方面表现出卓越的性能.
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