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生物基聚聚氨泡:由Aspergillus niger和Aspergillus clavatus进行合成和降解

Mara L Polo^1,2, Karen Russell-White², Santiago E Vaillard^1,2

¹Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), UNL-CONICET, Ruta Nacional 168, Km. 0 - Paraje "El Pozo", 3000, Santa Fe, Argentina.

|November 21, 2023

概括

这项研究比较了生物基聚氨 (PU) 泡的生物降解性,使用的是阿斯伯吉路斯真菌. 最降解的泡含有更多的化麻油 (MACO),表明其在生物降解中的重要性.

科学领域:

材料科学材料科学材料科学
微生物学微生物学
生物技术是生物技术.

背景情况:

生物基聚氨 (PU) 为传统塑料提供了可持续的替代品.
评估这些材料的生物降解性对于环境影响评估至关重要.
之前的研究已经探索了类似的PU材料的细菌降解.

研究的目的:

为了比较使用Aspergillus niger和Aspergillus clavatus的三种新的生物基PU泡的生物降解性.
为了研究泡成分,特别是合麻油 (MACO) 含量,对降解率的影响.
为这些生物基PU泡提出生物降解机制.

主要方法:

从麻油 (CO),MACO,多二酸 (TDI) 和水中制备三种聚聚氨泡.
在水性介质中进行的降解试验,使用孤立的Aspergillus niger和Aspergillus clavatus.
对不溶性和溶性降解产物的分析,以确定化学部分和分子量变化.

主要成果:

由于阿斯伯吉卢斯真菌的降解,产生了含有自由氧基,碳氧基和氨基基群的泡.
可溶性降解产品包括氨基,碳酸和甘油.
含有最高MACO含量的泡表现出最显著的降解,与更高度的水解键相关.

结论:

生物基PU泡可以被Aspergillus niger和Aspergillus clavatus降解. 生物基PU泡可以被Aspergillus niger和Aspergillus clavatus降解. 生物基PU泡可以被生物基PU泡降解.
存在MACO增加了PU泡的水解易感性和随后的生物降解.
对于这些材料,提出了一种涉及水解和氧化反应的生物降解机制.

关键词:

生物基聚合物生物基聚合物麻油是一种麻油.由真菌造成的退化.柔性泡是一种柔性泡.聚氨是一种聚氨.

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