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替代度对基质酸盐基弹性体的微相分离和机械性能的影响

Satoshi Katsuhara¹, Naoki Sunagawa², Kiyohiko Igarashi³

¹Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Japan.

Carbohydrate polymers

|June 15, 2023

概括

研究人员使用可再生材料纤维素酸盐开发了可持续的热塑性弹性体 (TPE). 调整纤维素酸盐的情况.

科学领域:

聚合物科学聚合物科学
材料科学材料科学材料科学
可持续化学可持续化学

背景情况:

热塑性弹性体 (TPEs) 广泛使用,但通常来自石油.
开发可再生资源的环保替代品对于可持续性至关重要.
纤维素酸具有作为可生物降解和可再生TPE硬片段的潜力.

研究的目的:

为了合成和表征基于纤维素酸盐的新型ABA型triblock共聚合物.
研究纤维素酸的替代度 (DS) 对TPE特性的影响.
评估这些材料作为传统TPE的可持续替代品的潜力.

主要方法:

合成ABA类型的triblock共聚合物 (AcCel_x-b-PDL-b-AcCel_x) 具有不同的DS.
使用小角度X射线散射 (SAXS) 来分析微相分离的表征.
机械测试,以评估弹性质的特性,性和应力松.
在水环境中进行初步生物降解试验.

主要成果:

降低纤维素酸盐的DS导致了更有序的微相分离结构.
由于微相分离,所有合成的共聚合物都表现出类似弹性质的特性.
下DS提高了材料性,减少了应力放松.
减少的DS增强了TPE的生物降解潜力.

结论:

基于纤维素酸盐的TPE是可行的可持续材料.
替代度是调整TPE特性的一个关键参数.
这些新型TPE提供了更好的性能和生物降解性,为下一代可持续材料铺平了道路.

关键词:

生物降解性生物降解性纤维素乙酸盐的使用情况机械性质机械性质微相分离微相分离自动组装自动组装热塑性弹性体的热塑性弹性体

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