来自乳的可持续聚弹性体:合成,特性和酶性水解性
Guilhem X De Hoe1, Michael T Zumstein2, Brandon J Tiegs3
1Department of Chemistry, University of Minnesota , Minneapolis, Minnesota 55455-0431, United States.
Journal of the American Chemical Society
|January 17, 2018
概括
研究人员从可再生资源中开发出新的聚弹性体, 这些可持续材料为以石油为基础的弹性体提供了一个环保的替代品,
科学领域:
- 聚合物化学
- 材料科学
- 可持续的化学
背景情况:
- 化学交联弹性体具有优异的耐温性和耐溶剂性,但通常是石油衍生物和环境持久性.
- 对于传统弹性纤维的可持续替代品是非常重要的,这些替代品应对了使用寿命结束的环境问题.
研究的目的:
- 合成可再生,可酶化和机械竞争性的聚弹性体.
- 开发可调节性和生物降解性的以石油为基础的弹性体的可持续替代品.
主要方法:
- 聚弹性体的合成,使用一种新型的bis-lactone交联剂和星形的poly-methyl-ε-caprolactone.
- 弹性体机械性能和热稳定性的表征.
- 在中性pH值和环境相关温度下对酶性水解和生物降解的研究.
主要成果:
- 这种新型的bis (β-乳) 交叉连接剂促进了基键裂变,在交叉连接处形成β-基.
- 由此产生的聚弹性体具有可调节的机械性能,与商品带相美.
- 材料具有很高的热稳定性,低的玻璃过渡温度 (- 50 °C),并且随着温度的变化而容易发生完全的酶解.
结论:
- 这项工作成功地展示了从可再生资源中合成高性能,可持续的聚弹性体.
- 开发的弹性体在机械上具有竞争力,热稳定性和酶化,为传统材料提供了可行的环保替代品.
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