生物基乙烯网络热从异索化物和烯
Emily A Prebihalo1, Melody Johnson2, Theresa M Reineke1
1Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States.
ACS macro letters
|April 26, 2024
概括
从可再生糖和源中合成了新的可降解热. 这些可持续的聚合物网络提供可调节的机械性能和快速降解,推进环保材料科学.
科学领域:
- 聚合物化学 聚合物化学
- 可持续材料科学科学 可持续材料科学
- 有机合成 有机合成
背景情况:
- 耐热聚合物具有出色的机械性能,但由于永久交叉连接,它们在使用寿命结束时会带来挑战.
- 从可再生资源中开发固有的可降解热对于可持续的聚合物化学至关重要.
- 用于热固体网络的可再生能源衍生单体仍然是一个未被充分探索的领域.
研究的目的:
- 通过使用糖和基单体合成新的可降解热固体网络.
- 研究这些可再生能源网络的机械和热性能.
- 为了评估合成的耐热材料的可降解性.
主要方法:
- 基于糖和基的新型单体的合成,用于乙烯网络的形成.
- 通过乙烯的点击化学交叉链接单体.
- 机械性质的表征 (例如,应变时的应变,应力-应变行为) 和热性质 (例如,降解温度,玻璃过渡温度).
- 在基本条件下评估网络退化情况.
主要成果:
- 合成的热网表现出广泛的机械性能,压力破裂率从12%到200%.
- 网络显示了各种机械反应,包括塑性变形和线性应力-应变行为,这取决于所使用的醇.
- 热降解发生在200°C以下,玻璃过渡温度在-17°C至31°C之间.
- 在基本条件下,几乎所有合成的热聚都在2天内完全降解.
结论:
- 从糖和烯中提取可再生能源的单体可以用来创建多样化的可降解热固体网络库.
- 选择醇交叉连接器显著影响由此产生的网络的机械和热性能.
- 这些发现扩大了可持续聚合物化学的范围,通过从可再生原料中提供可调节,可降解的热材料.
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