通过CO2/COS的催化ROCOP实现可持续聚合物的门户,使用来自衍生物的可再生环氧体单体
Sriparna Sarkar1, Mani Sengoden1, Chia-Min Hsieh1
1Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States.
概括
从生物质衍生物furfural合成的可再生聚合物提供了增强的生物降解性. 这些基于的环氧化物与二氧化碳和COS共聚合,产生具有良好的热稳定性和可调节的机械性能的材料,从而使潜在的回收利用成为可能.
科学领域:
- 聚合物化学 聚合物化学
- 可持续材料 可持续材料
- 可再生原料是可再生的原料.
背景情况:
- 对基于化石燃料的聚合物的可持续替代品的需求不断增长.
- 作为化学合成的可行可再生原料的基纤维素生物质.
- 作为 furan 基单体的关键平台化学物质,从生物质中提取的furfural.
研究的目的:
- 从furfural衍生物合成一种新的基于 furan 的环氧单体.
- 研究环开合聚合 (ROCOP) 的环氧化物与二氧化碳和COS.
- 评估产生的聚合物的热,机械和降解性能.
主要方法:
- 使用化和酸合成一种基于的环氧化单体.
- 用二氧化碳 (CO2) 和二氧化碳硫化物 (COS) 进行催化ROCOP,使用二元化Co-salen/Cr-salen和盐催化剂.
- 聚合物的特性,包括热稳定性 (Tg),水解降解性,粘合性能 (拉皮剪切) 和机械硬度/模块 (纳米纹).
主要成果:
- 成功合成了一种基于 furan 的环氧化物单体.
- 生产的聚碳酸盐和聚单碳酸盐具有良好的热稳定性 (高达150°C),玻璃过渡温度 (Tg) 分别为58.6°C和49.2°C.
- 证明了聚碳酸的水解降解性和由此产生的二醇回收到环氧化物单体的可循环利用性.
- 聚碳酸显示出优越的粘合性能,而聚单碳酸显示出更高的硬度和弹性模量.
结论:
- 来自可再生furfural的 furan 基环氧化物是可持续聚合物合成的有效单体.
- 合成的聚合物表现出有前途的热稳定性,可调整的机械性能和闭环回收的潜力.
- 这项研究强调了一条可行的通往生物基聚合物的途径,这些聚合物具有针对不同应用的定制功能.
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