由可再生原料制成的半晶聚胺
Cristian P Woroch1, India W Cox1, Matthew W Kanan1
1Department of Chemistry, Stanford University, 337 Campus Drive, Stanford, California 94305, United States.
Journal of the American Chemical Society
|December 27, 2022
概括
研究人员从生物基5-氨基甲基-2-酸 (AMF) 和CO2中开发出一种新型的半结晶半芳香聚胺 (PAMF). 这种可持续的聚合物具有出色的热性能和可回收性,克服了以前的聚胺的局限性.
科学领域:
- 聚合物化学
- 材料科学
- 可持续的聚合物
背景情况:
- 半芳香聚胺 (SAP) 是通常来自石化产品的高性能聚合物.
- 在生物基的SAP中,特别是使用 furan-2,5-dicarboxylic acid (FDCA) 的SAP中,达到结晶性是一项挑战,通常产生无形材料.
- 需要具有可再生的高性能聚合物,
研究的目的:
- 合成和描述一种新型的半晶体,部分可再生的半芳香聚胺 (SAP).
- 研究纤维素衍生单体在制造高性能可持续聚合物方面的潜力.
- 了解 furan SAP 中结晶性的结构基础.
主要方法:
- 用二氧化碳对5-氨基甲基-2-酸 (AMF) 进行多凝聚,以产生多氨基-2-酸 (PAMF).
- PAMF的热特性 (玻璃过渡和化温度) 的表征.
- 分子动力学 (MD) 模拟以分析影响结晶性的结构差异.
主要成果:
- 成功合成半晶体PAMF,一种由生物基AMF和CO2衍生的新型SAP.
- PAMF的玻璃过渡和化温度与商业聚合物相美,并且比以前的酸酸盐更高.
- MD模拟表明分子内键显著影响PAMF的半结晶性,与无形的FDCA基础的SAP不同.
结论:
- 聚氨基-2-酸 (PAMF) 代表了开发高性能半晶体生物基AP的突破.
- PAMF为以石化为基础的聚合物提供了一个可持续的替代品,具有共聚和化学回收的潜力.
- 了解分子内结的作用为设计未来的晶体生物基聚合物提供了洞察力.
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