净化工艺用于产生离子性氨酸-烯胺聚合物
Xiaoqi Wang1, Weijue Gao1, Fangong Kong2
1Department of Chemical Engineering and Green Processes Research Centre, Lakehead University, 955 Oliver Road, Thunder Bay, Ontario P7B5E1, Canada.
ACS omega
|November 4, 2024
概括
乙醇提取和膜过对于净化氨酸-烯胺-二二甲基化共聚合物是有效的. 与酸化相比,这些方法产生了具有更好的溶解性,热稳定性和花效率的聚合物.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
背景情况:
- 聚合物净化对于高性能材料至关重要.
- 基于素的共聚合物提供了可持续的替代品.
- 需要有效的净化方法来净化素-p ((AM) -p ((DADMAC).
研究的目的:
- 为了评估实验室规模的净化技术,为化 (化-p(AM) -p(DADMAC)) 合物,氨酸-烯胺-二甲二甲基.
- 为了比较乙醇提取,膜过和酸化的有效性.
- 描述净化对聚合物的性能和性能的影响.
主要方法:
- 素,烯胺 (AM) 和二甲基二甲基化 (DADMAC) 的联合聚合.
- 通过乙醇提取,膜过 (透析) 和酸化进行净化.
- 使用H NMR进行表征,溶解性测试,热重力测量分析,质学和花研究.
主要成果:
- 乙醇提取和膜过产生了高纯度的木质素-p ((AM) -p ((DADMAC) 具有更高的产量和可溶性.
- 1H NMR证实了通过膜透析有效去除未反应的单体.
- 纯化聚合物表现出增强的热稳定性 (220°C与160°C相比) 和优越的花性能.
结论:
- 乙醇提取和膜过是素-p (AM) -p (DADMAC) 的优质净化方法.
- 膜过,特别是具有较大的孔径,是一个环保的净化选项.
- 在这项研究中,聚合物溶解度显著影响溶液粘度,而不是分子量.
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