测量聚电解质和聚酸中的水友性
Nagham Abou Hamad1, John Akintola1, Joseph B Schlenoff1
1Department of Chemistry and Biochemistry, The Florida State University, Tallahassee, Florida 32308-4390, United States.
Macromolecules
|April 14, 2025
概括
充电的高分子.
科学领域:
- 聚合物科学和材料化学,专注于充电聚合物的水化.
背景情况:
- 水的亲和力或水友性对于溶液和材料中的多电解质行为至关重要.
- 量化水友性是具有挑战性的,仅限于简单可溶性之外的方法有限.
- 聚电解质复合物 (PEC) 和聚子 (PZ) 是水化是关键的材料类型.
研究的目的:
- 建立一种可靠的方法来排列带电聚合物的水友性.
- 为了比较各种多电解质 (PE) 和多晶子 (PZs) 的水亲和力.
- 为了研究聚合物结构和水化热量之间的关系.
主要方法:
- 用静态光散射进行水性尺寸排除色谱,以确定聚合物尺寸缩放.
- 溶液热量计测量溶液 (ΔHsol) 在0.1M NaCl中的度.
- 对一系列阴离子,阴离子PE和PZs的分析.
主要成果:
- 所有研究的聚合物都表现出溶液的外热度,表明有利的水合.
- 基于 ΔHsol 值,建立了一个清晰的水友性排名.
- 与非甲基酸基聚合物相比,甲基酸基聚合物显示出明显更高的水友性.
- 波利兹维特里昂表现出强烈的水分,支持它们的抗污染特性.
结论:
- 溶液热量计提供了一种强大的方法来量化和排名聚合物水友性.
- 聚合物结构,特别是甲基酸盐组的存在,强烈影响水的亲和力.
- 聚聚酸是高度水合的,但它们的水结合不一定比所有聚电解质更强.
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