Reversible Association/Gelation of Amphiphilic Cation-Anion Polymers

两亲性阳离子-阴离子聚合物的可逆缔合/凝胶化

• 批准号: 8913318
• 负责人: Arthur Watterson
• 金额: $ 23.72万
• 依托单位: University of Massachusetts Lowell Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-04-15 至 1993-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8913318&HistoricalAwards=false
• 关键词: Reversible; Association; Gelation; Amphiphilic; Cation

This research focuses on the preparation and characterization of novel amphiphilic new monomers and polymers that contain both cationic and anionic charges. The polymers to be studied will be polyampholytes from hydrophobically-based ion-pair comonomers and polyaminimides from dipolar ionic monomers. These systems will incorporate hydrophobic substituents with cationic and anionic substituents such that increased polymer-polymer inter- actions in apolar solvents can occur. The combination of electrostatic and hydrophobic (apolar) interactions in polar solvents is believed to lead to aggregation or gelation when such polymer systems are placed under shear. The research should increase understanding of the relatively rare phenomena of shear thickening.

本研究的重点是制备和表征具有阳离子和阴离子电荷的新型两亲性单体和聚合物。要研究的聚合物将是来自疏水性离子对共聚物的聚两性聚合物和来自偶极离子单体的聚胺酰亚胺。这些体系将包括疏水取代基与阳离子和阴离子取代基，这样增加聚合物-聚合物在极性溶剂中的相互作用可以发生。在极性溶剂中，静电和疏水（极性）相互作用的结合被认为会导致聚合物体系在剪切作用下聚集或凝胶化。这项研究应该增加对相对罕见的剪切增厚现象的理解。