含羧基乳胶粒子体系的流变性质与碱增稠机理

JOURNAL OF JILIN UNIVERSITY(SCIENCE EDITION)(2002)

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Abstract
采用流变学实验数据分析乳胶粒子体系的致粘机理.认为普通硬球型乳胶粒子体系的致粘机理与聚合物链段的亲水性有关.聚合物链段的亲水性越强,普通硬球型乳胶粒子体系的粘度越大.在酸性介质中,含羧基乳胶粒子体系的致粘机理与普通硬球型乳胶粒子体系一致.但在碱性介质中,含羧基乳胶粒子体系呈现碱增稠现象,认为这种碱增稠现象是由粒子间氢键形成的桥武结构所致,这一观点与早期的"乳胶粒的溶胀乃至溶解"的推断不同.
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latex system,alkali-thickening
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