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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式结构所致 ,这一观点与早期的“乳胶粒的溶胀乃至溶解”的推断不同
Rheological experimental data were used to analyze the mechanism of viscoelasticity of latex particles, and the mechanism of viscoelasticity of common hard-sphere latex particles was related to the hydrophilicity of the polymer chains.The hydrophilicity of the polymer chains was stronger than that of ordinary hardball The larger the viscosity of the latex particle system.In acidic medium, the mechanism of induced adhesion of the carboxyl-containing latex particle system is the same as that of the ordinary hard-sphere latex particle system, but in the alkaline medium, the carboxyl-containing latex particle system presents alkali thickening phenomenon, It is considered that this phenomenon of alkali thickening is caused by the bridge structure formed by the intermolecular hydrogen bonding, which is different from the early “swelling or dissolution of latex particles”