Dynamics and Control of Colloidal Phenomena in Agro-environment Determined by Hydrodynamic and Surface Process

分析了通过溶解、成核、胶束、吸附、扩散、沉降和流化等方式控制化学物质状态和迁移的环境胶体和界面的物理化学和水动力因素，重点分析了与人类活动和农业生物环境自然条件有关的混凝和絮凝行为。这些活动与计划在2008年召开京都会议的国际反污染联盟密切相关。作为这一研究活动的一部分，国内组织了一系列会议，讨论了两者之间的相互关系。除此之外，本年度还获得了以下结果。1)利用专用粘度计对粘土悬浮液的零剪切极限流变学进行了分析，揭示了电双层在其非牛顿行为的出现中所起的作用。2)利用DLVO理论揭示了胶体运输过程中胶体流势和胶体稳定性同时分析的有效性。3)分析了聚电解质在胶体表面的动力学行为与胶体颗粒絮凝的关系。

Physicochemical and hydrodynamic factors of environmental colloids and interface which control the state and migration of chemical substances by means of dissolution, nucleation, micellization, adsorption, diffusion, sedimentation and fluidization are analyzed paying emphasis on the coagulation and flocculation behavior in relation to human activity and natural condition of agro-bio-environment.These activities are closely linked to the international community of Interface against Pollution that plans the Kyoto meeting in 2008. The interrelation has been discussed a series of domestic conferences organized as a line this research activity. In addition to this, the following results are obtained in this year.1) The analysis of zero shear limit rheology of clay suspension by means of special viscometer revealed the role of electrical double layers in the appearance of non-Newtonian behavior.2) Validity of simultaneous analysis of the streaming potential and the stability of colloid in the fate of colloid facilitated transportation was revealed in terms of DLVO theory.3) Dynamic behavior of polyelectrolyte on the surface of colloid was analyzed in relation to flocculation of colloidal particles.