PREPARATION OF COMPOSITE FINE PARTICLES BY HETEROCOAGULATION
PREPARATION OF COMPOSITE FINE PARTICLES BY HETEROCOAGULATION
复制标题
DOI：
10.1007/bf01421816
复制
发表时间：
1987-10-01
影响因子：
2.4
通讯作者：
ANZAI, C
中科院分区：
文献类型：
--
作者：
FURUSAWA, K;ANZAI, C
为了制备由有机和无机化合物组成的规则复合粒子，基于非均聚理论，研究了两性小胶乳（2a=250 nm）和球形二氧化硅（2a=240-1590 nm）混合物的性质随pH、粒子数比、粒径比和电解质浓度的变化。显然，在合适的条件下，我们可以制备包含均匀复合颗粒的稳定混合悬浮液，所述均匀复合颗粒由规则地吸附在二氧化硅表面上的许多胶乳组成，并且每个复合颗粒作为孤立单元经历布朗运动。这种新型复合粒子对电解质、碱和酸介质都非常稳定，其表面电荷（符号和大小）可以通过改变介质的pH值来控制。
To prepare regular composite particles comprised of organic and inorganic compounds, based on heterocoagulation theory, the properties of the mixture of small amphoteric latices (2a=250 nm) and large spherical silica (2a=240–1590 nm) were investigated as a function of pH, particle number ratio, particle size ratio and electrolyte concentration in the medium. It is apparent that under suitable conditions, we may prepare a stable mixed suspension comprising uniform composite particles, which are made up of many latices regularly adsorbed on silica surfaces, and each composite particle is undergoing Brownian motion as an isolated unit. This new composite particle is very stable for electrolyte, base and acid medium, and its surface charges (sign and magnitude) can be controlled by changing the pH of the medium.