作　　者： ; ; ;

机构地区： 天津科技大学材料科学与化学工程学院

出　　处： 《天津科技大学学报》 2008年第3期33-37,共5页

摘　　要： 研究了阳离子聚合物对废纸浆溶解和胶体物质(Dissolved and Colloidal Substances,DCS)稳定性和动电性的影响.结果表明:高电荷密度低分子质量的聚胺主要通过电荷补丁机理导致DCS失稳;较高电荷密度、较高分子质量的高取代度阳离子淀粉主要通过电荷补丁和桥联絮凝两种作用导致DCS失稳;低电荷密度高分子质量的阳离子聚丙烯酰胺主要通过桥联絮凝机理导致DCS失稳;在理论电荷等当点附近,DCS动电性发生改变. The effect of cationic polymers on the stability and the electrokinetic characteristics of dissolved and colloidal substances from recycled newspaper pulp were investigated in this paper. The results show that polyamine （ PA ） with high charge density and low molecular weight destabilizes the dissolved and colloidal substances （ DCS ） mainly by charge patch mechanism. The high cationic starch （ HCS ） with medium charge density and molecular weight destabilizes the DCS by charge patch and bridging flocculation together. The cationic polyacrylamide （CPAM） with low charge density and high molecular weight destabilizes the DCS mainly by bridging flocculation. The electrokinetic characteristic of DCS is changed when it is closed to the theoretical point of neutralization.

关 键 词： 阳离子聚合物 稳定性 动电性

领　　域： [轻工技术与工程]