文献类型：期刊文献

中文题名：聚乙烯醇在Al_(2)O_(3)、SiO_(2)颗粒上的吸附及对Zeta电位的影响

英文题名：Adsorption of Polyvinyl Alcohol on Al_(2)O_(3),SiO_(2)and Its Effect on the Zeta Potential of Particles

作者：韦园红[1];虞大红[1];叶汝强[1];刘洪来[1];胡英[1]

机构：[1]华东理工大学化学系,上海200237

年份：2001

卷号：27

期号：1

起止页码：99

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助项目(29736170)

语种：中文

中文关键词：Zeta电位;高分子吸附;胶体;聚乙烯醇

外文关键词：Zeta potential;polymer adsorption;colloid;polyvinyl alcohol

摘要：测定了超细 Al2 O3、Si O2 颗粒对聚乙烯醇 (PVA)的吸附 ,考察了 Na Cl对吸附量的影响 ,发现当 Na Cl浓度大于 0 .1 mol· L-1时 ,随着 PVA浓度的升高 ,吸附量会出现一个突跃性的升高。用微电泳仪测定了吸附 PVA前后 Al2 O3、Si O2 颗粒 Zeta电位的变化 ,发现 Si O2 的等电点不受PVA的影响 ,而 Al2 O3吸附了 PVA后 ,等电点降低。
The adsorption isothermals of polyvinyl alcohol (PVA) on Al 2O 3 and SiO 2 particles have been measured. The effect of NaCl on the adsorption of PVA has been inspected. It is found that the adsorption amount increases rapidly with increase of PVA concentration when NaCl concentration is higher than 0.1mol/L. Zeta potentials of Al 2O 3 and SiO 2 particles with and without PVA adsorption have been obtained from the electrophoresis measurement. It is shown that the isoelectric point of SiO 2 is not affected by the adsorption of PVA, while the isoelectric point of Al 2O 3 decreases with the adsorption of PVA.