聚丙烯酸铵在纳米Y-TZP上的定量吸附研究

无机材料学报

聚丙烯酸铵在纳米Y-TZP上的定量吸附研究

孙静; 孙伟燕; 高濂; 郭景坤

中国科学院上海硅酸盐研究所高性能陶瓷; 超微结构国家重点实验室上海 200050

收稿日期:1998-07-23 修回日期:1998-08-21 出版日期:1999-08-20 网络出版日期:1999-08-20

Quantitative Adsorption of Ammonium Salt of Polyacrylic Acid on Nano size Y TZP

SUN Jing, SUN Wei-Yan, GAO Lian, GUO Jing-Kun

State Key Lab of High Performance Ceramics & Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China

Received:1998-07-23 Revised:1998-08-21 Published:1999-08-20 Online:1999-08-20

摘要/Abstract

摘要： 利用紫外－可见分光光度计研究了聚丙烯酸铵在纳米Ｙ ＴＺＰ上的定量吸附情况测定波长为２６０ｎｍ　分散剂的吸附量受球磨时间、溶液的酸碱性以及分散剂加入量的影响当ｐＨ＝１.０２时，吸附属于高度亲和型吸附，最高吸附百分数达９８％ 加入分散剂后，除强酸条件下，整个体系的ｐＨ趋近８.３，Ｚｅｔａ电势　在３５～４０ｍＶ之间在较宽的ｐＨ范围里，体系初始的ｐＨ值对吸附情况影响较小分析产生这种现象的原因是由于聚丙烯酸铵极强的缓冲能力造成的.

关键词: 聚丙烯酸铵, 定量吸附, 紫外光谱, 纳米Y-TZP

Abstract: The quantitative adsorption of ammonium salt of polyacrylic acid on nano-size Y-TZP powder was investigated by using UV adsorption spectrum. The adsorption of
PAA-NH₄ decreases as pH increases, because the PAA-NH_4 is more negatively dissociated. When the pH is 1.02, the adsorption type belongs to high affinity. The highest
adsorption percent can reach as high as 98%. If initial pH falls in the range of 2.7 to 13.6, the pH of the supernate is near to 8.3 and their Zeta potential
is in the range of --35 to --40mV. In a wide pH range the adsorption ability is less effected by the initial pH, due to the high buffer ability of PAA-NH₄.

Key words: ammonium salt of polyacrylic acid, quantitative adsorption, UV spectrum, nano Y-TZP powder

中图分类号:

TF123

孙静,孙伟燕,高濂,郭景坤. 聚丙烯酸铵在纳米Y-TZP上的定量吸附研究[J]. 无机材料学报.

SUN Jing,SUN Wei-Yan,GAO Lian,GUO Jing-Kun. Quantitative Adsorption of Ammonium Salt of Polyacrylic Acid on Nano size Y TZP[J]. Journal of Inorganic Materials.

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