Application of cetylpyridinium chloride in dispersion of antibacterial ceramic glaze

来源期刊：中国有色金属学报(英文版)2006年第6期

论文作者：柴立元 程明明 彭兵 黄毅 张晓飞

文章页码：1426 - 1430

Key words：surfactant; antibacterial glaze; adsorption isotheral; dispersion stability; zeta potential

Abstract: The adsorption of cetylpyridinium chloride(CPC) onto a ceramic glaze mixture composed of limestone, feldspar, quartz, kaolin, and antibacterial agent was studied. Both adsorption isothermals and the average particle zeta potential were investigated in order to understand the suspension stability as a function of pH, ionic strength, and surfactant concentration. The results show that under the optimal conditions such as pH value of 7 or 9, 0.01 mol/L of ionic strength and around critical micelle concentration(CMC) of surfactant, antibacterial ceramic glaze acquires fine dispersion stability. The adsorption of CPC on ceramic glaze particles is in accordance with Langmuir model in 0.01mol/L at pH=7 and pH=9. The adsorption of small amounts of cationic CPC onto the primarily negatively charged surfaces of the particles in the pH range of 7-9 produces strong attraction and flocculation due to hydrophobic interactions. High concentration of surfactant under 0.01 mol/L of salt provides high zeta potential, which produces a high stability.

基金信息：Industrial Key Project of Science and Technology of Hunan Province, China