摘要
通过测定表面张力γg L、润湿角θ,计算润湿吉布斯自由焓ΔG,确定选用活性剂的种类,同时测定加入非离子表面活性剂的醋酸锌溶液的表面张力,并结合磷酸锌对OP 10吸附量Г,推测OP 10在微晶磷酸锌制备中的作用机理。结果表明:非离子表面活性剂OP 10可降低醋酸锌溶液的表面张力,形成临界胶束,在新生成的磷酸锌表面产生S型吸附,形成空间位阻效应,从而阻止磷酸锌粒子的聚集,控制磷酸锌颗粒尺寸。
To select the suitable surfactant,wetting Gibbs free energy change ΔG were calculated by the measurement for surface tensionγg-L and wetting anglesθ of Zinc phosphate with different surfactants. According to the measured values for surface tension of zinc acetate solution having non-ionic surfactant and the corresponding adsorption of OP-10 on Zinc Phosphate,the action mechanism of OP-10 in preparation of microcrystalline Zinc Phosphate was inferred. The results show that the non-ionic surfactant can reduce the surface tension of zinc acetate aqueous solution to form critical micelle and produce S-style absorption on the surface of original zinc phosphate to form the sterically hindered effect,which are helpful to preventing particle agglomeration and diminishing the size of zinc phosphate.
出处
《表面技术》
EI
CAS
CSCD
2005年第3期54-56,共3页
Surface Technology
基金
广西科技厅青年基金项目(桂科青0339012)
广西教育厅项目(2003)
广西民族学院重点项目(2003)
关键词
表面活性剂
磷酸锌
微细晶体
机理
Surfactant
Zinc Phosphate
Microcrystalline
Mechanism
