摘要
通过改进的Pickering乳液模板法,对合成的单分散Si O2纳米颗粒的局部表面进行氟化硅烷改性,制备了具有两亲性的Janus颗粒;研究了其在气/液表面上的自组装行为和泡沫性能.采用粒度分析仪、扫描电子显微镜(SEM)、傅里叶变换红外光谱仪(FTIR)、荧光显微镜、界面流变仪和泡沫扫描分析仪等对Si O2颗粒的粒径分布、石蜡乳滴的表面形貌以及Janus颗粒的化学组成、表面结构、界面活性和泡沫性能进行了表征.研究结果表明,制备的Janus颗粒表面呈现非对称结构.界面活性测试结果表明,Janus颗粒具有良好的界面活性,可以将气/水表面的表面张力降低至38 m N/m.泡沫性能测试结果表明,Janus颗粒能够有效地抑制气泡合并、歧化和液膜排液,所制备的泡沫具有良好的稳定性.
The monodisperse silica nanoparticles were synthesized,and then amphiphilic Janus particles decorated with fluorinated chains were prepared by improving Pickering emulsions method. The self-assembly behavior at the air-water interface and foam properties of Janus particles were investigated. The size distribution of silica nanoparticles,surface morphology of wax colloidosomes and chemical composition,surface structure,interfacial activity,foam properties of Janus particles were characterized by particle size analyzer,scanning electron microscopy（ SEM）,Fourier transform infrared spectroscope（ FTIR）,fluorescence microscope,interfacial rheometer and foamscan. The results show that the surface of the prepared Janus particles is asymmetric.The test results of interfacial activity show that Janus particles have favorable interfacial activity at the gas/liquid interface,and the surface tension could be reduced to 38 m N/m. The test results of foam properties show that Janus particles effectively controll the coalescence and disproportionation,and the foam shows excellent stability.
作者
王刚
王克亮
逯春晶
王影
WANG Gang;WANG Keliang;LU Chunjing;WANG Ying(Key Laboratory of Enhanced Oil and Gas Recovery, Ministry of Education, Northeast Petroleum University, Daqing 163318, China;State Key Laboratory of Inorganic Synthesis ＆ Preparative Chemistry, Jilin University, Changchun 130012, China)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2018年第5期990-995,共6页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:51374073)资助~~
