Preparation of amphiphilic SiO2/APTES/PFOA nanoparticles and study on their interfacial performance
WANG Gang1,2, QIU Jun-bin1, ZHU Jia-ping1, TAN Hua1, HOU Zhao-kai3
1. School of Chemistry, Guangdong University of Petrochemical Technology, Maoming 525000, China; 2. Guangdong Research Center for Unconventional Energy Engineering Technology, Maoming 525000, China; 3. Key Laboratory for EOR Technology of Ministry of Education, Northeast Petroleum University, Daqing 163318, China
Abstract: Based on the interface protection modification method,amphiphilic SiO2/APTES/PFOA nanoparticles with hydrophilic amino group (—NH2) at one side and hydrophobic fluorocarbon chain at the other side are prepared.The chemical composition,surface structure,surface activity and foam properties of the prepared nanoparticles as well as surface morphology of paraffin microspheres are characterized by infrared spectrometer,laser confocal microscope,surface tensiometer,dynamic foam analyzer and scanning electron microscope.The results show that with the increasing concentration of aminopropyl triethoxysilane (APTES),the modified SiO2/APTES particles get adsorbed more tightly on the surface of paraffin droplets,and the corresponding amphiphilic particles prepared own higher surface activity.The surface tension of the particles can reach 33.7 mN·m-1 when the concentration of the particles in dispersion solution is 0.6%,showing an excellent surface activity.If the concentration reaches 0.4%,the amphiphilic particles can inhibit effectively the bubble collapse and liquid film drainage,and the prepared foam from them has excellent stability.
王刚, 邱俊彬, 朱佳平, 谭华, 侯兆凯. 两亲性SiO2/APTES/PFOA纳米颗粒的制备及其界面性能研究[J]. 现代化工, 2020, 40(S1): 88-91.
WANG Gang, QIU Jun-bin, ZHU Jia-ping, TAN Hua, HOU Zhao-kai. Preparation of amphiphilic SiO2/APTES/PFOA nanoparticles and study on their interfacial performance. Modern Chemical Industry, 2020, 40(S1): 88-91.
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