文献类型：期刊文献

英文题名：Meso-Microscale Study of Glycerol/Dodecanol Pickering Emulsions Stabilized by Polystyrene-Grafted Silica Nanoparticles for Interfacial Catalysis

作者：Zhao, Guolin[1,2,3];Hong, Bing[3];Bao, Bo[1,2];Zhao, Shuangliang[1,2];Pera-Titus, Marc[3]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[3]UMI 3464 CNRS Solvay, E2P2L, Shanghai 201108, Peoples R China

年份：2019

卷号：123

期号：20

起止页码：12818

外文期刊名：JOURNAL OF PHYSICAL CHEMISTRY C

收录：;EI(收录号：20192006916815);WOS:【SCI-EXPANDED(收录号:WOS:000469292700033)】；

基金：This work was supported by the National Natural Science Foundation of China (Nos. 21808056, U1707602, and 21878078), and the 111 Project of China (No. B08021). S.Z. acknowledges the support of Fok Ying Tong Education Foundation (151069). CNRS and Solvay are also acknowledged for funding.

语种：英文

外文关键词：Dissipative particle dynamics - Glycerol - Emulsification - Ostwald ripening - Grafting (chemical) - Polystyrenes

摘要：In this study, we report a combined meso-microscale computational study of Pickering emulsions stabilized by sulfonated polystyrene-grafted silica nanoparticles for the glycerol/dodecanol system using dissipative particle dynamics. Different glycerol/dodecanol emulsification regimes could be ascertained as a function of the length of polystyrene brushes as well as the surface density, sulfonation degree, and distribution of sulfonic acid groups in the brushes, matching experimental results. Local nanomixing effects between glycerol and dodecanol could be clearly identified in the vicinity of the catalytic sulfonic acid groups, unraveling potential reactivity zones for etherification.