双季铵盐改性纳米SiO2的乳化性能研究

doi:10.13218/j.cnki.csdc.2017.08.003

摘要/Abstract

摘要： 用双季铵盐BQAS-16对纳米SiO₂进行表面改性,并以改性后的纳米SiO₂为乳化剂,制备了Pickering乳液。探究了改性比例、pH、盐的加入和油水体积比对Pickering乳液稳定性的影响。结果表明,与纳米SiO₂相比,BQAS-16改性后的纳米SiO₂具有更优异的乳化性能。随着BQAS-16用量的增加,乳液的稳定性增加。随着pH的增大,乳液的稳定性基本不变;但当pH增至13时,乳液的稳定性显著降低。随着NaCl浓度的增加,乳液的稳定性基本不变。当油水体积比为1∶1 时,乳液的稳定性最好。

关键词: 双季铵盐, 纳米SiO₂, Pickering乳液, 乳化性能

Abstract: Bis-quaternary ammonium salts BQAS-16 were used for the surface modification of nano-SiO₂ particles,and the modified SiO₂ nanoparticles were used as emulsifying agent for preparation of Pickering emulsion.Effects of the ratio of modification,the pH value,the addition of salt and the volume ratio of oil to water on the stability of Pickering emulsion were examined.Results show that the nano-SiO₂ particles modified by BQAS-16 display better emulsifying performance as comparing with the nano-SiO₂ particles.The stability of emulsion increases with increasing of the dosage of BQAS-16.With increasing the pH value,the stability of emulsion is basically no change.However,at the pH=13,the stability of emulsion decreases significantly.Moreover,as the NaCl dosage increases,the stability of emulsion is basically no change.When the volume ratio of oil to water is 1∶1,the emulsion is at the most stable state.

Key words: bis-quaternary ammonium salts, nano-SiO₂ particles, Pickering emulsion, emulsifying performance

中图分类号:

TQ423.12

黄威华, 邹华, 赖璐, 梅平. 双季铵盐改性纳米SiO₂的乳化性能研究[J]. 日用化学工业, 2017, 47(8): 430-434.

HUANG Wei-hua, ZOU Hua, LAI Lu, MEI Ping. Studies on the emulsifying performance of nano-SiO₂ particles modified with bis-quaternary ammonium salts[J]. China Surfactant Detergent & Cosmetics, 2017, 47(8): 430-434.

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双季铵盐改性纳米SiO₂的乳化性能研究

Studies on the emulsifying performance of nano-SiO₂ particles modified with bis-quaternary ammonium salts

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