Thompson Kate L, Lane Jacob A, Derry Matthew J, Armes Steven P
Department of Chemistry, Dainton Building, University of Sheffield, Brook Hill, Sheffield, United Kingdom S3 7HF.
Langmuir. 2015 Apr 21;31(15):4373-6. doi: 10.1021/acs.langmuir.5b00630. Epub 2015 Apr 8.
Non-aqueous Pickering emulsions of 16-240 μm diameter have been prepared using diblock copolymer worms with ethylene glycol as the droplet phase and an n-alkane as the continuous phase. Initial studies using n-dodecane resulted in stable emulsions that were significantly less turbid than conventional water-in-oil emulsions. This is attributed to the rather similar refractive indices of the latter two phases. By utilizing n-tetradecane as an alternative oil that almost precisely matches the refractive index of ethylene glycol, almost isorefractive ethylene glycol-in-n-tetradecane Pickering emulsions can be prepared. The droplet diameter and transparency of such emulsions can be systematically varied by adjusting the worm copolymer concentration.
使用以乙二醇为液滴相、正构烷烃为连续相的二嵌段共聚物蠕虫状胶束制备了直径为16 - 240μm的非水皮克林乳液。最初使用正十二烷的研究得到了稳定的乳液，其浊度明显低于传统的油包水乳液。这归因于后两相的折射率相当相似。通过使用几乎与乙二醇折射率精确匹配的正十四烷作为替代油，可以制备几乎等折射率的乙二醇/正十四烷皮克林乳液。通过调节蠕虫状共聚物的浓度，可以系统地改变此类乳液的液滴直径和透明度。
