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首页> 外文期刊>RSC Advances >Self-assembled micelles based on branched poly(styrene-alt-maleic anhydride) as particulate emulsifiers
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Self-assembled micelles based on branched poly(styrene-alt-maleic anhydride) as particulate emulsifiers

机译：基于支化聚苯乙烯-马来酸酐的自组装胶束作为颗粒乳化剂

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摘要

Branched copolymer self-assembled micelles, based on amphiphilic branched poly(styrene-alt-maleic anhydride) (BPSMA) synthesized by a one-pot method, are prepared and employed as particulate emulsifiers to stabilize the white oil-in-water Pickering emulsions. The influences of micelle concentration, branching degree, salinity, and oil type on the emulsifying performance of self-assembled micelles are comprehensively investigated, and the distinction between BPSMA micelles and linear poly(styrene-alt-maleic anhydride) (LPSMA) self-assembled micelles on the micellar structure and emulsifying performance is also studied. The results show that the branched structure of the copolymer plays an important role in emulsification. The emulsifying performance of BPSMA micelles is superior to that of LPSMA micelles, reflected in the emulsifying efficiency and the long-term stability of emulsions. It is attributed to the much better structural stability of BPSMA micelles compared to LPSMA micelles, which is probably due to the postponing of hydrolyzing of maleic anhydride and ionization of carboxyl to some extent caused by the introduction of the branched structure in copolymers. It is also worth noting that, salinity has a great effect on the emulsifying performance of LPSMA micelles, but little impact on that of BPSMA micelles. Additionally, BPSMA micelles can also well stabilize the oil-in-water emulsions with some other types of natural oils. Thus the findings are not only of theoretical interest but also of great practical application in the cosmetics area.
机译：基于一锅法合成的两亲性支链聚（苯乙烯-马来酸酐）（BPSMA），制备了支链共聚物自组装胶束，并将其用作颗粒乳化剂以稳定白色水包油Pickering乳液。全面研究了胶束浓度，支化度，盐度和油型对自组装胶束乳化性能的影响，并区分了BPSMA胶束与线性自组装聚苯乙烯-alt-马来酸酐（LPSMA）的区别。还研究了胶束对胶束结构和乳化性能的影响。结果表明，共聚物的支链结构在乳化中起重要作用。 BPSMA胶束的乳化性能优于LPSMA胶束，这体现在乳液的乳化效率和长期稳定性上。这归因于BPSMA胶束与LPSMA胶束相比具有更好的结构稳定性，这可能是由于在共聚物中引入支链结构导致马来酸酐水解的延迟和羧基的电离。还值得注意的是，盐度对LPSMA胶束的乳化性能影响很大，而对BPSMA胶束的乳化性能影响很小。此外，BPSMA胶束还可以与某些其他类型的天然油很好地稳定水包油乳液。因此，这些发现不仅具有理论意义，而且在化妆品领域具有很大的实际应用价值。

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