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Mesoscopic study of polymeric micelles with multiple lower critical solution temperatures: micellar phase control by temperature effect
Chemical Physics Letters ( IF 2.8 ) Pub Date : 2018-07-11 , DOI: 10.1016/j.cplett.2018.07.021
María del Rosario Rodríguez-Hidalgo , César Soto-Figueroa , José Luis Ruiz Guzmán , Víctor Manuel Castaño Meneses , Luis Vicente

By means of the construction of thermoresponsive triblock poly(N-isopropylacrylamide)-b-poly(N-methacryloylalanine methyl ester)-b-poly(N-acryloyl-4-trans-hydroxy-L-proline methyl ester), P(NIPAM)-b-P(MA-Ala-OMe)-b-P(A-Hyp-OMe) in an aqueous environment it is shown by simulations of dissipative particle dynamics that due to the different LCSTs of the individual homopolymers, the structural conformations of the system are modified by consecutive thermal stimulus. First, free dispersed unimers chains are found at room temperature, then polymeric micelles with P(NIPAM)-core and P(MA-Ala-OMe)-b- P(A-Hyp-OMe) double corona at intermediate temperatures, micelles with P(NIPAM)-b-P(MA-Ala-OMe) core-shell and P(A-Hyp-OMe) corona at higher temperature and micellar phase segregation at higher temperatures via generation of a cloud-point.



中文翻译:

具有多个较低临界溶液温度的聚合物胶束的介观研究:通过温度效应控制胶束相

通过构建热响应性三嵌段聚(N-异丙基丙烯酰胺)-b-聚(N-甲基丙烯酰丙氨酸甲酯)-b-聚(N-丙烯酰基-4-反式-羟基-L-脯氨酸甲酯),P(NIPAM水性环境中的)-bP(MA-Ala-OMe)-bP(A-Hyp-OMe)通过耗散粒子动力学模拟表明,由于各个均聚物的LCST不同,因此系统的结构构型是由连续的热刺激修改。首先,在室温下发现自由分散的单体链,然后在中等温度下具有P(NIPAM)核和P(MA-Ala-OMe)-b-P(A-Hyp-OMe)双电晕的聚合物胶束, P(NIPAM)-bP(MA-Ala-OMe)核壳和P(A-Hyp-OMe)电晕在较高的温度下发生胶束相分离,在较高的温度下会通过浊点分离。

更新日期:2018-07-12
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