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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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两亲性/双疏性嵌段共聚物共混体系的自组装行为研究
DOI: 10.11777/j.issn1000-3304.2015.14339, PP. 475-483
Keywords: 嵌段共聚物,共混,自组装,聚集体,耗散粒子动力学
Abstract:
采用耗散粒子动力学方法,研究了两亲性嵌段共聚物和双疏性嵌段共聚物共混体系的自组装行为,探讨了双疏性嵌段共聚物的浓度以及双疏性嵌段共聚物的嵌段体积分数对聚集体结构的影响.结果表明,随着双疏性嵌段共聚物浓度的增加,聚集体发生自囊泡到棒状胶束再到同心圆多舱胶束的转变,且当浓度较高时,同心圆多舱胶束的同心圆层数量与浓度密切相关.当双疏性嵌段共聚物中的嵌段体积分数降低时,球形胶束由同心圆结构转变为非同心圆结构.此外,利用Minkowski泛函方法表征了多舱胶束的形成过程,发现这是一个先形成大尺度球形结构、再形成小尺度内核结构的分级组装过程.
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