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OALib Journal期刊
ISSN: 2333-9721
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对称两嵌段共聚物/均聚物共混体系受限在球形纳米孔内的自组装行为
DOI: 10.3724/SP.J.1105.2011.11178, PP. 1355-1360
Keywords: 受限,模拟退火,两嵌段共聚物,混合体系,自组装
Abstract:
采用模拟退火方法系统研究了对称两嵌段共聚物AB/均聚物A或C混合体系受限在球形纳米孔内的自组装行为.结果表明,体系的自组装结构受均聚物含量、均聚物链长、受限尺度以及A-C间相互作用强度的影响.随着均聚物含量的变化,体系可形成多种自组装结构,包括类洋葱层、笼状、类拱顶状、螺旋状、堆叠圆盘和圆环、平层、及球状结构.当A-C单体间相互作用强度较弱时,均聚物链长越短,混合体系的相容性就越好;且随着均聚物链长的增加,相应的结构出现在较高均聚物含量值.当A-C单体间相互作用强度较强时,均聚物链长对相容性的影响消失.模拟结果与近期类似体系的实验结果有着较好的吻合.
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