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学科主题: 高分子化学 ; 氟化学
题名: Fluorescence studies oh hydrophobic associationsof fluorocarbon-modified poly(acrylic acid) solutions
其他题名: 萤光方法研究氟碳基团改性的聚磷酸溶液中疏水缔合作用
作者: Chen JY(陈俊燕) ; Jiang M(江明) ; Zhang YX(章云祥) ; Zhou H(周晖)
通讯作者: 江明 ; 章云祥
刊名: Macromolecules
发表日期: 1999-01-01
卷: 32, 期:15, 页:4861-4866
收录类别: SCI
部门归属: 复旦大学; 中国科学院上海有机化学研究所高分子材料研究室
英文摘要: Fluorocarbon-containing hydrophobically associating polymers have been synthesized by copolymerization of acrylic acid with a small amount of C=8 fluorocargon-containing methacrylate. The association behavior of the fluorocargon-modified poly(acrylic acid)(FA) over a broad pH range has been investigated by a fluorescent probe technique and viscosity measurements. The copolymer has the strongest intermolecular association and maximum viscosituy at the acidic condition of =pH 5.5. Both pyrene and fluorocarbon-substituted pyrene (P=yCOR=f)are usable to detect this strong association and its dependenceson both the fluorocarbon content and polymer concentration. Less acidic =pH causes progressivedissruptions of hydrophobic association, leading to a dramatic decrease in viscosity. At =pH>7, the stretched polymer chains reach a viscosity plateau much lower than the maximum viscosity but stillhigher than the viscosity of the poly(acrylic acid)homopolymer. This indicates that relatively weak associationsare present. PyCOR=f, due to its high affinity to the fluorocarbon domains, is effective in monitoring the formation of this kind of weak association while pyrene fails to dso.
语种: 英语
相关网址: 查看原文
内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/24477
Appears in Collections:高分子材料研究室_期刊论文

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Recommended Citation:
Chen JY,Jiang M,Zhang YX,et al. Fluorescence studies oh hydrophobic associationsof fluorocarbon-modified poly(acrylic acid) solutions[J]. Macromolecules,1999,32(15):4861-4866.
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