Synthesis of anionic polymer–silica hybrids by controlling pH in an aqueous solution
Synthesis of anionic polymer–silica hybrids by controlling pH in an aqueous solution
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DOI：
10.1039/b411448e
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发表时间：
2005-12
影响因子：
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通讯作者：
Tomoki Ogoshi;Y. Chujo
中科院分区：
文献类型：
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作者：
Tomoki Ogoshi;Y. Chujo
通过在水溶液中控制pH值，可以很容易地合成光学透明的有机-无机聚合物杂化物，如聚丙烯酸（PAA）和聚苯乙烯磺酸（PSSA）等阴离子聚合物。众所周知，阴离子聚合物的构象取决于水溶液中的pH值。因此，认为在聚合物杂化制备过程中，有机聚合物链间的静电斥力会阻碍有机聚合物的聚集。采用扫描电镜（SEM）、拨接式原子力显微镜（AFM）和氮吸附孔隙率法研究了阴离子聚合物-二氧化硅杂合体的混相性。采用热重分析（TGA）和差热分析（DSC）对阴离子聚合物-二氧化硅杂化物的热性能进行了表征。研究了阴离子聚合物杂化聚合物的吸湿性能。
Optically transparent organic–inorganic polymer hybrids with anionic polymers such as poly(acrylic acid) (PAA) and poly(styrene sulfonic acid) (PSSA) could be easily synthesized by controlling pH in an aqueous solution. It is well known that the conformation of the anionic polymer depends on pH in an aqueous solution. Therefore, it is thought that the electrostatic repulsion between organic polymer chains should deter the aggregation of the organic polymer during the preparation of the polymer hybrid. The miscibility of anionic polymer–silica hybrids was examined by SEM, tapping-mode AFM and nitrogen adsorption porosimetry studies. The thermal properties of anionic polymer–silica hybrids were checked by TGA and DSC. The hygroscopicity of polymer hybrids with anionic polymers was also investigated.