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首页> 外文期刊>Journal of Applied Polymer Science >Ion aggregation in the polysiloxane ionomers bearing pendant quaternary ammonium groups
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Ion aggregation in the polysiloxane ionomers bearing pendant quaternary ammonium groups

机译：带有季铵根侧基的聚硅氧烷离聚物中的离子聚集

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摘要

Polysiloxane ionomers bearing pendant quaternary ammonium groups were synthesized through the Menshutkin reaction of poly(,gamma-chloropropylmethylsiloxane-co-dimethylsiloxane) with N,N-dimethylbenzylamine. Ion aggregation in the ionomers with different contents of the quaternary ammonium groups was investigated by torsion braid analysis, transmission electron microscopy, and rheological measurements. It was found that the incorporation of the quaternary ammonium groups did not make a significant effect on the glass transition temperature of the polysiloxane matrix. The glass transition of the cluster phase was found in the range of -20-40degreesC, depending on the concentration of the ion pair. The cluster phase was visualized under TEM when the concentration of the quaternary ammonium group exceeded a critical value. It was indicated by rheological data that the movement of polymer chains in the cluster phase of the polysiloxane ionomers was not restricted at the room temperature, which might be related to the weaker interaction between the bulky quaternary ammonium ion pairs. (C) 2002 John Wiley Sons, Inc. [References: 9]
机译：通过聚（γ-氯丙基甲基硅氧烷-共二甲基硅​​氧烷）与N，N-二甲基苄胺的Menshutkin反应合成了带有季铵根侧基的聚硅氧烷离聚物。通过扭辫分析，透射电子显微镜和流变学测量研究了具有不同含量季铵基团的离聚物中的离子聚集。已经发现，季铵基团的引入对聚硅氧烷基体的玻璃化转变温度没有显着影响。发现簇相的玻璃化转变在-20-40℃的范围内，这取决于离子对的浓度。当季铵基团的浓度超过临界值时，在TEM下可以看到团簇相。流变学数据表明，在室温下，聚合物链在聚硅氧烷离聚物的簇相中的运动不受限制，这可能与庞大的季铵离子对之间较弱的相互作用有关。 （C）2002 John Wiley Sons，Inc. [参考：9]

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