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投稿时间：2010-06-14
投稿时间：2010-06-14
中文摘要: 通过分散聚合，在聚酰亚胺（PI）薄膜表面原位沉积聚苯胺（PANI）制备聚苯胺 聚酰亚胺 聚苯胺（PANI-PI-PANI）复合膜。考察了苯胺分散聚合中，不同空间稳定剂的稳定效果（不同分子量的大分子稳定剂PVP及小分子稳定剂CTAB、Tween-20），初步探讨了大分子稳定剂PVP-K90的稳定机理。实验表明，高分子量PVP-K90可稳定PANI良好成膜，且紫外和红外光谱分析证实PANI膜为掺杂态PANI，膜中不含有稳定剂PVP K90。低分子量的PVP-K30和两亲性小分子稳定剂不能良好地稳定PANI成膜，稳定作用较差。PVP K90的稳定作用不仅依据亲水 疏水相互作用和表面能的减少，还可能与高分子量PVP的长链分子结构及与水和苯胺的特殊相互作用有关，可用齐聚物沉淀成核机理解释。
Abstract:Polyaniline polyimide polyaniline (PANI-PI-PANI) composite films were in situ deposited on PI film matrix in dispersion polymerization. PVP K90, PVP-K30, CTAB and Tween 20 were used as steric stabilizer and the stable effect of them on the morphology of the composite films were studied. When PVP-K90 was used as steric stabilizer, high quality composite films could be prepared. The UV and IR spectra confirmed that the surface layers of composite films were composed of HCl doped PANI and the composite films did not contain PVP-K90. When PVP K30、 CTAB and Tween-20 were used respectively as steric stabilizer, the composite films were weak in morphology. It showed that the good stable effect of PVP-K90 was not only related to hydrophilic hydrophobic interaction and surface energy reduce, but also related to the maromolecular structure and the special interaction of PVP-K90，water and aniline, it could be explained by mechanism of oligomer deposited to nucleus.
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基金项目:国家自然科学基金资助项目(50390090)
引用本文：
李国伟,孙雪丽,温时宝,吴其晔.苯胺分散聚合中稳定剂PVP-K90的稳定机理[J].功能高分子学报,2010,23(4):380-384.
LI Guo-wei,SUN Xue-li,WEN Shi-bao,WU Qi-ye.Stabilizing Mechanism of PVP-K90 in Dispersion Polymerization of Aniline[J].Journal of Functional Polymers,2010,23(4):380-384.
李国伟,孙雪丽,温时宝,吴其晔.苯胺分散聚合中稳定剂PVP-K90的稳定机理[J].功能高分子学报,2010,23(4):380-384.
LI Guo-wei,SUN Xue-li,WEN Shi-bao,WU Qi-ye.Stabilizing Mechanism of PVP-K90 in Dispersion Polymerization of Aniline[J].Journal of Functional Polymers,2010,23(4):380-384.
