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首页> 外文期刊>Journal of Applied Polymer Science >Electrospinning of in situ and ex situ synthesized polyimide composites reinforced by titanate nanotubes
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Electrospinning of in situ and ex situ synthesized polyimide composites reinforced by titanate nanotubes

机译：钛酸纳米管和Ex原位合成聚酰亚胺复合材料的静电纺丝

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摘要

A colloidal dispersion of titanate nanotubes (TiNT) and polyamic acid (PAA) in dimethylformamide (DMF) was electrospun and chemically converted to polyimide (PI)-titanate nanotube (PI-TiNT) composite nanofibers of 500-1000 nm diameter. The dispersion of nanotubes in the polymer was addressed by two different approaches, namely an in situ method (when TiNT was coated with one of the monomers) and an ex situ one (when TiNT reacted directly with PAA). SEM images showed bead formation on samples from the in situ approach, while ex situ samples showed the absence of such features. Good distribution and some alignment of TiNT within the polymer fibers from in situ or ex situ approaches were observed by TEM imaging. Addition of titanate nanotubes into the polyimide significantly decreased the viscosity of polyamic acid solution and increased the glass transition temperature of the composite. (C) 2016 Wiley Periodicals, Inc.
机译：钛酸酯纳米管（色调）和聚酰胺酸（PAA）在二甲基甲酰胺（DMF）中的胶体分散体是Electurpul，并在500-1000nm直径的聚酰亚胺（PI-TINT）复合纳米纤维中化学转化为聚酰亚胺（PI）纳米管（PI-色谱）。 通过两种不同的方法解决了聚合物中纳米管的分散，即原位方法（当着色时用一粒单体涂覆时）和出原位一（当色调直接与PAA反应时）。 SEM图像显示出原位方法的样品上的珠子形成，而Ex原位样品显示出不存在这些特征。 通过TEM成像观察到良好的分布和聚合物纤维内的色调内的色调在原位方法中的一些比对。 向聚酰亚胺中添加钛酸盐纳米管显着降低了聚酰胺酸溶液的粘度并增加了复合材料的玻璃化转变温度。 （c）2016 Wiley期刊，Inc。

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