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高分子纳米管(PNT)是一类具有中空管状结构的高分子纳米材料,模板法是制备管状高分子纳米材料的有效方法.本研究以自组装金属有机纳米管(MONT)为模板,杈状多元胺和多元羧酸为前体分子,利用杈状多元胺与MONT表面的铜离子配位络合,在MONT表面上形成包覆层,再与同样具有杈状结构的多元羧酸活化酯进行交联反应后,去除掉内部的自组装模板,从而制得具有良好水分散性的PNT.利用扫描电子显微镜(SEM)、扫描透射电子显微镜(STEM)、差示扫描量热仪(DSC)、X射线衍射(XRD)和漫反射傅立叶变换红外光谱(DRIFTS)对PNT的表面形貌、组成和结构进行了表征.结果表明,当多元胺用量为MONT用量的0.4摩尔当量时,交联产物的成管率最高,达80%以上,纳米管的长度大多为500 nm~3μm、内径为60~100 nm、外径80~120 nm.
Polymer nanotubes (PNTs) are a kind of macromolecule nanomaterials with hollow tubular structure, and template method is an effective method to prepare tubular macromolecule nanomaterials.In this study, self-assembled metal-organic nanotubes (MONTs) The polyamine and the polycarboxylic acid are precursor molecules, which are coordinated with copper ions on the surface of the MONT by a bifunctional polyamine to form a coating on the surface of the MONT, which is then subjected to the polycarboxylic acid activated ester which also has a bifurcated structure After the cross-linking reaction, the internal self-assembly template was removed to obtain a PNT with good water dispersibility. The morphology of PNT was observed by scanning electron microscopy (SEM), transmission electron microscopy (SEM), differential scanning calorimeter The surface morphology, composition and structure of PNT were characterized by X-ray diffraction (XRD) and diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS). The results showed that when the amount of polyamine was 0.4 mol equivalents of MONT, The highest tube formation rate is over 80%. The length of nanotubes is mostly 500 nm ~ 3 μm, the inner diameter is 60 ~ 100 nm and the outer diameter is 80 ~ 120 nm.