用红外(FT-IR)谱、X 射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)和差示扫描量热仪(DSC),研究了多壁碳纳米管(MWCNT)分别在强酸和偶氮二异丁腈(AIBN)+过氧化二苯甲酰物(BPO)中的表面修饰过程,并将其与聚(3-羟基丁酸-co-4-羟基丁酸酯)/碳纳米管复合,制备了微孔发泡薄膜,孔径最大50μm,最小10μm。结果表明,在相同溶剂条件下,偶氮二异丁腈+过氧化二苯甲酰可以成功地实现碳纳米管的表面修饰,修饰后的碳管浓度为1%(质量分数)与聚合物较好相容,当其比例为1∶2、1∶1时分别获得“莲蓬型”和“蜂窝型”微孔发泡结构薄膜,并具有较好的导电性。
The chemical functionalization process of carbon nanotubes(MWCNT)by hydrothermal treatments was investigated systemati-cally under various reaction conditions,including different reagents,treatment time, and temperature.The treated samples were char-acterized by the FT-IR,XPS and TGA spectroscopy,SEM and TEM structure.The results revealed that the hydrothermal technology was an effective method for the function-alization of MWCNTs and the control of the resulting chemical groups.In the same solvent conditions,azobi-sisobutyronitrile and benzoylperoxide can successfully realize the surface modification of carbon nanotubes, modified carbon nanotubes at concentration 10wt% and a microcellular foaming P(3HB-co-4HB)compositemi-crocellular foaming film films,at the ratio of 1∶2,1∶1 were obtained the"Shower-type"and"Honeycomb"microporous foaming structure of thin film,respectively,and had good electrical conductivity.
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