端羟基超支化聚酯接枝碳纳米管的合成与表征  

Synthesis and characterization of hydroxyl-terminated hyperbranched polyester grafted carbon nanotubes

作　　者：谭富增 陆绍荣[1] 曾岑[1] 祁博[1] 袁正凯[1] 

机构地区：[1]桂林理工大学材料科学与工程学院,桂林541004

出　　处：《化工新型材料》2015年第3期123-125,共3页New Chemical Materials

基　　金：国家自然科学基金项目(51163004;5146007);广西自然科学基金项目(2013GXNSFAA019308;2014GXNSFDA118006)

摘　　要：以乙二醇和2,2-二羟甲基丙酸为原料,通过缩聚反应制备了一种水溶性端羟基超支化聚酯(HBPE);并通过酰氯化法制备了端羟基超支化聚酯接枝碳纳米管(HBPE-g-MWCNTs);采用红外光谱(FT-IR)、凝胶渗透色谱(GPC)、广角X射线衍射(WAXD)、场发射扫描电镜(FESEM)、透射电镜(TEM)和热重分析(TGA)对合成产物进行表征。结果表明:所制得的端羟基超支化聚酯相对分子质量分布较窄,并且端羟基超支化聚酯是以共价键的方式连接到碳纳米管表面。经HBPE改性后的碳纳米在有机溶剂中的溶解性能得到明显改善,但结晶性能降低。A water-soluble hydroxyl-terminated hyperbranched polyester（HBPE）was synthesized from glycol and 2,2- bis （hydroxymethyl）propionic acid by polycondensation. Hydroxyl-terminated hyperbranched polyester grafted carbon nanotubes （HBPE-g-MWCNTs）were prepared by esterification. HBPE-g-MWCNTs was characterized by fourier transform infrared spectroscopy（FT-IR）,gel permeation chromatography（GPC）, wide angle X-ray diffraction（WAXD）, field emission scanning electron microscopy（FESEM）,transmission electron microscopy （TEM）and thermogravimetric analysis（TGA）. The results showed that hydroxyl-terminated hyperbranched polyester showed narrow molecular weight distribution, and the polyester took the form of covalent bond to connect to the surface of carbon nanotubes. The dispersion of MWCNTs in solvent was better than that of MWCNTs before modification,but the crystallization performance degraded.

关 键 词：端羟基超支化聚酯 碳纳米管 接枝 表征 

分 类 号：TQ316.343[化学工程—高聚物工业]