Facile Fabrication of Polyolefin/Carbon Nanotube Composites via in Situ Friedel鈥揅rafts Polyalkylation: Structure and Properties

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• 作者：Ping鈥檃n Song ; Lina Liu ; Guobo Huang ; Shenyuan Fu ; Youming Yu ; Qipeng Guo
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：October 9, 2013
• 年：2013
• 卷：52
• 期：40
• 页码：14384-14395
• 全文大小：690K
• 年卷期：v.52,no.40(October 9, 2013)
• ISSN：1520-5045

文摘

Despite major advances in addressing the dispersion of carbon nanotubes (CNTs) in polymers and their interfacial interactions, exploring a facile approach for massively creating them is still fascinating. We interestingly find that the CNT dispersion is considerably improved in polypropylene (PP), and 19.1 wt % of PP chains were in situ chemically grafted onto CNT surfaces only using a trace of AlCl₃ via a one-step melt-blending. Compared with the PP/CNT composite, adding 0.2 wt % of AlCl₃ enables an increase in tensile strength and Young鈥檚 modulus of 30% and 25%, respectively. Moreover, the elongation at break is almost maintained, while adding CNTs alone causes significant decreases. Additionally, 0.2 wt % AlCl₃ makes the thermal degradation temperature further improved. These remarkable improvements in properties are mainly attributed to better dispersion of CNTs and enhanced interfacial compatibility. This work opens up an innovative approach for scalable preparation of polyolefin/CNT composites applying to industrial production.