Synthesis and thermal analysis of methacrylate ester-based linear triblock copolymers-grafted multiwalled carbon nanotubes

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• 作者：Lan Liu ; Shijie Zhang ; Bo Shi ; Dongdong Mai…
• 关键词：Amphiphilic multiwalled carbon nanotube ; Linear triblock copolymer ; Thermogravimetry
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：119
• 期：3
• 页码：2029-2037
• 全文大小：691 KB
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Sciences
  Polymer Sciences
  Physical Chemistry
  Inorganic Chemistry
  Measurement Science and Instrumentation
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1572-8943

文摘

The two different linear triblock copolymers PtBMA100-b-PGMA19-b-PSt101 and PtBMA136-b-PHEMA23-b-PDMAEMA153 were grafted onto the multiwalled carbon nanotubes (MWCNTs) surface to prepare the amphiphilic MWCNTs PMAA-g-MWCNT-g-PSt and PtBMA-g-MWCNTs-g-PDMAEMA in this work. The results of the Raman spectroscopy and the Fourier transform infrared spectroscopy showed a good agreement, and they both illuminated that the MWCNTs had been successfully surface modified by the two terpolymers. The thermogravimetric analysis showed that the contents of the polymer in the MWCNTs composites were 39 and 62?% for PMAA-g-MWCNT-g-PSt and PtBMA-g-MWCNTs-g-PDMAEMA, respectively. The results of the thermokinetic analysis showed that the benzene ring in the PMAA-g-MWCNT-g-PSt makes the apparent activation energies in the thermal decomposition process which were higher than that of the PtBMA-g-MWCNTs-g-PDMAEMA after 238?°C.