IN SITU ETHYLENE COPOLYMERIZATION WITH AN OLEFIN-TYPE MONOMER FOR ONE-POT SYNTHESIS OF POLYETHYLENE TETHERED ON MULTI-WALLED CARBON NANOTUBES

• Published in: Chinese journal of polymer science Vol. 31; no. 10; pp. 1329 - 1333
• Main Authors: Tang, Ji-jun, Li, Shi-yun, Wang, Yan-hui, Tang, Tao
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2013
• Subjects: 1H-NMR; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Condensed Matter Physics; Industrial Chemistry/Chemical Engineering; Polymer Sciences; Rapid Communication; 一锅法合成; 共聚单体; 原位; 多壁碳纳米管; 烯烃单体; 纳米复合材料; 聚乙烯; Carbon nanotubes; Polyethylene; Copolymerization; Nanocomposite
• ISSN: 0256-7679; 1439-6203
• DOI: 10.1007/s10118-013-1338-0

A one-pot procedure for the synthesis of polyethylene tethered on multi-walled carbon nanotubes by in situ ethylene copolymerization with an olefin-type comonomer, tr-alkene functionalized multi-walled carbon nanotubes （MW- CH = CH2） is reported. The covalent linkage between polyethylene and multi-walled carbon nanotubes is demonstrated. The MWCNTs are chemically oxidized first by a strong oxidizing agent and then functionalized with chlorocarbonyl groups （MW--COC1） via reacting with thionyl chloride. The MW--CH=CH2 are obtained by esterification of co-undecylenyl alcohol with MW--COCI. The MW--CH = CH2 may serve as olefin-type comonomers to fiLrther synthesize core-shell structured copolymers with a multi-walled carbon nanotubes core grafted with side chains of polyethylene via rac-（en）（THInd）2ZrC12 copolymerization catalyst. The core-shell structured nanocomposites were characterized by means of 1H-NMR, SEM, FTIR and TGA. The results confirmed the formation of polyethylene chains growing from the surface of multi-walled carbon nanotubes.