writer：Baolong Wang, Zhongkai Wang, Feng Jiang, Huagao Fang and Zhigang Wang*
keywords：碳纳米管，接枝，聚异戊二烯
source：期刊
specific source：RSC Adv., 2014, 4, 26468–26475
Issue time：2014年
Regeneration of activators by electron transfer for atom transfer radical polymerization (ARGET ATRP) was performed to synthesize hybrid materials with multi-walled carbon nanotubes (MWCNTs) grafted by in situ polymerized isoprene (PI, analogue of natural rubber). A series of MWCNT-graft-polyisoprene (MWCNT-g-PI) was prepared via this robust grafting strategy, and the successful grafting was confirmed by FT-IR, 1H NMR and TGA measurements. TGA curves show that MWCNT-g-PI samples have sufficient thermal stability. The increase in glass transition temperature for MWCNT-g-PI samples as compared with neat PI was characterized by DSC. TEM was used to observe the morphologies of MWCNT-g-PI. MWCNT-g-PI samples show much better dispersibility in various organic solvents than pristine MWCNTs. Water contact angle measurement indicates that the hydrophobicity of MWCNT-g-PI samples decreases with increasing chain length of the grafted PI.