Polyelectrolyte-grafted carbon nanotubes: synthesis,reversible phase-transition behavior, and tribological properties as lubricant additives

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	Polyelectrolyte-grafted carbon nanotubes: synthesis,reversible phase-transition behavior, and tribological properties as lubricant additives
	Liu WM(刘维民); Xia YQ(夏延秋); Pei XW(裴小维)
刊名	Journal of Polymer Science: Part A:Polymer Chemistry
	2008
卷号	46 页码:7225-7237
关键词	atom transfer radical polymerization (ATRP) carbon nanotube ionic liquids lubricant additives phase-transition tribological
ISSN号	0887-624X
通讯作者	郝京诚
中文摘要	A novel polyelectrolyte-grafted multiwalled carbon nanotubes (MWCNTs-g-PILs) which possesses a hard backbone of MWCNTs and a soft shell of brush-like poly (ionic liquids) (PILs) has been synthesized via the surface atom transfer radical polymerization (ATRP). Chemical structure and the grafted PILs quantities of MWCNTs-g-PILs were determined by FTIR, TGA, and XPS. TEM and FE-SEM observations indicate that the nanotubes were coated with a PILs layer, exhibiting core-shell nanostructures with the PILs chains as the brush-like or hairy shell and the MWCNTs as the hard backbone. Furthermore, the effect of counter-anions on the solubility of MWCNTs-g-PILs was investigated. The results indicate that relative solubility of MWCNTs-g-PILs in various solvents could be switched by anion exchange. This tunable solubility results in the formation of the cycle of reversible phase-transition. Tribological property of MWCNTs-g-PILs as additives in base lubricant 1-methyl-3-butylimidaaolium hexafluorophosphate (LP104) was evaluated using an Optimol SRV oscillating friction and wear tester, confirming that MWCNTs-g-PILs are the excellent antiwear and friction-reducing additives, which can amend the tribological properties of base lubricant significantly. This is attributed to the good dispersibility and core-shell structure of MWCNTs-g-PILs. These results reported in this work may open primarily toward constructing a bridge among carbon nanotues (CNTs), ILs, and lubricant additives and secondarily to prove that CNTs (modified CNTs) as lubricant additives are promising candidates.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the NSFC (Grant Nos. 20625307;50721062)
语种	英语
公开日期	2013-05-24
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/2991]
专题	兰州化学物理研究所_固体润滑国家重点实验室
推荐引用方式 GB/T 7714	Liu WM,Xia YQ,Pei XW. Polyelectrolyte-grafted carbon nanotubes: synthesis,reversible phase-transition behavior, and tribological properties as lubricant additives[J]. Journal of Polymer Science: Part A:Polymer Chemistry,2008,46:7225-7237.
APA	刘维民,夏延秋,&裴小维.(2008).Polyelectrolyte-grafted carbon nanotubes: synthesis,reversible phase-transition behavior, and tribological properties as lubricant additives.Journal of Polymer Science: Part A:Polymer Chemistry,46,7225-7237.
MLA	刘维民,et al."Polyelectrolyte-grafted carbon nanotubes: synthesis,reversible phase-transition behavior, and tribological properties as lubricant additives".Journal of Polymer Science: Part A:Polymer Chemistry 46(2008):7225-7237.