Synthesis of Water-soluble Poly(vinyl alcohol)-grafted Multi-walled Carbon Nanotubes

被引：6
|
作者：
Jeon, Hyun Jeong [1 ]
Youk, Ji Ho [1 ]
Yu, Woong-Ryeol [2 ,3 ]
机构：
[1] Inha Univ, Div Nanosyst, Dept Adv Fiber Engn, Inchon 402751, South Korea
[2] Seoul Natl Univ, Intelligent Textile Syst Res Ctr, Seoul 151742, South Korea
[3] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151742, South Korea
来源：
MACROMOLECULAR RESEARCH | 2010年 / 18卷 / 05期
关键词：
multi-walled carbon nanotubes; cobalt-mediated radical polymerization; graft; poly(vinyl acetate); poly (vinyl alcohol); MEDIATED RADICAL POLYMERIZATION; VINYL-ACETATE; BLOCK-COPOLYMERS; FUNCTIONALIZATION; POLYSTYRENE; POLYMERS;
D O I：
10.1007/s13233-010-0504-2
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A facile method for preparing waster-soluble poly(vinyl alcohol)-grafted multi-walled carbon nanotubes (PVA-grafted MWNTs) was developed. Well-defined poly(vinyl acetate) chains end-capped by a cobalt(II) acetylacetonate (Co(acac)(2)) complex [PVAc-Co(acac)(2)] were synthesized by the cobalt-mediated radical polymerization (CMRP) of vinyl acetate. PVAc macroradicals generated by the homolytic cleavage of the carbon-cobalt (C-Co) bonds of PVAc-Co(acac)(2) chains were then grafted directly to the MWNTs via radical addition reactions in dimethyl sulfoxide (DMSO) at 50 degrees C. The amount of the PVAc grafted onto the surface of the MWNTs decreased with increasing molecular weight of PVAc-Co(acac)(2). Hydrolysis of the grafted PVAc finally yielded PVA-grafted MWNTs, which showed good solubility in water. Surface functionalization of the MWNTs was confirmed by H-1 NMR spectroscopy, FTIR spectroscopy and TEM.
引用
收藏
页码：458 / 462
页数：5
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