Influence of non-covalent functionalization of carbon nanotubes on the rheological behavior of natural rubber latex nanocomposites

被引：65

作者：

Ponnamma, Deepalekshmi ^{[1
,2
]}

Sung, Sang Hoon ^{[2
]}

Hong, Joung Sook ^{[3
]}

Ahn, Kyung Hyun ^{[2
]}

Varughese, K. T. ^{[5
]}

Thomas, Sabu ^{[1
,4
]}

机构：

[1] Mahatma Gandhi Univ, Sch Chem Sci, Kottayam 686560, Kerala, India

[2] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151744, South Korea

[3] Soongsil Univ, Dept Chem Engn, Seoul 156743, South Korea

[4] Mahatma Gandhi Univ, Ctr Nanosci & Nanotechnol, Kottayam 686560, Kerala, India

[5] Cent Power Res Inst, Dielect Mat Div, Polymer Lab, Bangalore 560080, Karnataka, India

来源：

EUROPEAN POLYMER JOURNAL | 2014年 / 53卷

关键词：

Elastomer; Surfactants; Dispersion; Viscoelasticity; Payne effect; STYRENE-BUTADIENE RUBBER; MECHANICAL-PROPERTIES; CHEMICAL FUNCTIONALIZATION; FILLER NETWORKING; DISPERSION; REINFORCEMENT; ADSORPTION; BLACK; SURFACTANTS; COMPOSITES;

D O I：

10.1016/j.eurpolymj.2014.01.025

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

This paper aims at correlating the dispersion of multi walled carbon nanotubes (MWCNT) in natural rubber latex (NRL) medium with the theological properties of nanocomposites. For this, MWCNTs were first treated with surfactants of different charges - anionic sodium dodecyl sulphate (SDS), cationic cetyl trimethyl ammonium bromide (CTAB) and non-ionic Tween 20 (TW) - prior to their latex dispersion by solution mixing. Simple techniques like UV visible spectroscopy and sedimentation index analysis are used to explore the better dispersion of surfactant/MWCNTs in aqueous medium, where the surfactants reduce the agglomeration and entanglement of the nanotubes and facilitate strong filler-polymer interfacial adhesion. Rheology of the NRL-MWCNT suspensions is applied to derive the CNT-latex interfacial interactions in a quantitative way. For this Maier-Goritz theoretical modeling is applied on the observed 'Payne effect'. The effect of concentration of fillers, mixing time and temperature on the viscoelasticity of composites were also investigated. Contact angle measurements, transmission electron microscopy and Raman spectroscopy have been employed to substantiate the enhanced compatibility of surfactants wrapped MWCNTs with NRL where a promising dispersion and interfacial adhesion were achieved. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：147 / 159

页数：13

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