Influence of Acrylate Content on the Properties of Ethylene Methyl Acrylate–Multi Walled Carbon Nanotube Composites

Basuli, Utpal; Chaki, T. K.; Sabharwal, S.; Chattopahdyay, Santanu

doi:10.1166/asl.2010.1091

Cited by 13 publications

(15 citation statements)

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“…All the composites were prepared via solution casting followed by melt‐mixing technique. This process yields superior dispersion of nanotubes in EMA matrix as compared to simple solution casting or simple melt‐mixing technique and it has been recently demonstrated in our previous reports 33, 34…”

Section: Methodsmentioning

confidence: 60%

“…A scheme has been proposed (Scheme a–c) to explain the above observations at experimental condition. These reflect large scale aggregation of MWNTs in E30N2.5 composite, but in E24N2.5 composites the aggregations are of much narrower range (assumptions are based on the morphological evidence published earlier) 33. Thus, the activation energy of flow decreases with MWNTs loading.…”

Section: Resultsmentioning

confidence: 81%

“…In our previous reports,33, 34 EMA/MWNTs nanocomposites were prepared by solution casting followed by melt mixing and the thermal, mechanical, dynamic mechanical, and morphological characteristics were investigated. The rheological properties of EMA/CNTs nanocomposites have not been previously reported.…”

Section: Introductionmentioning

confidence: 99%

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Rheological signatures of ethylene methyl acrylate‐multiwalled carbon nanotube nanocomposites

Basuli

Chaki

Chattopadhyay

2010

Polymers for Advanced Techs

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The rheological behavior of nanocomposites based on multiwalled carbon nanotube (MWNT) with three commercial grades of ethylene methyl acrylate (EMA) copolymers containing 9, 24, and 30 wt% methyl acrylate (MA) was investigated under dynamic and steady shear flow (in a capillary) conditions. Storage modulus (in dynamic shear) value increases especially at higher frequency levels due to increased polymer‐filler interactions. Both the unfilled and filled composites exhibit rheological behavior of non‐Newtonian fluids. In both steady shear and capillary flow, the nanocomposites register a slightly higher viscosity than neat EMAs, with dependence on the MWNTs content. All systems with various loading of MWNTs represent an increase in elastic response with increasing frequency. The die swell decreases with the MWNTs loading. Dynamic and steady shear rheological properties register a good correlation in regard to the viscous versus elastic response of such systems inline with the Cox–Merz concept. Increased MA content leads to inferior dispersion of MWNTs in EMA matrix. Morphological studies exhibit that MWNTs become more aligned along longitudinal direction after extrusion leading to improved dispersion. Copyright © 2010 John Wiley & Sons, Ltd.

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Section: Methodsmentioning

confidence: 60%

Section: Resultsmentioning

confidence: 81%

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Rheological signatures of ethylene methyl acrylate‐multiwalled carbon nanotube nanocomposites

Basuli

Chaki

Chattopadhyay

2010

Polymers for Advanced Techs

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“…Surface treatment of an inorganic nanosized particles is a useful way to reduce their surface energy, to increase their compatibility with polymer matrix and the dispersion homogeneity, and thus to improve the properties of the polymer/inorganic particles composites. [13][14][15][16][17][18] The enhancement of mechanical and thermal properties of polymer by inclusion of inorganic materials, especially in the form of nanocomposites, offered the possibility for these materials to substitute classical compounds based on metals or on traditional composites. 19 There are several methods to prepare inorganic/polymer composites, but in-situ polymerization may be one of the most effective routes.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Poly(methyl methacrylate–butyl acrylate)/Nano-Titanium Oxide Composite Particles

Guo¹,

Yu²,

Luo³

et al. 2011

j nanosci nanotechnol

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Poly(methyl methacrylate-butyl acrylate) [P(MMA-BA)]/nanosized titanium oxide (nano-TiO2) composite particles were prepared via insitu emulsion polymerization of MMA and BA in presence of nano-TiO2 particles. Before polymerization, the nano-TiO2 particles were modified by coupling agent. The structure and thermal properties of the obtained P(MMA-BA)/nano-TiO2 composite particles were characterized by Fourier transform infrared spectra (FTIR), wide-angle X-ray diffraction (WAXD) and thermogravimetric analysis (TGA). The results showed that there are covalent bond bindings between P(MMA-BA) and nano-TiO2 particles, meaning that P(MMA-BA) and nano-TiO2 particles were not simply blended or mixed up and that there is a strong interaction between P(MMA-BA) and nano-TiO2 particles. TGA and DSC measurements indicated an enhancement of thermal stability. Transmission electron microscopy (TEM) results showed that P(MMA-BA) enhanced the dispersibility of nano-TiO2 particles. The dispersion stabilization of modified nano-TiO2 particles in aqueous system was significantly improved due to the introduction of grafted polymer on the surface of nano-particles.

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“…The excellent electrical and thermal properties of nanotubes are particularly important in the preparation of nanocomposites. Some common methods for the preparation of CNT/polymer composites include in situ preparation [6], solution mix [7, 8], melt blending [9–11], and melt process after solution mixing [12, 13]. It has also been concluded that like other composites, the interfacial chemical bonding between CNTs and matrix plays a critical role in determining the properties and performance of a CNT composite [14].…”

Section: Introductionmentioning

confidence: 99%

Mechanical, thermal, and rheological behavior of ethylene methyl acrylate‐MWNT nanocomposites

Basuli

Chaki

Chattopadhyay

2011

Polymer Engineering & Sci

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Mechanical, thermal, and rheological properties of ethylene methyl acrylate (EMA) composites reinforced with multiwalled carbon nanotubes (MWNTs) have been reported here. Morphological analyses revealed that MWNTs are more uniformly dispersed in EMA upto 3.5 wt% MWNTs loading. Uniform dispersion of MWNTs in EMA matrix leads to decreased crystallinity and increased crystallite size. These are reflected in the mechanical and thermal properties of the composites. The storage moduli of the composites significantly increase by the incorporation of MWNTs, particularly at higher temperatures. The nanocomposites register a slightly higher viscosity than that of neat EMA depending on the contents of MWNTs. Storage modulus (in dynamic shear) increases especially at higher frequency levels due to increased polymer–filler interactions. Dynamic and steady shear rheological properties register a good correlation in regard to the viscous versus elastic response of the nanocomposites. The morphology correlates well with the dynamic rheological characteristics of these nanocomposites. POLYM. ENG. SCI., 2012. © 2011 Society of Plastics Engineers

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Influence of Acrylate Content on the Properties of Ethylene Methyl Acrylate–Multi Walled Carbon Nanotube Composites

Cited by 13 publications

References 0 publications

Rheological signatures of ethylene methyl acrylate‐multiwalled carbon nanotube nanocomposites

Rheological signatures of ethylene methyl acrylate‐multiwalled carbon nanotube nanocomposites

Synthesis and Characterization of Poly(methyl methacrylate–butyl acrylate)/Nano-Titanium Oxide Composite Particles

Mechanical, thermal, and rheological behavior of ethylene methyl acrylate‐MWNT nanocomposites

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