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Influence of Nanogels on Mechanical, Dynamic Mechanical, and Thermal Properties of Elastomers

Mitra, Suman and Chattopadhyay, Santanu and Bhowmick, Anil K. (2009) Influence of Nanogels on Mechanical, Dynamic Mechanical, and Thermal Properties of Elastomers. Nanoscale Research Letters, 4 (5). pp. 420-430.

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Official URL: http://www.springerlink.com/content/x3118837591l17...

Abstract

Use of sulfur crosslinked nanogels to improve various properties of virgin elastomers was investigated for the first time. Natural rubber (NR) and styrene butadiene rubber (SBR) nanogels were prepared by prevulcanization of the respective rubber lattices. These nanogels were characterized by dynamic light scattering, atomic force microscopy (AFM), solvent swelling, mechanical, and dynamic mechanical property measurements. Intermixing of gel and matrix at various ratios was carried out. Addition of NR gels greatly improved the green strength of SBR, whereas presence of SBR nanogels induced greater thermal stability in NR. For example, addition of 16Â phr of NR gel increased the maximum tensile stress value of neat SBR by more than 48%. Noticeable increase in glass transition temperature of the gel filled systems was also observed. Morphology of these gel filled elastomers was studied by a combination of energy dispersive X-ray mapping, transmission electron microscopy, and AFM techniques. Particulate filler composite reinforcement models were used to understand the reinforcement mechanism of these nanogels.

Item Type:Article
Uncontrolled Keywords:Nanogels Elastomers Gels Mechanical properties Thermal properties
Subjects:Material Science > Functional and hybrid materials
Material Science > Soft materials
Physical Science > Nanophysics
ID Code:4330
Deposited By:Lesley Tobin
Deposited On:24 Mar 2009 11:44
Last Modified:24 Mar 2009 11:44

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