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Study of Relationship between Morphology and Mechanical Properties of SiO2-Polyacrylate Hybrid Nanocomposite

Published online by Cambridge University Press:  01 February 2011

Yi-Hsiao Kao ,
Wei-Fang Su  and
K. C. Lin
Yi-Hsiao Kao
Affiliation:
Institute of Materials Science and Engineering, National Taiwan University, Taipei, Taiwan
Wei-Fang Su
Affiliation:
Institute of Materials Science and Engineering, National Taiwan University, Taipei, Taiwan Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan
K. C. Lin
Affiliation:
Department of Physics, FuJen Catholic University, Taipei, Taiwan
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Abstract

The atomic force microscopic technique is utilized to study the spatial distribution of silica nanoparticles embedded in poly(tetraethylene glycol diacrylate) matrix. The cast samples of these hybrid materials show distinct mechanical property change as the weight ratio (SiO2/polyacrylate) reaches 40%. The morphological observation from spin-coated films on silicon substrates shows pronounced nanoparticle network formation correlated to the elasticity transition. The percolating particles reduce the local strain field, i.e. inhibit the deformation of the stratum, and cause the dramatic increase in the Young's modulus. Our experimental result is consistent with recent theoretical prediction [1].

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 847: Symposium EE – Organic/Inorganic Hybrid Materials , 2004 , EE13.2
Copyright
Copyright © Materials Research Society 2005

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References

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