Gaines, Michelle K. and Smith, Steven D. and Samseth, Jon and Khan, Saad A. and Spontak, Richard J. (2010) Nanoparticle Network Formation in Nanostructured and Disordered Block Copolymer Matrices. Nanoscale Research Letters, 5 (10). pp. 1712-1718.
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Incorporation of nanoparticles composed of surface-functionalized fumed silica (FS) or native colloidal silica (CS) into a nanostructured block copolymer yields hybrid nanocomposites whose mechanical properties can be tuned by nanoparticle concentration and surface chemistry. In this work, dynamic rheology is used to probe the frequency and thermal responses of nanocomposites composed of a symmetric poly(styrene-b-methyl methacrylate) (SM) diblock copolymer and varying in nanoparticle concentration and surface functionality. At sufficiently high loading levels, FS nanoparticle aggregates establish a load-bearing colloidal network within the copolymer matrix. Transmission electron microscopy images reveal the morphological characteristics of the nanocomposites under these conditions.
|Subjects:||Material Science > Nanofabrication processes and tools|
|Deposited On:||31 Dec 2010 02:31|
|Last Modified:||31 Dec 2010 02:31|
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