Nanoparticle Network Formation in Nanostructured and Disordered Block Copolymer Matrices
| Autor: | Jon Samseth, Michelle K. Gaines, Saad A. Khan, Richard J. Spontak, Steven D. Smith |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Materials science
Block copolymer Colloidal silica Nanochemistry Nanoparticle Nanotechnology Methacrylate Colloidal network Colloid Materials Science(all) lcsh:TA401-492 Copolymer General Materials Science Fumed silica Nanostructured polymer Chemistry/Food Science general Nanocomposite Material Science Engineering General Materials Science general Silica Nano Perspectives Condensed Matter Physics Physics General Chemical engineering Molecular Medicine Nanoparticles lcsh:Materials of engineering and construction. Mechanics of materials |
| Zdroj: | Nanoscale Research Letters Nanoscale Research Letters, Vol 5, Iss 10, Pp 1712-1718 (2010) |
| ISSN: | 1931-7573 |
| DOI: | 10.1007/s11671-010-9775-y |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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