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Studies Conducted at University of Sheffield on Nanocomposites Recently Reported (Nanoparticle Brush Architecture Controls Polymer Diffusion in...

August 15, 2014



Studies Conducted at University of Sheffield on Nanocomposites Recently Reported (Nanoparticle Brush Architecture Controls Polymer Diffusion in Nanocomposites)

By a News Reporter-Staff News Editor at Science Letter -- Data detailed on Nanocomposites have been presented. According to news reporting from Sheffield, United Kingdom, by NewsRx journalists, research stated, "We show that polymer diffusion in polymer nanocomposites (PNCs) is controlled by the architecture of polymer brushes grafted to hard spherical nanoparticles (NPs). At high grafting density, diffusing chains are excluded from the polymer brush leading to greater confinement."

The news correspondents obtained a quote from the research from the University of Sheffield, "However, at lower grafting density, these chains penetrate the brush and diffusion is similar to the hard NP case, compared at the same NP loading. We calculate the effective interparticle spacing (IDeff) by modeling polymer penetration into the grafted brush using self-consistent field theory. When plotted against a confinement parameter (IDeff/2R(g), where R-g is the radius of gyration of the diffusing polymer), reduced diffusion coefficients (D/D-o) fall on a master curve independent of brush architecture."

According to the news reporters, the research concluded: "These findings show that brush architecture provides a new route toward controlling polymer dynamics and viscoelasticity of PNCs."

For more information on this research see: Nanoparticle Brush Architecture Controls Polymer Diffusion in Nanocomposites. Macromolecules, 2014;47(7):2404-2410. Macromolecules can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Macromolecules - www.pubs.acs.org/journal/mamobx)

Our news journalists report that additional information may be obtained by contacting J. Choi, University of Sheffield, Dept. of Phys & Astron, Sheffield S3 7RH, S Yorkshire, United Kingdom. Additional authors for this research include M.J.A. Hore, N. Clarke, K.I. Winey and R.J. Composto (see also Nanocomposites).

Keywords for this news article include: Europe, Sheffield, United Kingdom, Nanotechnology, Emerging Technologies

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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