By a News Reporter-Staff News Editor at Science Letter -- Research findings on Macromolecule Research are discussed in a new report. According to news reporting from Columbia, South Carolina, by NewsRx journalists, research stated, "Solvent-free assemblies of hairy nanoparticles (NPs) are providing avenues to avoid issues of mixing, agglomeration, and limited inorganic content that plague nanocompositses based on polymer-nanoparticle blending. Here we demonstrate that the order within, and the elongational characteristics of, the neat HNP assembly (aHNP) evolve as the architecture of the polymeric corona in solution transitions from the concentrated (CPB) to semidilute (SDPB) polymer brush regimes (silica nanoparticle: radius r(0) = 8 nm with 120 kDa polystyrene grafts at sigma = 0.01-0.1 chains/nm(2))."
The news correspondents obtained a quote from the research from the University of South Carolina, "Specifically, local HNP packing adopts a nonisotropic local arrangement at intermediate graft densities where the transition from CPB-to-SDPB in solution is approximately r(0). In concert, the neat HNP assembly responds to viscoelastic elongational deformation in a manner analogous to semicrystalline elastomers. Domain orientation under load and subsequent buckling upon recovery lead to the appearance of two- and four-point small-angle X-ray patterns."
According to the news reporters, the research concluded: "The correlation between the corona architecture of the HNP and the physical characteristics of the solvent-free aHNP provides a framework akin to block-copolymers to tune mechanical, optical, and electrical properties of fibers and films via ordered mesoscale morphology."
For more information on this research see: Nonisotropic Self-Organization of Single-Component Hairy Nanoparticle Assemblies. ACS Macro Letters, 2013;2(8):670-676. ACS Macro Letters can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; ACS Macro Letters - www.pubs.acs.org/journal/amlccd)
Our news journalists report that additional information may be obtained by contacting H. Koerner, University of South Carolina, Dept. of Chem & Biochem, Columbia, SC 29201, United States. Additional authors for this research include L.F. Drummy, B. Benicewicz, Y. Li and R.A. Vaia (see also Macromolecule Research).
Keywords for this news article include: Columbia, United States, South Carolina, Macromolecule Research, North and Central America
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