6 Result(s)
within
Charles C. Han
Materials Science
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Article
X-ray Reflectivity Study of Gold Nanoparticles in a Polymer Matrix
We have examined the structural evolution of a thin gold layer sandwiched between two polymer films using specular X-ray reflectivity. We used a depth-profiling model consisting of three independent layers, up...
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Article
Rheology and flow-birefringence from viscoelastic polymer-clay solutions
The shear orientation of viscoelastic clay-polymer solutions was investigated by means of rheology and flow birefringence (Δn). The polymer chains are in dynamic adsorption/desorption equilibrium with the cla...
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Article
Polymer-Clay Nanocomposite Materials: Solution and Bulk Properties
The influence of shear on viscoelastic polymer-clay solutions was investigated by means of small-angle neutron scattering (SANS) under shear. SANS measured the shearinduced orientation of polymer and platelets...
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Article
Silica Nano-particle Filled Poly(ethylene-ran-hexene)/xylene Gels
The effect of silica nano-particle filler on poly(ethylene-co-hexene)/xylene gels has been investigated using mainly small angle neutron scattering and rheological measurements. Both non-filled and filled poly...
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Article
Microstructure and Isotopic Labeling Effects on the Miscibility of Polybutadiene Blends Studied by the Small-Angle Neutron Scattering Technique
Deuterated polybutadiene and protonated polybutadiene (PBD/PBH) blends with various microstructures have been studied by the small-angle neutron scattering experiments. Correlation length, ξ, zero-wavenumber s...
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Article
Shear Induced Phase Behavior of Polymer Blends by Small Angle Neutron Scattering
The phase behavior of polymer blends and solutions can be changed dramatically by a flow field using a variety of flow geometries. Unlike simple binary fluids which require extremely high shear rates to produc...
