Measurements of single chain form factors by small-angle neutron scattering from polystyrene blends containing high concentrations of labelled molecules |
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| Authors: | GD Wignall RW Hendricks WC Koehler JS Lin MP Wai EL Thomas RS Stein |
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| Affiliation: | Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA;Polymer Research Institute, University of Massachusetts, Amherts, Massachusetts 01002, USA |
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| Abstract: | A series of small angle neutron scattering measurements on blends of normal polystyrene (PSH) and labelled (deuterated) polystyrene (PSD) have been made with concentrations of PSD from 5 to 50 mol %. It is shown that the single chain form factor of the polymer in bulk can be obtained from a single concentration measurement for any concentration of labelled molecules, providing the molecular weights of the parent and labelled molecules are the same and the molecular weight distributions are narrow. |
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