Abstract
The structural characteristics of the blue-colored poly (vinyl alcohol) (PVA) -iodine complex (PIC) in aqueous solution were studied by means of small-angle neutron scattering with contrast variation method, using various D2O/H2O. The concentrated PIC solutions were prepared by using PVA with the degree of polymerization of 15, containing excess KI and the color inducing agent CuCl2. The results from the computer simulation for the measured Stuhrmann plot with theoretical scattering functions suggested that the PIC forms a cylindrical aggregate compposed of the complexed units of more than 4 (insert space) linearchains of PVA surrounding triiodide dimer.
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