Small angle neutron scattering measurements were performed on a ternary blend of deuterated polystyrene (PSD), poly(vinylmethyl ether) (PVME) and protonated polystyrene (PSH) for sample temperatures ranging from ambient to 160°C (close to the spinodal decomposition temperature). The extension of de Gennes' random phase approximation formula for the structure factor to three components was used to analyse the data. Two of the Flory-Huggins interaction parameters were obtained from the published literature (XPsD/Psn and ZPSD/PVME) and the third, ZPSn/VVME, was extracted from fits to the SANS data. Two different samples corresponding to the same PVME composition but different PSH/PSD fractions gave similar dependences: Zpsn/evM~/Vo = 10.3 x 10 -4- 0.422/T and Zpsn/eVuE/Vo = 10.6 X 10 -4 -- 0.436/T, where T is the absolute temperature. Plots of g versus 1/T show a uniform shift of around 20°C (downward in temperature) in going from the PSD/PVME to the PSH/PVME blends.
Посилання на статтю:
Small angle neutron scattering from deuterated polystyrene/poly (vinylmethyl ether)/protonated polystyrene ternary polymer blends / Boualem Hammouda, Robert M. Briber* and Barry J. Bauer* // Polymer. – 1992. – Vol 33. – P. 1785-1787.
Small angle neutron scattering from deuterated polystyrene/poly (vinylmethyl ether)/protonated polystyrene ternary polymer blends - Завантажити.