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提出了一种用宽分布高聚物试样订定MHS方程参数的方法。作者用十四个具有不同分布宽度,分子量范围的聚苯乙烯试样,订定了聚苯乙烯-四氢呋喃体系、25℃时的MHS方程:〔η〕=1.26×10~(-2)M_m~(0.0701)。该方程与用窄分布聚苯乙烯标样所订定的MHS方程〔η〕=1.33×10~(-2)M_w~(0.0705)非常一致,验证了此法的可靠性。
A method for setting parameters of MHS equation using wide-distributed polymer samples was proposed. Fourteen polystyrene samples with different widths and molecular weights were assigned to the polystyrene-tetrahydrofuran system. The MHS equation at 25 ° C: [η] = 1.26 × 10 ~ (-2) M_m ~ (0.0701). The equation is in good agreement with the MHS equation [η] = 1.33 × 10 -2 M_w ~ (0.0705) as defined by the narrow polystyrene standards, which verifies the reliability of this method.