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本文用广角及准弹性光散射法测定了聚苯醚砜各级分在DMF中和在θ溶剂中25℃时的均才半径R_G,第二维利系数A_2,流体力学半经R_H,扩散系数D_O,扩散系数的浓度依赖性k_F以及这些参数与分子量M的关系。它们的结果如下R_G=0.031MO~(0.55) D_O(θ)=0.906×10~(-4)M~(0.5) D_0=1.445×10~(-4)M~(0.55)A_2=0.033M~(-0.35) k_D(θ)=0.5M~(0.34) k_D=2.3×10~(-6)M~(1.36)α_H=R_H/R_H(θ)=0.63M~(0.05)R_H(θ)=0.0299M~(0.5)R_H=0.0188M~(0.55) 作者讨论了静态与动态两种高分子尺寸之间的关系;三种溶胀因子α_η和、α_H、α_G之间的关系;以及摩擦系数的浓度系数k_F与流体力学体积V_H之间的关系。它们的结果满足下面各关系式: R_H/R_G=[π(v+1)(2v+1)/3]~(1/2)(2-v)(1-v)/2, α_η~3=α_(G)~2α_H, k_F=1.2A_2M+N_AV_H/M,K_F(θ)=N_AV_H/M
In this paper, the mean radius R_G, the second Weili coefficient A_2, the hydrodynamic half R_H and the diffusion coefficient of polyphenylene ether sulfone (DMF) in DMF and θ solvent at 25 ℃ were measured by wide-angle and quasi-elastic light scattering D_O, concentration dependence of diffusion coefficient k_F, and the relationship between these parameters and molecular weight M. Their results are as follows: R_G = 0.031MO ~ (0.55) D_O (θ) = 0.906 × 10 ~ (-4) M ~ (0.5) D_0 = 1.445 × 10 ~ (-4) M ~ (-0.35) k_D (θ) = 0.5M ~ (0.34) k_D = 2.3 × 10 -6 M ~ 1.36 α_H = R_H / R_H θ = 0.63M~0.05 R_H θ = 0.0299M ~ (0.5) R_H = 0.0188M ~ (0.55) The authors discuss the relationship between static and dynamic polymer size, the relationship between three swelling factors α_η and α_H, α_G, and the friction coefficient The relationship between the coefficient k_F and the hydrodynamic volume V_H. Their results satisfy the following relationships: R_H / R_G = [π (v + 1) (2v + 1) / 3] 1/2 (2-v) (1-v) = α_ (G) ~2α_H, k_F = 1.2A_2M + N_AV_H / M, K_F (θ) = N_AV_H / M