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《Journal of Functional Polymers》 1988-01
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The Solution Properties of Poly(phenylene ether sulphone)in DMF (Ⅰ)

He Manjun, Feng Yi, Wang Wei (East China Univ. of Chemical Technology, Shanghai)  
By Viscometry and small angle laser light scattering, the parameters of chainflexibility and MHS equation at 25℃ of poly (phenylene ether sulphone) in dimethyformamide has been measured. It is (r_0~2/M)~1/2= 0.0864nm, C_∞ = 2.5, [η]=0.0499 M~(0.63). The molecular weight dependence of second virial coeffecient is A_2= 0.0375M~(-0.36). The Huggins parameter X_1 is 0.430. The composition of θ solvent of PPES was also determined. It is DMF/C_2H_5OH = 81.5/18.5 (in volume).
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