Citation: ZHENG Changren, PAN Hongqing, LIN Shenghe, QIAN Jun, DUAN Qin. INVESTIGATION ON THE RELATIONSHIP BETWEEN INTRINSIC VISCOSITY AND MOLECULAR WEIGHT OF POLY (VINYL CHLORIDE-DIETHYL MALEATE)[J]. Chinese Journal of Polymer Science, ;1987, 5(2): 169-173. shu

INVESTIGATION ON THE RELATIONSHIP BETWEEN INTRINSIC VISCOSITY AND MOLECULAR WEIGHT OF POLY (VINYL CHLORIDE-DIETHYL MALEATE)

Received Date: 8 July 1984

A poly (vinyichloride-diethyl maleate) copolymer has been fractionated by repeated precipitation method. All fractions and the unfractionated sample have been characterized by viscometry, dynamic osmometry, Zimm static osmometry, light scattering and gel permeation chromatography. After correction for polydispersity, a [η]～M relationship for monodisperse polymer solutions has been obtained: [η]=1.99×10-3M0.87 (ml/g, at 25℃, in cyclohcxanone) For the copolymer solution in THF, the second virial coefficient A2 decreases as the molecular weight increases.The relationship is A2=2 slope (MnRT)-1/2.
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