ZHENG Chang-ren, PAN Hong-qing, LIN Sheng-he, QIAN Jun, DUAN Qin. STUDY OF THE INTRINSIC VISCOSITY MOLECULAR WEIGHT RELATIONSHIP FOR POLY (VINYL CHLORIDE DIETHYL MALEATE)[J]. Acta Polymerica Sinica, 1985,(5):388-392.
ZHENG Chang-ren, PAN Hong-qing, LIN Sheng-he, QIAN Jun, DUAN Qin. STUDY OF THE INTRINSIC VISCOSITY MOLECULAR WEIGHT RELATIONSHIP FOR POLY (VINYL CHLORIDE DIETHYL MALEATE)[J]. Acta Polymerica Sinica, 1985,(5):388-392.DOI:
A poly (vinyl chloride 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 monodis-persed [η] -M relationship has been obtaind:[η] = 1.99 × 10-3M0.87 (ml/g
at 25℃
in cyclohexanone)For the copolymer solution in THF
the second virial coefficient a decreases as the molecular weight increases. The relationship is.