| INVESTIGATION ON THE RELATIONSHIP BETWEEN INTRINSIC VISCOSITY AND MOLECULAR WEIGHT OF POLY (VINYL CHLORIDE-DIETHYL MALEATE) |
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| 引用本文： | 郑昌仁,潘洪庆,林声和,钱均,段勤. INVESTIGATION ON THE RELATIONSHIP BETWEEN INTRINSIC VISCOSITY AND MOLECULAR WEIGHT OF POLY (VINYL CHLORIDE-DIETHYL MALEATE)[J]. 高分子科学, 1987, 0(2): 169-173 |
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| 作者姓名： | 郑昌仁 潘洪庆 林声和 钱均 段勤 |
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| 作者单位： | Department of Chemical Engineering Nanjing Chemical Engineering Institute，Department of Chemical Engineering Nanjing Chemical Engineering Institute，Department of Chemical Engineering Nanjing Chemical Engineering Institute，Department of Chemical Engineering Nanjing Chemical Engineering Institute，Department of Chemical Engineering Nanjing Chemical Engineering Institute |
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| 摘 要： | 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~(-3)M~(0.87) (ml/g, at 25℃, in cyclohcxanone)For the copolymer solution in THF, the second virial coefficient A_2 decreases as the molecular weight increases. The relationship isA_2=2 slope ((?)_n RT)~(-1/2).
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| 收稿时间： | 1984-07-08 |
INVESTIGATION ON THE RELATIONSHIP BETWEEN INTRINSIC VISCOSITY AND MOLECULAR WEIGHT OF POLY (VINYL CHLORIDE-DIETHYL MALEATE) |
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| 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, 0(2): 169-173 |
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| Authors: | ZHENG Changren PAN Hongqing LIN Shenghe QIAN Jun DUAN Qin |
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| Affiliation: | Department of Chemical Engineering Nanjing Chemical Engineering Institute; Department of Chemical Engineering Nanjing Chemical Engineering Institute |
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| Abstract: | 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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| Keywords: | Intrinsic viscosity Molecular Weight Poly(vinyl chloride-diethyl maleate) Chloro-Maleate Resin Osmotic pressure Mark-Houwink parameter. |
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