| 聚氯乙烯-马来酸二乙酯分子量与特性粘数关系的研究 |
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| 引用本文： | 郑昌仁,潘洪庆,林声和,钱均,段勤.聚氯乙烯-马来酸二乙酯分子量与特性粘数关系的研究[J].高分子学报,1985,0(5):388-392. |
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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： | 南京化工学院化学工程系 南京
(郑昌仁，潘洪庆，林声和，钱均)，南京化工学院化学工程系 南京(段勤) |
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| 摘 要： | <正> 氯乙烯-马来酸二乙酯共聚树脂(氯-马树脂)是一种聚氯乙烯改性树脂。其特点为:可以用廉价的氯化石蜡代替增塑剂DBP,而树脂仍具有好的使用性能。本工作是先将氯-马树脂样品进行童沉淀分级,取得分子量较均一的各个级场,然后用快速动态渗透压和静态渗透压法测走其数均分子量;用光散射法测定其重均分子量;用粘度法测
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| 收稿时间： | 1984-07-08 |
STUDY OF THE INTRINSIC VISCOSITY MOLECULAR WEIGHT RELATIONSHIP FOR POLY (VINYL CHLORIDE DIETHYL MALEATE) |
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| 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,1985,0(5):388-392. |
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| Authors: | ZHENG Chang-ren PAN Hong-qing LIN Sheng-he QIAN Jun DUAN Qin |
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| Institution: | Nanjing Institute of Chemical Technology; Nanjing |
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| Abstract: | 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 isA2 = 2 slope(Mn RT)-1/2. |
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