| 由GPC谱图及[η]订定偏氯乙烯共聚物的Mark-Houwink方程参数 |
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| 引用本文： | 李伯耿,林仁和,曹堃,于在璋. 由GPC谱图及[η]订定偏氯乙烯共聚物的Mark-Houwink方程参数[J]. 高分子学报, 1992, 0(1): 56-60 |
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| 作者姓名： | 李伯耿 林仁和 曹堃 于在璋 |
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| 作者单位： | 浙江大学化工系，浙江大学化工系，浙江大学化工系，浙江大学化工系 杭州，邮政编码:310027，杭州，邮政编码:310027，杭州，邮政编码:310027，杭州，邮政编码:310027 |
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| 摘 要： | 通过一组重量组成比为90/10的偏氯乙烯-丙烯酸甲酯(VDC-MA)共聚胶乳样品的凝胶渗透色谱GPC和特性粘度[η]的测定,应用普适校正原理和参数优化方法,订定了该共聚物在四氢呋喃中,30℃下的Mark-Houwink方程参数.结果得:K=3.421×10~(-2),α=0.64.将这一结果运用到GPC谱图的计算,所得的[η]与用粘度法实测值比较,最大偏差小于3.5％.
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| 关 键 词： | Mark-Houwink参数 GPC普适校正 特性粘度 VDC-MA共聚胶乳 |
| 收稿时间： | 1990-09-12 |
A NEW METHOD FOR DETERMINING MARK-HOUWINK CONSTANTS FROM GPC-[η] DATA |
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| LI Bo-geng,LIN Ren-he,CAO Kun,YU Zai-zhang. A NEW METHOD FOR DETERMINING MARK-HOUWINK CONSTANTS FROM GPC-[η] DATA[J]. Acta Polymerica Sinica, 1992, 0(1): 56-60 |
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| Authors: | LI Bo-geng LIN Ren-he CAO Kun YU Zai-zhang |
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| Affiliation: | Department of Chemistry Engineer; Zhejiang University; Hangzhou; Post code: 310027 |
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| Abstract: | GPC and intrinsic viscosity measurements of vinylidene chloride-methyl acrylate (wt. ratio 90:10) copolymer in tetrahydrofuran at 30℃ were done. Based on the principle of GPC universal calibration, a new precise and simple method was developed for determining the Mark-Houwink constants of the system. In this method, the experimental data of GPC and [η] from several samples, rather than two samples, were adopted for improving the reliability of the approach. The values of K=3.421×10 and a = 0.64 were obtained. |
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| Keywords: | Mark-Houwink consyants K and a GPC universal calibration Intrinsic vi- scosity VDC-MA Copolymer |
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