| 乙烯基单体／N-苯基马来酰亚胺共聚物组成分布测定原理及应用 |
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| 引用本文： | 单国荣,翁志学,黄志明,杜淼,潘祖仁.乙烯基单体／N-苯基马来酰亚胺共聚物组成分布测定原理及应用[J].高等学校化学学报,2000,21(10):1610-1612. |
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| 作者姓名： | 单国荣 翁志学 黄志明 杜淼 潘祖仁 |
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| 作者单位： | 浙江大学化工系，高分子科学与工程研究所，杭州 310027 |
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| 基金项目： | 教育部博士学科点专项科研基金! (批准号 :95 3 3 5 0 4)资助 |
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| 摘 要： | 共聚物分子量往往根据溶液性质来测定 ,而组成变化对高分子溶液的性质有影响 .如果共聚物组成不随分子量而变化 ,则认为组成分布均匀 .用化学或光谱方法得到的共聚物组成只是一个平均值 ,不能完全表征组成分布情况 .根据溶液性质差异进行分级 ,需选择合适的溶剂 沉淀剂体系 ,且操作时间长 .采用薄层色谱法所需时间亦长 ,且由于存在扩散效应而掩盖真实的共聚物组成分布 .自从凝胶渗透色谱 (ＧＰＣ)出现后 ,将紫外吸收光谱 (ＵＶ)或红外吸收光谱仪与示差折光仪 (ＤＲ)串联 ,一个对组成敏感 ,一个对浓度 (共聚物总量 )敏感 ,将组成变化和分子量…
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| 关 键 词： | 乙烯基单体 N苯基马来酰亚胺 共聚物组成分布 |
| 文章编号： | 0251-0790(2000)10-1610-03 |
| 修稿时间： | 1999年5月10日 |
Principle and Application of Composition Distribution Measurement for Vinyl s/N-Phenyl mai eimide Copolymer |
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| SHAN Guo-rong,WENG Zhi-Xue,HUANG Zhi-Ming,DU Miao,PAN Zu-Ren.Principle and Application of Composition Distribution Measurement for Vinyl s/N-Phenyl mai eimide Copolymer[J].Chemical Research In Chinese Universities,2000,21(10):1610-1612. |
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| Authors: | SHAN Guo-rong WENG Zhi-Xue HUANG Zhi-Ming DU Miao PAN Zu-Ren |
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| Abstract: | The principle and calculation equation of composition distribution measurement for vinyls/ N phenylmaleimide(PMI) copolymer were presented using the information of differential refractometer (DR) and ultraviolet spectrophotometer(UV) detectors connected with the gel permeation chromatography(GPC). With the information of DR and UV detectors, the effects of copolymerization methods and process on the composition distributions of styrene PMI, methyl methacrylate PMI and vinyl chloride PMI copolymers systems were studied. It was found that the composition distribution of copolymer was even at low conversion, but changed with the increasing of conversion. WT5HZ] |
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| Keywords: | Vinyl monomer N Phenylmaleimide Composition distribution of copolymer |
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