| 用薄层色谱法表征苯乙烯-二甲基硅氧烷嵌段共聚物的结构 |
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| 引用本文： | 王源身,陈庆民. 用薄层色谱法表征苯乙烯-二甲基硅氧烷嵌段共聚物的结构[J]. 高等学校化学学报, 1984, 5(1): 139 |
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| 作者姓名： | 王源身 陈庆民 |
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| 作者单位： | 南京大学化学系 |
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| 摘 要： | 常规的红外或核磁法不能区别嵌段共聚物与均聚物的共混物。不同类型嵌段共聚物间的区别更加困难.我们用薄层色谱法(TLC)来表征嵌段共聚物的结构.根据TLC吸附机理,利用展开剂的极性大小可将均聚物及嵌段共聚物迅速地区别、鉴定与分离.实验时应注意控制条件以抑制薄层吸附剂的分子筛效应,避免分子量及其分布的干扰.
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| 收稿时间： | 1982-05-08 |
CHARACTERIZATION OF STYRENE-DIMETHYL-SILOXANE BLOCK COPOLYMERS BY THIN LAYER CHROMATOGRAPHY |
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| Wang Yuanshen,Chen Qingmin. CHARACTERIZATION OF STYRENE-DIMETHYL-SILOXANE BLOCK COPOLYMERS BY THIN LAYER CHROMATOGRAPHY[J]. Chemical Research In Chinese Universities, 1984, 5(1): 139 |
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| Authors: | Wang Yuanshen Chen Qingmin |
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| Affiliation: | Department of Chemistry, Nanjing University, Nanjing |
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| Abstract: | TLChas been used in distinguishing and characterizing polystyrene homopolymer and polystyrene-polydimethylsiloxane diblock or triblock copolymers. When developed with chloform or other suitable developing agents the polymers mentioned above would give different Rf values. This method is independent of the molecular weights and compositions of the samples. It may be used to determine rapidly whether the anionic polymerization reaction is successful. |
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