| STUDIES ON POLY(ETHYLENE TEREPHTHA LATE)-POLY(TETRAMETHYLENE ETHER) MULTIBLOCK COPOLYMER.Ⅰ.COMPOSITIONAL HOMOGENEITY |
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| 引用本文： | 詹永坚,应琦琮,吴美琰,钱人元.STUDIES ON POLY(ETHYLENE TEREPHTHA LATE)-POLY(TETRAMETHYLENE ETHER) MULTIBLOCK COPOLYMER.Ⅰ.COMPOSITIONAL HOMOGENEITY[J].高分子科学,1991,0(2):130-136. |
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| 作者姓名： | 詹永坚 应琦琮 吴美琰 钱人元 |
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| 作者单位： | Institute of Chemistry，Academia Sinica，Beijing 100080，Institute of Chemistry，Academia Sinica，Beijing 100080，Institute of Chemistry，Academia Sinica，Beijing 100080，Institute of Chemistry，Academia Sinica，Beijing 100080 |
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| 摘 要： | The compositional homogeneity of a poly (ethylene terephthalate)-poly (tetramethylene ether) multiblock copolymer sample with low content of hard segment was examined by GPC, TLC, and solubility method. The copolymer sample was found to have a uniform composition as a function of elution volume over the major portion of sample from GPC method. However within one elution fraction, the copolymer chains, although having the same hydrodynamic volume, may have some difference in composition. Two fractions with different composition were obtained by precipitation in ethanol. Some low molar mass copolymers were also separated by a TLC technique from the copolymer sample.
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| 收稿时间： | 1990-03-23 |
STUDIES ON POLY(ETHYLENE TEREPHTHA LATE)-POLY(TETRAMETHYLENE ETHER) MULTIBLOCK COPOLYMER.Ⅰ.COMPOSITIONAL HOMOGENEITY |
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| ZHAN Yongjian,YING Qicong,WU Meiyan,QIAN Renyuan.STUDIES ON POLY(ETHYLENE TEREPHTHA LATE)-POLY(TETRAMETHYLENE ETHER) MULTIBLOCK COPOLYMER.Ⅰ.COMPOSITIONAL HOMOGENEITY[J].Chinese Journal of Polymer Science,1991,0(2):130-136. |
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| Authors: | ZHAN Yongjian YING Qicong WU Meiyan QIAN Renyuan |
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| Institution: | Institute of Chemistry; Academia Sinica; Beijing |
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| Abstract: | The compositional homogeneity of a poly (ethylene terephthalate)-poly (tetramethylene ether) multiblock copolymer sample with low content of hard segment was examined by GPC, TLC, and solubility method. The copolymer sample was found to have a uniform composition as a function of elution volume over the major portion of sample from GPC method. However within one elution fraction, the copolymer chains, although having the same hydrodynamic volume, may have some difference in composition. Two fractions with different composition were obtained by precipitation in ethanol. Some low molar mass copolymers were also separated by a TLC technique from the copolymer sample. |
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| Keywords: | Segmented copolymer Polyester-Polyether Block copolymer Compositional homogeneity |
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