| STUDY ON SEGMENTED POLYURETHANE WITH MIXED SOFT SEGMENTS OF POLYCHLOROMETHYL METHYL SILOXANE AND POLYTETRAMETHYLENE OXIDE |
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| 作者姓名： | 蒋锡群 杨昌正 余学海 |
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| 作者单位： | Department of Chemistry，University of Nanjing，Nanjing 210008，Department of Chemistry，University of Nanjing，Nanjing 210008，Department of Chemistry，University of Nanjing，Nanjing 210008 |
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| 摘 要： | Two series of polyurethanes based on mixed polychloromethyl methyl siloxane and poly-tetramethylene oxide in different weight fractions were synthesized. The phase separation ofsamples was studied using DSC and dynamic mechanical property analysis. The results showedthat the introduction of chloromethyl group into polysiloxane increased its polarity and henceimproved the miscibilities with polytetramethylene oxide and polyurethane hard segment.Particularly, in the case of N-methyldiethanolamine extended materials, the surface and tensileproperties of these samples can be adjusted by various ratios of two soft segments.
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| 收稿时间： | 1993-04-09 |
STUDY ON SEGMENTED POLYURETHANE WITH MIXED SOFT SEGMENTS OF POLYCHLOROMETHYL METHYL SILOXANE AND POLYTETRAMETHYLENE OXIDE* |
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| JIANG Xiqun,YANG Changzheng,YU Xuehai.STUDY ON SEGMENTED POLYURETHANE WITH MIXED SOFT SEGMENTS OF POLYCHLOROMETHYL METHYL SILOXANE AND POLYTETRAMETHYLENE OXIDE[J].Chinese Journal of Polymer Science,1994,0(3):228-236. |
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| Authors: | JIANG Xiqun YANG Changzheng YU Xuehai |
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| Institution: | Department of Chemistry; University of Nanjing; Nanjing |
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| Abstract: | Two series of polyurethanes based on mixed polychloromethyl methyl siloxane and poly-tetramethylene oxide in different weight fractions were synthesized. The phase separation ofsamples was studied using DSC and dynamic mechanical property analysis. The results showedthat the introduction of chloromethyl group into polysiloxane increased its polarity and henceimproved the miscibilities with polytetramethylene oxide and polyurethane hard segment.Particularly, in the case of N-methyldiethanolamine extended materials, the surface and tensileproperties of these samples can be adjusted by various ratios of two soft segments. |
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| Keywords: | Mixed soft segments Polychloromethyl methyl siloxane Polyurethane Micro-phase separation |
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