| 一类含硝基偶氮苯侧基的共聚聚氨酯的合成与表征 |
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| 引用本文： | 谌东中,吴立芬,陈庆民,余学海. 一类含硝基偶氮苯侧基的共聚聚氨酯的合成与表征[J]. 高分子材料科学与工程, 1999, 15(3): 41-44 |
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| 作者姓名： | 谌东中 吴立芬 陈庆民 余学海 |
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| 作者单位： | 南京大学高分子科学与工程系,南京,210093 |
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| 摘 要： | 合成了一类带硝基偶氮苯侧逻的共聚聚氨酯，并用ＦＴ－ＩＲ、ＤＳＣ、ＷＡＸＤ和偏江显微镜等方法进行了表征。发现这类刚性侧链宰隔基直接连于主链上的共聚聚氨酯均表现为结晶性聚合物，由于硝基和羰基均可与氨酯键上的氢形成强氢键以及刚性链段的结晶，使体系以氢键为物理交联点的结晶网络，这类共聚聚氨酯在通常有机溶剂中的溶解性很差。提出了一个假设模型对该类共聚聚氢氨酯的结晶行为进行解释。
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| 关 键 词： | 共聚聚氨酯 表征 结晶聚合物 硝基偶氮苯 氢键 |
SYNTHESIS AND CHARACTERIZATION OF A KIND OF COPOLYURETHANES WITH NITRO-SUBSTITUTED AZOBENZENE SIDE GROUPS |
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| Chen Dongzhong,Wu Lifen,Chen Qingmin,Yu Xuehai. SYNTHESIS AND CHARACTERIZATION OF A KIND OF COPOLYURETHANES WITH NITRO-SUBSTITUTED AZOBENZENE SIDE GROUPS[J]. Polymer Materials Science & Engineering, 1999, 15(3): 41-44 |
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| Authors: | Chen Dongzhong Wu Lifen Chen Qingmin Yu Xuehai |
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| Abstract: | A kind of copolyurethanes withnitro-substituted azobenzene side groups have been synthesized and characterized by FT-IR,UV, DSC, WAXD and PLM(polarized light microscopy). These copolyurethanes which have nospacer in the side groups are all crystalline polymers, their poor solubilities wereattributed to strong hydrogen bonds between nitro-H(N=) and carbonyl-H(N=) and to thecrystallinity. A model has been presented for the illustration of the formation ofcrystals. |
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| Keywords: | copolyurethane characterization crystalline polymer nitro-substituted azobenzene hydrogen bond |
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