| 树枝状聚醚的合成与实验条件探讨 |
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| 引用本文： | 史博,梁亮,聂丽君.树枝状聚醚的合成与实验条件探讨[J].材料导报,2011,25(10):36-39. |
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| 作者姓名： | 史博 梁亮 聂丽君 |
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| 作者单位： | 1. 广东石油化工学院化工与环境工程学院,茂名,525000
2. 广东石油化工学院化工与环境工程学院,茂名525000;广东工业大学轻化工学院,广州510090 |
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| 基金项目： | 广东省自然科学基金，广东省青年创新基金 |
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| 摘 要： | 以3,5-二羟基苯甲醇和氯化苄为原料,经Willamson醚化反应和卤代反应合成了1-3代以CH2Br为核的树枝状聚醚,并分别用核磁和差示扫描量热仪进行了结构和熔点分析。对比了氯化亚砜、三溴化磷、四溴化碳卤代试剂的卤代效果,以及聚乙二醇-400、18-冠-6为相转移催化剂的催化效果。结果表明,采用Williamson醚化反应可以合成确定结构的1-3代树枝状聚醚,其熔点分别为80℃、107℃、122℃。以四溴化碳为卤化剂,冠醚为催化剂可以得到较高的产物收率。
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| 关 键 词： | 聚醚 树枝状 合成 实验条件 |
Research on the Synthesis and Reaction Conditions of Dendritic Polyether |
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| SHI Bo,LIANG Liang,NIE Lijun.Research on the Synthesis and Reaction Conditions of Dendritic Polyether[J].Materials Review,2011,25(10):36-39. |
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| Authors: | SHI Bo LIANG Liang NIE Lijun |
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| Affiliation: | 1(1 Institute of Chemical and Environmental Technology,Guangdong University of Petrochemical Technology,Maoming 525000;2 Faculty of Light and Chemical,Guangdong University of Technology,Guangzhou 510090) |
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| Abstract: | Dendritic polyethers from the first to the third generation,which benzyl bromine is the core,were synthesized by reaction of Williamson and halogenating reaction.1H NMR and DSC were used to characterize the structure and melt point of the dendritic polyether,respectively.The halogenated efficiency of thionyl chloride,phosphlrus tribromide and tetrabromomethane were compared,and the catalytic effect of 18-crown-6 and polyglycol 400 were studied.The results show that the melt points of the dendritic polyethers from the first to the third generation are 80℃,107℃ and 122℃,the yields of dendritic polyether are much higher than that of the others’ when tetrabromomethane and 18-crown-6 are used. |
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| Keywords: | polyether dendritic synthesize reaction condition |
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