| 以柠檬酸为单体的超支化聚酯的合成及表征 |
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| 引用本文： | 陈卫星,崔春妮,马爱洁,单民瑜. 以柠檬酸为单体的超支化聚酯的合成及表征[J]. 西安工业大学学报, 2010, 30(2): 150-154 |
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| 作者姓名： | 陈卫星 崔春妮 马爱洁 单民瑜 |
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| 作者单位： | 西安工业大学,材料与化工学院,西安,710032 |
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| 基金项目： | 陕西省自然科学基金，陕西省教育厅自然科学专项基金 |
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| 摘 要： | 为了确定合成端羧基超支化聚酯的工艺参数,以柠檬酸为单体,SOCl2为酰氯化试剂,THF为溶剂,采用微波合成仪,缩聚合成了端羧基超支化聚酯.通过考察催化剂用量和聚合时间对酯化率的影响,确定了较优的工艺参数.经红外、核磁共振、差示扫描量热仪和凝胶色谱仪对产物进行了初步表征及简单的性能检测.结果表明:以柠檬酸为单体,微波法缩聚可以制得超支化聚酯.SOCl2用量为2.5 g,聚合时间为30 min时,酯化率为93%,产物分子量为2 385 g/mol.
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| 关 键 词： | 超支化聚酯 柠檬酸 氯化亚砜 微波法 |
Synthesis and Characterization of Hyperbranched Polyester with Citric Acid as Monomer |
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| CHEN Wei-xing,CUI Chun-ni,MA Ai-jie,SHAN Min-yu. Synthesis and Characterization of Hyperbranched Polyester with Citric Acid as Monomer[J]. Journal of Xi'an Institute of Technology, 2010, 30(2): 150-154 |
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| Authors: | CHEN Wei-xing CUI Chun-ni MA Ai-jie SHAN Min-yu |
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| Affiliation: | CHEN Wei-xing,CUI Chun-ni,MA Ai-jie,SHAN Min-yu(School of Materials , Chemical Engineering,Xi'an Technological University,Xi'an 710032,China) |
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| Abstract: | The carboxyl-terminated hyperbranched polyesters were synthesized with citric acid as monomer,SOCl2 as acylchloride reagent,THF as solvent by microwave instrument.The influences of the amount of catalyst,polymerization time and temperature on esterification rate,the preparation process were studied.And it was characterized by FT IR,1H NMR,DSC and SEC.It was found that the reaction speed and esterification rate using microwave method were greatly increased.When SOCl2 2.5 g,reaction time 30 min,esterification... |
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| Keywords: | hyperbranched polyester citric acid SOCl2 microwave synthesis |
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