| 己二酰双己内酰胺扩链合成聚己二酸丁二醇酯 |
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| 引用本文： | 李开勇,赵京波. 己二酰双己内酰胺扩链合成聚己二酸丁二醇酯[J]. 北京化工大学学报(自然科学版), 2005, 32(6): 36-39 |
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| 作者姓名： | 李开勇 赵京波 |
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| 作者单位： | 北京化工大学材料科学与工程学院，北京 100029 |
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| 摘 要： | 以己二酰双己内酰胺(ABC)作为扩链剂，对低相对分子质量的聚己二酸丁二醇酯(PBA)进行扩链，研究了各种因素对聚酯相对分子质量的影响; 并采用1H-NMR和红外光谱对扩链后聚酯的结构进行了表征，提出了扩链反应的机理。扩链剂己二酰双己内酰胺与端羟 基PBA进行扩链反应时,主要通过脱除己内酰胺，以己二酰结构将PBA预聚体偶联起来，使聚酯的相对分子质量成倍增加。
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| 关 键 词： | 己二酰双己内酰胺 扩链剂 聚己二酸丁二醇酯 己二酰双己内酰胺 扩链剂 聚己二酸丁二醇酯 |
| 收稿时间： | 2005-04-07 |
| 修稿时间： | 2005-04-07 |
Synthesis of polybutylene adipate by a chain-extending reaction with adipoyl bis-caprolactamate |
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| LI Kai-yong,ZHAO Jing-bo. Synthesis of polybutylene adipate by a chain-extending reaction with adipoyl bis-caprolactamate[J]. Journal of Beijing University of Chemical Technology, 2005, 32(6): 36-39 |
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| Authors: | LI Kai-yong ZHAO Jing-bo |
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| Affiliation: | College of Materials Science and Engineering, Beijing University of Chem ical Technology, Beijing 100029, China |
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| Abstract: | Polybutylene adipate (PBA) with a high molecular weight was synthesized by a chain-extending reaction from HO-terminated polybutylene adipate with adipoyl bisca prolactamate (ABC) as a chain-extender under a reduced pressure in bulk state. The influence factors were studied and the chain-extended polyester with Mn up to 32843 and Mw up to 65244 was obtained. The polyester was characterized by FTIR spectrum and H-NMR spectrum, and the mechanism of the chain-extending reaction was proposed. The chain-extending reaction of HO-terminated PBA with ABC proceeds through the elimination of the caprolactam rings, and the adipoyl groups in the chain-extender couple the hydroxyl-terminated PBA together, resulting in the molecular weight increased. |
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| Keywords: | adipoyl biscaprolactamate chain-extender polybutylene adipate |
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