氨基桥联双酚钇配合物催化δ-和ε-己内酯开环共聚合
PDF下载 (58)戴雅男,蒋 浩,牟泽怀.氨基桥联双酚钇配合物催化δ-和ε-己内酯开环共聚合[J].宁波大学学报(理工版),2025,38(6):54-59.DOI:10.20098/j.cnki.1001-5132.2025.0319
DAI Yanan,JIANG Hao,MOU Zehuai.Ring-opening (co)polymerization of δ- and ε-caprolactone mediated by bis(phenolate) yttrium complexes[J].Journal of Ningbo University(Natural Science & Engineering Edition),2025,38(6):54-59.DOI:10.20098/j.cnki.1001-5132.2025.0319
| Title: | Ring-opening (co)polymerization of δ- and ε-caprolactone mediated by bis(phenolate) yttrium complexes |
| 作者: | 戴雅男, 蒋 浩, 牟泽怀 |
| Author(s): | DAI Yanan, JIANG Hao, MOU Zehuai |
| 关键词: | 钇配合物; 开环聚合; 己内酯; 共聚酯 |
| Keywords: | yttrium complex; ring-opening polymerization; caprolactone; copolyester |
| 分类号: | O63-0 |
| DOI: | 10.20098/j.cnki.1001-5132.2025.0319 |
| 文献标识码: | A |
| 摘要: | 脂肪族聚酯因具有良好的易降解性和生物相容性而在环保材料和医学领域具有广泛的应用。共聚合策略是调节聚合物性能的有效手段，是高分子合成的研究重点。氨基桥联双酚钇配合物能够高效引发ε-己内酯（εCL）和其生物基异构体δ-己内酯（δHL）的均聚以及二者的共聚合。采用混合加料法制备了系列δHL/εCL梯度共聚物，聚合物中δHL单元的摩尔分数在9%~ 75%。采用顺序加料法制备了δHL-b-εCL两嵌段共聚物。凝胶渗透色谱显示所得共聚物为单峰并具有较窄的分子量分布（Ð＜1.4）。差示扫描量热法分析显示共聚物中δHL单元的摩尔分数对其熔点有明显的影响，相比εCL均聚物，δHL单元的引入可以调节共聚物的结晶性能。 |
| Abstract: | Aliphatic polyesters have been widely used in environment-friendly materials and medical fields because of their good biocompatibility and biodegradability. Copolymerization strategy is an effective strategy to regulate polymer properties and has elicited significant interest in polymer synthesis. The amino-bridged bis(phenolate) yttrium complex can effectively initiate the homopolymerization and their copolymerization of ε-caprolactone (εCL) and its bio-based isomer δ-hexalactone (δHL). In this paper, a series of δHL/εCL gradient copolymers were prepared by mixed feeding method, and the molar content of δHL in copolymers ranged from 9% to 75%. The δHL-b-εCL diblock copolymer was prepared by sequential feeding. Gel permeation chromatography shows that the resulting copolymers were unimodal with a narrow molecular weight distribution (Ð < 1.4). Differential scanning calorimetry analysis shows that the molar content of δHL in the copolymer has a significant effect on its melting point. Compared to εCL homopolymer, the incorporation of poly(δHL) sequence can regulate the crystallization properties of the copolymer. |
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| 备注/Memo: | 收稿日期：2025−03−25 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ 基金项目：宁波市自然科学基金（2024J113） 第一作者：戴雅男，硕士研究生，主要研究方向为聚酯材料合成。E-mail: daiyanandai@163.com *通信作者：牟泽怀，博士/副教授，主要研究方向为高分子合成。E-mail: mouzehuai@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
