环状酸酐和环氧化物共聚制备聚酯及其性能研究
Preparation and Properties of Polyesters from Copolymerization of Cyclic Anhydrides and Epoxides
李思漩 1李鹏 1戴鑫 1李晓双 1胡君航 1宋昭峥 1蒋庆哲2
作者信息
- 1. 中国石油大学(北京)理学院,北京 102249
- 2. 中国石油大学(北京)理学院,北京 102249;对外经济贸易大学国际经济贸易学院,北京 100029
- 折叠
摘要
为解决合成聚酯过程中缩聚聚合的高能耗和环酯开环聚合单体种类少的问题,使用胺基酚类铁系配合物催化环状酸酐与环氧化物共聚反应,成功合成了六种聚酯产物.采用核磁共振氢谱(1H NMR)、傅里叶变换红外光谱(FTIR)、X射线衍射(XRD)、接触角测量仪、热重分析(TG)、差示扫描量热(DSC)和凝胶渗透色谱(GPC)对聚酯的结构和性能进行表征.结果表明:所有聚酯均为无定型结构且具有亲水性能;聚酯起始分解温度(T5%)为250～300℃,玻璃化转变温度(Tg)为55～139℃.含有刚性环己烷分子结构的聚酯Tg较高,热力学稳定性能较好.
Abstract
In order to solve the problems of high energy consumption of condensation polymerization and small variety of monomers for ring-opening polymerization of cyclic esters in the process of synthesizing polyesters,six polyester products were successfully synthesized using aminophenolic iron-based complexes to catalyze the copolymerization reaction of cyclic anhydride and epoxides.Nuclear magnetic resonance hydrogen spectroscopy(1H NMR),Fourier transform infrared spectroscopy(FTIR),X-ray diffraction(XRD),contact angle meter,thermogravimetric analysis(TG),differential scanning calorimetry(DSC),and gel permeation chromatography(GPC)were used to characterize the structures and properties of polyester.The results showed that all the polyesters with hydrophilic properties were amorphous structures.The initial decomposition temperature(T5%)of polyesters was 250～300℃and the glass transition temperature(Tg)of polyesters was 55～139℃.Polyesters containing rigid cyclohexane structure showed higher Tg and better thermomechanical stability performance.
关键词
聚酯/环状酸酐/环氧化物/共聚Key words
Polyester/Cyclic anhydrides/Epoxides/Copolymerizaiton引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据