阳离子-π驱动吲哚基高性能聚脲聚合物薄膜的制备与表征  

Preparation and Characterization of Indole-based High Performance Polyurea Polymer Films Driven by Cation-π

作　　者：庞丽群 马腾宁 常冠军[1] PANG Liqun;MA Tengning;CHANG Guanjun(School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China)

机构地区：[1]西南科技大学材料与化学学院,四川绵阳621010

出　　处：《西南科技大学学报》2025年第1期16-21,52,共7页Journal of Southwest University of Science and Technology

基　　金：四川省杰出青年人才基金项目(2021JDJQ0033)。

摘　　要：以增强增韧为目标,设计了一种富电子的吲哚基聚脲结构并引入Fe^(3+),基于吲哚和Fe^(3+)之间的阳离子-π相互作用构建兼具高强度与韧性的吲哚基聚脲薄膜。利用红外光谱仪、紫外-可见分光光度计、荧光分光光度计、EDS能谱仪、电子万能试验机等对薄膜的结构和性能进行了表征。结果表明:引入Fe^(3+)使聚合物力学强度由原来的39 MPa上升到49 MPa,断裂伸长率也由5.45%上升到5.96%,说明Fe^(3+)与吲哚间的阳离子-π相互作用提高了聚脲聚合物薄膜的韧性和强度;引入Fe^(3+)后薄膜表现出良好的耐溶剂性及耐热性能。An electron-rich indole-based polyurea structure was designed and Fe^(3+)was introduced to enhance the strength and toughness.An indole-based polyurea film with both high strength and toughness was constructed based on the cation-πinteraction between indole and Fe^(3+).The structure and properties of the films were characterized by infrared spectrometer,ultraviolet-visible spectrophotometer,fluorescence spectrometer,EDS energy spectrometer and electronic universal testing machine.The results show that the introduction of Fe^(3+)increases the mechanical strength of the polymer from 39 MPa to 49 MPa,and the elongation at break from 5.45%to 5.96%,indicating that the cation-πinteraction between Fe^(3+)and indole improves the toughness and strength of polyurea polymer films.Meanwhile,the introduction of Fe^(3+)results in excellent solvent resistance and heat resistance of the film.

关 键 词：阳离子-π 吲哚基 聚脲聚合物 

分 类 号：TB383.2[一般工业技术—材料科学与工程] TQ323[化学工程—合成树脂塑料工业]