Ti3C2Tx MXene对聚2,5-呋喃二甲酸乙二醇酯的催化成核作用研究
Catalytic and Nucleation Study of Ti3C2Tx MXene on Furanic Polyesters
费璇 1江艳华 1王英杰 1卢光明 1赵伟伟 1刘小青1
作者信息
- 1. 中国科学院宁波材料技术与工程研究所,宁波 315201
- 折叠
摘要
长期以来,聚酯催化剂主要为锑系化合物,存在潜在的重金属污染风险.为开发一种高效环保的聚酯缩聚催化剂,本工作首先对新型二维材料Ti3C2Tx MXene与代表性锑系催化剂Sb2O3进行催化对比研究.结果发现,Ti3C2Tx MXene对聚2,5-呋喃二甲酸乙二醇酯(PEF)有显著的缩聚催化活性,所得PEF特性黏度可以达到0.74 dL/g.其次,使用差示扫描量热仪(DSC)对两种催化剂制备的PEF聚酯进行热性能与结晶动力学研究,确认了具有异质纳米片结构的Ti3C2Tx MXene可以作为成核剂提升PEF的结晶速率.最后,机械性能研究表明,催化剂种类不影响PEF的拉伸模量与拉伸强度,进一步表明Ti3C2Tx MXene与PEF的相容性较好.综上,本工作表明Ti3C2Tx MXene是PEF的高效催化/成核剂.
Abstract
Polyester catalysts are mainly antimony-based compounds for a long time,which have potential heavy-metal hazards.To develop an efficient and environmentally friendly polycondensation catalyst,firstly,a comparative catalytic study of the novel two-dimensional material Ti3C2Tx MXene and the representative antimony-based catalyst Sb2O3 was conducted.The results showed that Ti3C2Tx MXene exhibited significant catalytic activity for the condensation of polyethylene 2,5-furandicarboxylate(PEF)with intrinsic viscosity up to 0.74 dL/g.Secondly,the thermal properties and crystallization kinetics of PEF prepared by both catalysts were investigated using differential scanning calorimetry(DSC).Ti3C2Tx MXene with the heterogeneous nanosheet structure was confirmed as a nucleating agent to enhance the crystallization rate of PEF.Finally,the mechanical investigation showed that the catalyst type did not affect the mechanical properties of PEF,indicating the good compatibility of Ti3C2Tx MXene with PEF.In summary,this work showed that Ti3C2TxMXene is an efficient catalyst/nucleating agent for PEF.
关键词
2,5-呋喃二甲酸/聚酯/MXene/催化合成/结晶性能Key words
2,5-Furandicarboxylic acid/Polyesters/MXene/Catalytic synthesis/Crystallization property引用本文复制引用
基金项目
国家重点研发计划(2021YFB3700300)
国家重点研发计划(2022YFC2104500)
国家自然科学基金面上项目(52373016)
出版年
2024
NETL
NSTL
万方数据