TY - JOUR
T1 - Influence of Anion and Cation Structures on Ionic Liquid Epoxy-Based Vitrimers
AU - Wanghofer, Florian
AU - Trausner, Carina
AU - Reisinger, David
AU - Wolfahrt, Markus
AU - Schlögl, Sandra
N1 - Publisher Copyright: © 2024 The Authors. Published by American Chemical Society.
PY - 2024/1/1
Y1 - 2024/1/1
N2 - Ionic liquids with selected anions (Tf2N-, BF4-, and PF6-) and imidazolium cations bearing two terminal epoxy groups and varying aliphatic, aromatic, and dicationic spacers were synthesized. The synthesis procedures followed ion exchange mechanisms and afforded the products in high yields. Vitrimers were prepared by curing the resins with dodecenyl succinic anhydride in the presence of a base catalyst. In a comprehensive approach, the influence of the ion structure on the cure kinetics, bond exchange reactions, and thermal, mechanical, and healing performance of the dynamic polyester networks was assessed. The tensile strength could be varied over several orders of magnitude (229 kPa-23.9 MPa), while the glass-transition temperatures ranged between 1 and 59 °C. Especially, the anion exchange was found to be a powerful tool to tailor the properties of the dynamic networks. By using the PF6- anion, a network with improved thermal, mechanical, and self-healing properties could be obtained.
AB - Ionic liquids with selected anions (Tf2N-, BF4-, and PF6-) and imidazolium cations bearing two terminal epoxy groups and varying aliphatic, aromatic, and dicationic spacers were synthesized. The synthesis procedures followed ion exchange mechanisms and afforded the products in high yields. Vitrimers were prepared by curing the resins with dodecenyl succinic anhydride in the presence of a base catalyst. In a comprehensive approach, the influence of the ion structure on the cure kinetics, bond exchange reactions, and thermal, mechanical, and healing performance of the dynamic polyester networks was assessed. The tensile strength could be varied over several orders of magnitude (229 kPa-23.9 MPa), while the glass-transition temperatures ranged between 1 and 59 °C. Especially, the anion exchange was found to be a powerful tool to tailor the properties of the dynamic networks. By using the PF6- anion, a network with improved thermal, mechanical, and self-healing properties could be obtained.
KW - anhydride
KW - epoxy
KW - ionic liquid
KW - self-healing
KW - transesterification
KW - vitrimer
UR - http://www.scopus.com/inward/record.url?scp=85181816333&partnerID=8YFLogxK
U2 - 10.1021/acsapm.3c02293
DO - 10.1021/acsapm.3c02293
M3 - Article
AN - SCOPUS:85181816333
SN - 2637-6105
VL - 6.2024
SP - 649
EP - 657
JO - ACS applied polymer materials
JF - ACS applied polymer materials
IS - 1
ER -