Abstract
1-Octyl-3-methylimidazolium chloride ([C8MIM][Cl]) shows the greatest potential to replace N-methylpyrrolidone/CaCl2 as solvent for the synthesis of poly(p-phenylene terephthalamide) (PPTA), a high-strength material when spun into a fiber. Coordinating anions are crucial to prevent precipitation of the polymer during synthesis. Additionally, the imidazolium cations play an essential role in gelation of the reaction mixture and enable the polycondensation reaction to continue in a gel state. Analysis of Kamlet–Taft parameters and Gutmann donor and acceptor numbers of ionic liquids and various solvents showed that balanced interactions between the secondary amide bonds of the polymer, anion, cation, and solvent are required to form a network of hydrogen bond interactions throughout the reaction mixture. This hypothesis was supported by the fact that tri-n-butyl phosphate (TBP), containing similar Kamlet–Taft and Gutmann solvent parameters as N-methylpyrrolidone, was able to produce PPTA with an inherent vis...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
