Thermal cross-linked sulfonated poly(ether ether ketone) (SPEEK) with NMP solvent

Publish Year: 1396
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

H2FC04_054

تاریخ نمایه سازی: 13 شهریور 1396

Abstract:

Sulfonated Poly Ether Ether Ketone (SPEEK) with NMP solvent was thermally treated to study the possibility of polymer cross-linking. HNMR analysis demonstrated the degree of sulfonation (DS) of the initial SPEEK polymer that it was 86%. Ion exchange capacity (IEC) test was done to determine the DS and the degree of cross-linking (DCL) after thermal treatment [1].Maximum degree of cross-linking was 53.48%. DS reduction is due to loss of sulfonic acid groups and a reason for cross-linking. For verification of chemical stability, Fenton test was done. The time of disappearance of cross-linked membrane was 30 times longer than untreated membrane. The results from IEC showed that cross linking happens in SPEEK with NMP solvent. Cross linking can increase the stability of sulfonic acid moieties within the SPEEK membrane as proved with Fenton test

Authors

Fatemeh Beyraghi

School of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran ۱۶۸۴۶-۱۳۱۱۴, Iran

Soosan Rowshanzamir

School of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran ۱۶۸۴۶-۱۳۱۱۴, Iran /Fuel Cell Laboratory, Green Research Center, Iran University of Science and Technology, Narmak, Tehran, Iran