Premium
Synthesis and Characterization of Sulfonated Co‐Polyimides With Enhanced Flexibility, Thermal and Methanol Stability for Potential Fuel Cell Applications
Author(s) -
Shaukat Tuba,
Manzoor Aalia,
Ikram Sadaf,
Butt Tehmeena Maryum,
Siddiqi Humaira Masood,
Janjua Naveed Kausar
Publication year - 2025
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.56950
Subject(s) - thermal stability , fuel cells , characterization (materials science) , materials science , flexibility (engineering) , direct methanol fuel cell , methanol , chemical engineering , methanol fuel , thermal , polymer chemistry , chemistry , nanotechnology , organic chemistry , engineering , thermodynamics , electrode , statistics , mathematics , physics , anode
ABSTRACT Fabrication of proton exchange membranes with high conductivity, flexibility, and lower swelling ratio has been a lasting challenge. Here, we proposed a synthesis of highly flexible new sulfonated co‐polyimides (co‐SPIs) through one‐step thermal imidization by polymerizing 4,4′‐diaminostilbene‐2,2′‐disulfonic acid (SDA) with pyromellitic dianhydride (PMDA) and poly (ether amine) (PEA). Co‐SPIs with a high degree of sulfonation (DS) (50%–70%) were successfully synthesized. These synthesized co‐SPIs displayed good flexibility and thermal stability in comparison to literature‐reported polymers. Furthermore, the methanol uptake for co‐SPIs with 70% DS was 12.5%, which is less than standard Nafion (22% methanol uptake). Hence, these co‐SPIs with enhanced flexibility, thermal stability, and lower swelling ratio in methanol make them a good candidate for fuel cell applications.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom