Carboxyl-functionalized nanocellulose/sulfonated poly(aryl ether ether ketone ketone) composites for proton exchange membrane by electrospinning
| العنوان: | Carboxyl-functionalized nanocellulose/sulfonated poly(aryl ether ether ketone ketone) composites for proton exchange membrane by electrospinning |
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| المؤلفون: | Xiaohui Guo, Xue Yang, Wanli Liu, Shuai Zheng, Yuanrui Wang, Wei Hu, Baijun Liu |
| المصدر: | High Performance Polymers. :095400832311625 |
| بيانات النشر: | SAGE Publications, 2023. |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Polymers and Plastics, Organic Chemistry, Materials Chemistry |
| الوصف: | A novel nanocomposite proton-exchange membrane (PEM) was obtained by combined electrospinning and solution casting of a composite solution of sulfophenylated poly(ether ether ketone ketone) (SP-PEEKK) and maleic anhydride modified nanocellulose (MN). SP-PEEKK was prepared by polymerization between phenyl hydroquinone and 1,4-bis(4-fluorobenzoyl)benzene followed by post-sulfonation. Nanocellulose (NCC) was prepared by the acid treatment of MCC with sulfuric acid, and MN with carboxyl group was obtained by modifying NCC with maleic anhydride. PEMs with 2% MN (MN2) showed a water uptake of 28% at 100°C, which was higher than that of MN0 (with 0% MN content). MN2 possessed a high tensile strength of 48.7 MPa, Young’s modulus of 1.3 GPa, and elongation at break of 34%, which was 54%, 21%, and 16% higher than those of MN0, respectively. Thus, the ordered distributed of MN was illustrated to be the effective reinforcing material for SP-PEEKK membranes because of the strong interface between the hydroxyl group of rigid MN and the sulfonic acid group of SP-PEEKK. MN2 also had a substantially higher proton conductivity of 0.09 S cm−1 at 90°C than MN0 (0.037 S cm−1). Therefore, combined electrospinning and solution casting was found to be a promising choice to improve the proton conductivity of nanocomposite PEMs, as promoted by the three-dimensional hydrogen bond-proton-transport network formed by the well-oriented MN in SPEEKK produced by the electrospinning. |
| تدمد: | 1361-6412 0954-0083 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::326d7dbe2ff879bfd920166638e76141Test https://doi.org/10.1177/09540083231162515Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........326d7dbe2ff879bfd920166638e76141 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 13616412 09540083 |
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