High Performance Electrospun Polynaphthalimide Nanofibrous Membranes with Excellent Resistance to Chemically Harsh Conditions

Autor: Hongtao Guo, Hong Fang, Meng-Jie Yuan, Shu-Jing Li, Kunming Liu, Haoqing Hou, Ru-Bei Hu, Zhao-Yu Hu, Shaohua Jiang
Rok vydání: 2021
Předmět:
Zdroj: Chinese Journal of Polymer Science. 39:1634-1644
ISSN: 1439-6203
0256-7679
DOI: 10.1007/s10118-021-2634-8
Popis: Polynaphthalimide (PNI) with six-membered imide ring (6-PI) has better chemical resistance than five-membered imide ring (5-PI), but is difficult to be processed into nanofibers due to the poor processability. In this work, we proposed a template strategy to fabricate nanofiber 6-PI membranes and their composite membranes. Neat 6-PI and 6-PI composite fibrous membranes were prepared using high-molecular-weight polymers 5-PAA and PVP as templates by electrospinning. FTIR, DMA, TGA and tensile tests were used to characterize their chemical structures, thermal stability and mechanical properties. Further eye-observation, micro-morphology investigation and tensile tests were applied to evaluate the chemical resistance of nanofibrous membranes in strong acid, strong alkaline, and concentrated salt. The results demonstrated that 6-PI nanofibrous membranes possessed the best thermal stability, best acid, alkaline, and salt resistance with the highest mechanical retention. This study will provide basic information for high-performance electrospun 6-PI nanofiber membranes and provide opportunities for applications of PIs in different chemically harsh environments.
Databáze: OpenAIRE
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