【摘 要】
：
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
【机 构】
：
Department of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang 330022,China;Jia
论文部分内容阅读
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.
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