Electrospun Polyphenylquinoxaline Ultrafine Non-woven Fibrous Membranes with Excellent Thermal and Alkaline Resistance: Preparation and Characterization 


Vol. 20,  No. 12, pp. 2485-2492, Dec.  2019
10.1007/s12221-019-9349-2


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  Abstract

A series of polyphenylquinoxaline (PPQ) ultrafine non-woven fibrous membranes have been first successfully prepared via the electrospinning procedure with the soluble PPQ solutions as the starting materials. For this purpose, various organo-soluble PPQ resins were synthesized via the one-step high temperature polycondensation procedure from the aromatic ether-bridged bis(慣-diketone) and bis(o-diamine) monomers. Flexible ether linkages and pendant bulky phenyl substituents endowed the PPQ resins good solubility in polar aprotic solvents. The high-molecular-weight PPQ resins were dissolved in N-methyl-2-pyrrolidone (NMP) to afford the PPQ electrospinning solution except PPQ-Ia derived from 4,4'- oxydibenzil (ODB) and 3,3'-diaminobenzidine (DAB) due to the limited solubility in the solvent. All the derived PPQ ultrafine non-woven fibrous membranes maintained good structure integrity after hydrolysis aging either at room temperature (25 oC) for 72 h or at refluxing temperature (100 oC) for 24 h in an aqueous sodium hydroxide (NaOH) solution at a solid content of 20 wt%. Comparatively, the polyimide (PI) reference electrospun membrane (PI-ref) derived from 1,2,4,5- pyrromellitic anhydride (PMDA) and 4,4'-oxydianiline (ODA) lost its original structure only after boiling in the same NaOH solution within 3 h. In addition, the developed PPQ ultrafine non-woven fibrous membranes exhibited good thermal stability with the 5 % weight loss temperatures (T5%) higher than 555.0 oC in nitrogen and glass transition temperatures (Tg) in the range of 248.1-266.1 oC, respectively.

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  Cite this article

[IEEE Style]

C. Guo, L. Yin, J. Liu, X. Wang, N. Zhang, L. Qi, Y. Zhang, X. Wu, X. Zhang, "Electrospun Polyphenylquinoxaline Ultrafine Non-woven Fibrous Membranes with Excellent Thermal and Alkaline Resistance: Preparation and Characterization," Fibers and Polymers, vol. 20, no. 12, pp. 2485-2492, 2019. DOI: 10.1007/s12221-019-9349-2.

[ACM Style]

Chen-yu Guo, Lu-meng Yin, Jin-gang Liu, Xin-ke Wang, Na Zhang, Lin Qi, Yan Zhang, Xiao Wu, and Xiu-min Zhang. 2019. Electrospun Polyphenylquinoxaline Ultrafine Non-woven Fibrous Membranes with Excellent Thermal and Alkaline Resistance: Preparation and Characterization. Fibers and Polymers, 20, 12, (2019), 2485-2492. DOI: 10.1007/s12221-019-9349-2.

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pISSN : 1229 - 9197
eISSN : 1875 - 0052

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