دورية أكاديمية
Highly solvent-stable polyimide ultrafine fibrous membranes fabricated by a novel ultraviolet-assisted electrospinning technique via organo-soluble intrinsically negative photosensitive varnishes
| العنوان: | Highly solvent-stable polyimide ultrafine fibrous membranes fabricated by a novel ultraviolet-assisted electrospinning technique via organo-soluble intrinsically negative photosensitive varnishes |
|---|---|
| المؤلفون: | L. Qi, C. Y. Guo, M. G. Huangfu, Y. Zhang, L. Wu, X. X. Zhi, J. G. Liu, X. M. Zhang |
| المصدر: | eXPRESS Polymer Letters, Vol 15, Iss 1, Pp 72-87 (2021) |
| بيانات النشر: | Budapest University of Technology, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Materials of engineering and construction. Mechanics of materials LCC:Chemical technology |
| مصطلحات موضوعية: | polymer membranes, photosensitive polyimides, electrospinning, thermal stability, solvent resistance, Materials of engineering and construction. Mechanics of materials, TA401-492, Chemical technology, TP1-1185 |
| الوصف: | A novel fabrication methodology for polyimide (PI) UFMs based on soluble PIs with high solvent durability was developed. As fiber-forming agents, a series of intrinsically negative photosensitive polyimides (PSPIs) with solubility in organic solvents were synthesized by the one-step thermal polymerization of 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA) with three ortho-alkyl-substituted diamine monomers, namely, 3,3′,5,5′-tetramethyl-4,4′-diaminodiphenylmethane (TMMDA, for PI-1), 3,3′-dimethyl-5,5′-diethyl-4,4′-diaminodiphenylmethane (DMDEDA, for PI-2), and 3,3′,5,5′-tetraethyl-4,4′-diaminodiphenylmethane (TEMDA, for PI-3), respectively. Electrospun UFMs were prepared by both traditional electrospinning (PI UFMs) and the novel ultraviolet-assisted electrospinning (UVAES) method (PI-UV UFMs). The effects of the fabrication method on the physical and chemical properties of the electrospun UFMs were investigated systematically. High-efficiency photoinduced crosslinking reactions under ultraviolet (UV) radiation provided the PI-UV UFMs with considerable thermal dimensional stability with the 5% weight loss temperature over 440 °C. Meanwhile, the derived PI-UV UFMs showed excellent resistance against a polar aprotic solvent, N,N-dimethylacetamide (DMAc). |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1788-618X |
| Relation: | http://www.expresspolymlett.com/letolt.php?file=EPL-0010800&mi=cd; https://doaj.org/toc/1788-618X |
| DOI: | 10.3144/expresspolymlett.2021.8 |
| URL الوصول: | https://doaj.org/article/21ba7775d64e49368d27f4137c05c05c |
| رقم الأكسشن: | edsdoj.21ba7775d64e49368d27f4137c05c05c |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 1788618X |
|---|---|
| DOI: | 10.3144/expresspolymlett.2021.8 |