اندازه‌گیری تخلخل وب نانوالیاف PA6 الکتروریسی شده به روش هیبریدی بعد از انحلال جزء PVA و تاثیر برخی متغیرها بر تخلخل

نوع مقاله : پژوهشی اصیل

نویسندگان

1 دانشکده مهندسی نساجی، دانشگاه صنعتی امیرکبیر

2 عضو هیات علمی دانشکده مهندسی نساجی دانشگاه صنعتی امیرکبیر

چکیده
تخلخل وب‌های الکتروریسی شده، پارامتر بسیار مهمی در بسیاری از زمینه‌های کاربردی نانوالیاف می‌باشد. به همین منظور در این تحقیق ابتدا اثر پارامترهای تاثیر گذار، غلظت محلول پلیمری و نرخ تغذیه، بر قطر نانوالیاف پلی وینیل الکل که به عنوان جزء حل شونده در وب هیبریدی نهایی در نظر گرفته شده بود، مورد مطالعه قرار گرفت. در ادامه وب هیبریدی پلی آمید 6/ پلی وینیل الکل به روش الکتروریسی همزمان دو سویه تهیه شد، سپس مورفولوژی، قطر نانوالیاف و اندازه متوسط حفرات سطحی قبل و پس از حذف پلی وینیل الکل، با استفاده از تصاویر میکروسکوپ الکترونی روبشی با یکدیگر مقایسه شدند. جهت اندازه‌گیری تخلخل وب‌های الکتروریسی شده، از سه رابطه‌ی ارائه شده در مراجع که بر اساس روش‌های اندازه‌گیری ساده و کاربردی بنا شده‌اند، استفاده شد. در پایان پس از انتخاب بهترین روش اندازه گیری تخلخل نانوالیاف، نشان داده شد که با حذف یکی از اجزای وب هیبریدی میزان تخلخل وب الکتروریسی شده 10 تا 15%کاهش پیدا کرده و به حدود 70% می‌رسد. اندازه‌ی حفرات وب‌ها نیز پس از حذف یک جزء، به میزان 30 تا 58 درصد نسبت به نمونه هیبریدی کاهش یافت.

کلیدواژه‌ها

موضوعات


عنوان مقاله English

Measuring the porosity of PA6 nanofibers prepared via hybrid electrospinning after the dissolution of PVA component and effect of some parameters on it

نویسندگان English

Sedigheh Aghayari 1
Mohammad Reza Mohaddes Mojtahedi 1
محمدعلی توانایی 2
Zahra Esmaeelzadeh 1
1 Textile Eng. Dpt., Amirkabir Univ. Technology
2 Textile Eng. Dept., Amirkabir University of Technology
چکیده English

The porosity of electrospun nanofibers web is a significant parameter affecting various areas of nanofibers applications. Thus, at first, the effect of most effective parameters, the concentration of polymer solution and flow rate, on the diameter of polyvinyl alcohol nanofibers, as a dissolving component, were investigated. Afterward, the hybrid web of polyamide 6/polyvinyl alcohol (PA/P) was prepared via a two-sided dual-nozzles electrospinning method. The morphology, diameter, pore size of nanofibers web and the effect of dissolving constituent were studied based on images of the scanning electron microscope. To measuring the porosity of nanofibrous webs, three practical and straightforward methods that have been proposed in the literature were utilized. It was observed that when one component was dissolved, the diameter of the resultant web was decreased, and the porosity has been reduced to about 70% based on the best selected method of porosity. Additionally, the average pore size of electrospun PA6 webs has been decreased about 30-58% relative to the original hybrid webs.

کلیدواژه‌ها English

Porosity
Electrospinning
Nanofiber
hybrid nanofibers
two-sided dual-nozzles electrospinning
[1] M. W. Frey and L. Li, “Electrospinning and Porosity Measurements of Nylon-6/Poly(ethylene oxide) Blended Nonwovens,” J. Eng. Fiber. Fabr., vol. 2, no. 1, Mar. 2007.
[2] S. S. Sreedhara and N. R. Tata, “A novel method for measurement of porosity in nanofiber mat using pycnometer in filtration,” J. Eng. Fiber. Fabr., vol. 8, no. 4, pp. 132–137, 2013.
[3] J. Xue, T. Wu, Y. Dai, and Y. Xia, “Electrospinning and electrospun nanofibers: Methods, materials, and applications,” Chemical Reviews, vol. 119, no. 8. American Chemical Society, pp. 5298–5415, 24-Apr-2019.
[4] L. Lou, R. J. Kendall, E. Smith, and S. S. Ramkumar, “Functional PVDF/rGO/TiO2 nanofiber webs for the removal of oil from water,” Polymer (Guildf)., vol. 186, p. 122028, 2020.
[5] F. Yalcinkaya, B. Yalcinkaya, and J. Hruza, “Electrospun Polyamide-6 Nanofiber Hybrid Membranes for Wastewater Treatment,” Fibers Polym., vol. 20, no. 1, pp. 93–99, 2019.
[6] A. Cipitria, A. Skelton, T. R. Dargaville, P. D. Dalton, and D. W. Hutmacher, “Design, fabrication and characterization of PCL electrospun scaffolds - A review,” J. Mater. Chem., vol. 21, no. 26, pp. 9419–9453, 2011.
[7] H. Bagheri, O. Rezvani, S. Zeinali, S. Asgari, T. G. Aqda, and F. Manshaei, “Electrospun nanofibers,” Solid-Phase Extr., pp. 311–339, 2019.
[8] V. Karageorgiou and D. Kaplan, “Porosity of 3D biomaterial scaffolds and osteogenesis,” Biomaterials, vol. 26, no. 27, pp. 5474–5491, 2005.
[9] A. Jena and K. Gupta, “Liquid Extrusion Techniques for Pore Structure Evaluation of Nonwovens,” Int. Nonwovens J., vol. os-12, no. 3, pp. 1558925003os–12, Sep. 2003.
[10] P. R. Cortez Tornello, P. C. Caracciolo, T. R. Cuadrado, and G. A. Abraham, “Structural characterization of electrospun micro/nanofibrous scaffolds by liquid extrusion porosimetry: A comparison with other techniques,” Mater. Sci. Eng. C, vol. 41, pp. 335–342, 2014.
[11] M. Ziabari, V. Mottaghitalab, and A. K. Haghi, “Evaluation of electrospun nanofiber pore structure parameters,” Korean J. Chem. Eng., vol. 25, no. 4, pp. 923–932, 2008.
[12] A. Vitale, G. Massaglia, A. Chiodoni, R. Bongiovanni, C. F. Pirri, and M. Quaglio, “Tuning Porosity and Functionality of Electrospun Rubber Nanofiber Mats by Photo-Crosslinking,” ACS Appl. Mater. Interfaces, vol. 11, no. 27, pp. 24544–24551, 2019.
[13] B. Tarus, N. Fadel, A. Al-Oufy, and M. El-Messiry, “Effect of polymer concentration on the morphology and mechanical characteristics of electrospun cellulose acetate and poly (vinyl chloride) nanofiber mats,” Alexandria Eng. J., vol. 55, no. 3, pp. 2975–2984, 2016.
[14] A. Haider, S. Haider, and I. K. Kang, “A comprehensive review summarizing the effect of electrospinning parameters and potential applications of nanofibers in biomedical and biotechnology,” Arab. J. Chem., vol. 11, no. 8, pp. 1165–1188, 2018.
[15] X. Li et al., “Polymer electrolytes based on an electrospun poly(vinylidene fluoride-co-hexafluoropropylene) membrane for lithium batteries,” J. Power Sources, vol. 167, no. 2, pp. 491–498, 2007.
[16] S. S. Shahrabi, J. Barzin, and P. Shokrollahi, “Blood cell separation by novel PET/PVP blend electrospun membranes,” Polym. Test., vol. 66, no. August 2017, pp. 94–104, 2018.
[17] M. Li, W. Tao, S. Lu, and C. Zhao, “Porous 3-D scaffolds from regenerated Antheraea pernyi silk fibroin,” Polym. Adv. Technol., vol. 19, no. 3, pp. 207–212, 2008.
[18] A. K. Aljehani, M. A. Hussaini, M. A. Hussain, N. S. Alothmany, and R. W. Aldhaheri, “Effect of electrospinning parameters on nanofiber diameter made of poly (vinyl alcohol) as determined by Atomic Force Microscopy,” in Middle East Conference on Biomedical Engineering, MECBME, 2014, pp. 379–381.
[19] V. Beachley and X. Wen, “Effect of electrospinning parameters on the nanofiber diameter and length,” Mater. Sci. Eng. C, vol. 29, no. 3, pp. 663–668, Apr. 2009.
[20] X. Zhu, W. Cui, X. Li, and Y. Jin, “Electrospun fibrous mats with high porosity as potential scaffolds for skin tissue engineering,” Biomacromolecules, vol. 9, no. 7, pp. 1795–1801, 2008.