Investigation of Morphological and Mechanical Properties of PVA/ Aloe barbadensis and PEO/Chitosan Blended Nanofibrous Structures Fabricated by Dual Electrospinning System
Year 2014,
Volume: 14 Issue: 1, 1 - 6, 01.04.2014
Ramazan Erdem
Erhan Sancak
Abstract
Chitosan (CS)/Polyethylene oxide (PEO) and Polyvinyl alcohol (PVA)/ Aloe vera (AVG) based electrospun nanofibers were gathered together by dual electrospinning system. Properties of blended solutions for electrospinning were investigated by measuring viscosity, conductivity and pH values. Morphological characteristics of the nanofibers were analyzed by Scanning Electron Microscopy (SEM). Beadless and uniform nanofibers were obtained through the electrospinning process and the diameters of the fibers were ranged from 72±15 to 115±41 nm. Blended nanofibers were compared to each other in terms of tensile strength and elongation at break results. Our experiments proved that Polyvinyl alcohol (PVA)/ Aloe vera (AVG) based electrospun nanofibers exhibited greater tensile strength and elongation at break compared with the Chitosan (CS)/Polyethylene oxide (PEO) based electrospun nanofibers. © Afyon Kocatepe Üniversitesi
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İkili Besleme Ünitesi Sistemi ile Elektroçekimi Gerçekleştirilen PVA/ Aloe barbadensis ve PEO/Kitosan Bazlı Nanolifli Yapıların Morfolojik ve Mekanik Özelliklerinin İncelenmesi
Year 2014,
Volume: 14 Issue: 1, 1 - 6, 01.04.2014
Ramazan Erdem
Erhan Sancak
Abstract
Elektroçekim tekniği kullanılarak elde edilen Kitosan (CS)/Polietilen oksit (PEO)ve Polivinil alkol (PVA)/ Aloe barbadensis (AVG) bazlı nanolifler, ikili besleme ünitesi sistemi ile birleştirilerek nanolif bazlı kompozit yapılar meydana getirilmiştir. Elektroçekim öncesi hazırlanan karışım çözeltilerinin özellikleri viskozite, iletkenlik ve pH ölçümleri ile tayin edilmiştir. Nanolifli yapıların morfolojik özellikleri ise SEM analizi ile belirlenmiştir. Düzgün ve hatasız olarak elde edilen nanoliflerin incelikleri 72±15 nm ile 115±41 nm aralığında değişim göstermiştir. Nanolifli yapılar, birbirleri ile mukavemet ve uzama değerleri baz alınarak karşılaştırılmıştır. PVA oranı yüksek karışımlardan elde edilen nanolifli yapıların, kitosan oranı yüksek karışımlardan elde edilen nanoliflere göre daha mukavim ve esnek olduğu görülmüştür
References
- Chen, Z., Mo, X., He, C. and Wang, H., 2008. Intermolecular interactions in electrospun collagen– chitosan Polymers, 72, 410–418. nanofibers. Carbohydrate
- Doshi, J. and Reneker, D.H., 1995. Electrospinning process and applications of electrospun fibers. Journal of Electrostatics, 35, 151–156.
- Erdem, R., 2013. Nanolif bazlı yara örtüsü yüzeyi geliştirilmesi. Doktora Tezi, Marmara Üniversitesi Fen Bilimleri Enstitüsü, İstanbul, 174.
- Hayati, I., Bailey, A.I. and Tadros, T.F., 1987. Investigations electrohydrodynamic spraying of liquids. 1. Effect of electricfield and the environment on pendant drops and factors affecting the formation of stable jets and atomization. Journal of Colloid and Interface Science, 117, 205–221. the mechanisms of
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- Lee, J.S., Choi, K.H., Ghim, H.D., Kim, S.S., Chun, D.H., Kim, H.Y. and Lyoo, W.S., 2004. Role of molecular weight of atactic poly(vinyl alcohol) (PVA) in the structure and properties of PVA nanofabric prepared by electrospinning. Journal of Applied Polymer Science, 93, 1638–1646.
- Park, K.R. and Nho, Y.C., 2003. Preparation and Characterization by Radiation of Poly(vinyl alcohol) and Poly(N-vinylpyrrolidone) Hydrogels Containing Aloe barbadensis. Journal of Applied Polymer Science, 90, 1477–1485.
- Son, Y.S., 2006. Rheological characterization of carbon nanotubes/poly(ethylene oxide) composites. Rheol Acta, 46, 231–238.
- Tikhonov, V.E., Stepnova, E.A., Babak, V.G., Yamskov, I.A., Guererro, J.P., Jansson, H.B., Llorca, L.V.L., Salinas, J., Gerasimenko, D.V., Avdienko, I.D. and Varlamov, V.P., 2006. Bactericidal and antifungal activities of a low molecular weight chitosan and its N-/2(3)-(dodec-2-enyl)succinoyl/-derivatives. Carbohydrate Polymers, 64, 66–72.
- Yang, D., Li, Y. and Nie J., 2007. Preparation of gelatin/PVA nanofibers and their potential application in controlled release of drugs. Carbohydrate Polymers, 69, 538–543.