Elektro-eğirme Yöntemiyle MWCNT Takviyeli Polivinil Alkol Nanoelyaf Keçelerin Mekanik Özellikleri

Bu çalışmada elektro-eğirme metodu kullanılarak ağırlıkça % 1, 3 ve 5 oranlarında çok cidarlı karbon nanotüp takviyeli/takviyesiz polivinilalkol (PVA) nanoelyaf keçelerin üretimi gerçekleştirilmiştir. Takviyeli/takviyesiz üretilen nanoelyaf keçeler, statik yükleme altında çekme deneyleri yapılarak çekme dayanımı, elastiklik modülü ve uzama miktarları incelenmiştir. % 1 MWCNT takviyeli PVA nanoelyaf keçe, sç, E ve toklukları PVA nanoelyaf keçe ile karşılaştırıldığında sırasıyla % 50, 88 ve 12 artış gözlenmiştir. Üretilen nanoelyaf keçelerin PVA ve MWCNT ile bir araya gelmesi ile oluşan sistemde meydana gelen kimyasal değişimleri ve etkileşimleri Fourier Dönüşümlü Kızılötesi Spektroskopisi (FT-IR) ve Diferansiyel Taramalı Kalorimetre (DSC) analizleri yapılmıştır. Ayrıca nanoelyaf keçelerin özelliklerinin belirlenmesinde takviyeli/takviyesiz PVA çözeltilerinin fiziksel özellikleri ve ağ yapılı polimerlerin yüzey gözenekliliğinin izlenebilmesi amacıyla taramalı elektron mikroskobu (SEM) görüntüleri de incelenmiştir.

Anahtar Kelimeler:

Elelktro-eğirme, Çok Cidarlı Karbon Nanotüp, Polivinilalkol, Nanoelyaf Keçeler

Mechanical Properties of MWCNT Reinforced Polyvinyl Alcohol Nanofiber Mats by Electrospinnig Method

In this study, the production of weight ratios of 1, 3 and 5 % multi-walled carbon nanotube reinforced / unreinforced polyvinyl alcohol (PVA) nanofiber mats was carried out by electrospinning method. Tensile strength, modulus of elasticity and elongation amounts were investigated by tensile tests under static loading with / without reinforced nanofiber mats. % 1 MWCNT reinforced PVA nanofiber mats, ç , E and toughness increased by 50, 88 and 12 %, respectively, when compared with PVA nanofiber mats. Fourier Transform Infrared Spectroscopy (FT-IR) and Differential Scanning Calorimetry (DSC) analyzes were performed on the chemical changes and interactions occurring in the system formed by combining the produced nanofiber mats with PVA and MWCNT. In addition, scanning electron microscope (SEM) images were also investigated to determine the physical properties of reinforced / unreinforced PVA solutions and to monitor the surface porosity of networked polymers at the specification of nanofiber mats.

Keywords:

Electro spun, Multi Wall Carbon Nanotubes, Polyvinyl Alcohol, Nanofiber Mats,

PDF

___

[1] Bajpai AK, Shukla SK, Bhanu S, Kankane S. "Responsive polymers in controlled drug delivery," Prog Polym Sci, 33(11), 1088-118, 2008.
[2] Mark JE. "Physical properties of polymers handbook," Springer; 2007.
[3] Erkendirci OF, Avci A, Ekrem M. "Investigation of the Fracture Behavior of Woven Fiber Glass-reinforced Low-density Polyethylene Composite," J Compos Mater, 44(23), 2697-709, 2010.
[4] Kessler MR. "Polymer Matrix Composites: A Perspective for a Special Issue of Polymer Reviews," Polym Rev, 52(3-4), 229-33, 2012.
[5] Kong CS, Lee TH, Lee KH, Kim HS. "Interference between the Charged Jets in Electrospinning of Polyvinyl Alcohol," J Macromol Sci B, 48(1), 77-91, 2009.
[6] Park JC, Ito T, Kim KO, Kim KW, Kim BS, Khil MS, et al. "Electrospun poly(vinyl alcohol) nanofibers: effects of degree of hydrolysis and enhanced water stability," Polym J, 42(3), 273-6, 2010.
[7] Gonzalez JS, Alvarez VA. "Mechanical properties of polyvinylalcohol/hydroxyapatite cryogel as potential artificial cartilage," Journal of the mechanical behavior of biomedical materials, 34, 47-56, 2014.
[8] Saghafi H, Zucchelli A, Palazzetti R, Minak G. "The effect of interleaved composite nanofibrous mats on delamination behavior of polymeric composite materials," Compos Struct, 109, 41-7, 2014.
[9] Li P, Qiao Y, Zhao LL, Yao DH, Sun HX, Hou YF, et al. "Electrospun PS/PAN fibers with improved mechanical property for removal of oil from water," Mar Pollut Bull, 93(1-2), 75-80, 2015.
[10] Ding B, Kim HY, Lee SC, Lee DR, Choi KJ. "Preparation and characterization of nanoscaled poly(vinyl alcohol) fibers via electrospinning," Fiber Polym, 3(2), 73-9, 2002.
[11] Carraher CE, Moore JA. "Modification of polymers," Springer Science & Business Media; 2012.
[12] Sun B, Long YZ, Zhang HD, Li MM, Duvail JL, Jiang XY, et al. "Advances in three-dimensional nanofibrous macrostructures via electrospinning," Prog Polym Sci, 39(5), 862-90, 2014.
[13] Ekrem M. "Fracture Behavior of Epoxy Adhesives Reinforced with Carbon Nanotubes and Polyvinyl Alcohol Nanofibers in Aluminum Joints," PhD Dissertation, Konya: Selcuk University; 2015.
[14] Guerrini LM, de Oliveira MP, Branciforti MC, Custodio TA, Bretas RES. "Thermal and Structural Characterization of Nanofibers of Poly(Vinyl Alcohol) Produced by Electrospinning," J Appl Polym Sci, 112(3), 1680-7, 2009.
[15] Deng JN, Zhang XQ, Wang K, Zou H, Zhang Q, Fu Q. "Synthesis and properties of poly(ether urethane) membranes filled with isophorone diisocyanate-grafted carbon nanotubes," J Membrane Sci, 288(1-2), 261-7, 2007.
[16] Naebe M, Lin T, Tian W, Dai LM, Wang XG. "Effects of MWNT nanofillers on structures and properties of PVA electrospun nanofibres," Nanotechnology, 18(22), 2007.
[17] Ramakrishna S. "An introduction to electrospinning and nanofibers," World Scientific; 2005.