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POLİ (VİNİL ALKOL)/SODYUM ALGİNAT KARIŞIMLARINDAN ELEKTRO ÇEKİM YÖNTEMİ İLE ELDE EDİLEN NANOLİFLİ YÜZEYLERİN İNCELENMESİ

Investigation of Nanofibrous Mats Produced from Poly (vinyl alcohol)/Sodium Alginate Blends by Using Electrospinning Method

Journal Name:

  • Uludağ Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

Publication Year:

  • 2009

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
Electrospinning of a natural biyopolymer alginate which is produced from brown seaweeds is still a challenge. In this study, aqueous solutions of sodium alginate (with concentrations of 1% and 2%) were blended with aqueous solution of, a biocompatible, synthetic polymer, poly (vinyl alcohol) (with concentration of 9%). Nanofibrous mats from poly (vinyl alcohol)/sodium alginate solution blends were produced in different volume ratios. After the determination of solution properties such as viscosity, density, electrical conductivity, pH and surface tension, electrospun alginate nanofibers were analyzed by using Scanning Electron Microscope (SEM) and average fiber diameters were measured. So, relationship between solution properties and fiber diameters, surface properties were investigated. During experimental studies it was observed that solution blends which consisted of 1% sodium alginate solution could be electrospun more successfully. Also, beadless, uniform, smooth, ultrafine fibers from the 2/1 solution blends of 9% poly (vinyl alcohol) / 1% sodium alginate, which had high viscosity and pH, low electrical conductivity and surface tension values were produced.
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Abstract (Original Language): 
Kahverengi deniz yosunlarından elde edilen ve doğal bir biyopolimer olan alginatın elektro çekimindeki zorluklar henüz aşılamamıştır. Bu çalışmada, sodyum alginatın iki farklı konsantrasyondaki (%1 ve %2) sulu çözeltileri, biyouyumlu sentetik bir polimer olan poli (vinil alkol)’ün sulu çözeltisi ile karıştırılmıştır. Farklı hacim oranlarındaki poli (vinil alkol)/sodyum alginat karışım çözeltilerinden elektro çekim yöntemi ile nanolifli yüzeyler elde edilmiştir. Karışım çözeltilerine ait viskozite, yoğunluk, pH, elektrik iletkenliği ve yüzey gerilimi özellikleri tespit edildikten sonra elektro çekim yöntemi ile elde edilen yüzeyler, Taramalı Elektron Mikroskobu (SEM) ile analiz edilmiş, ortalama lif çapları hesaplanmıştır. Böylece, çözelti parametreleri ile nanolif çaplarının ve yüzey özelliklerinin ilişkilendirilmesi hedeflenmiştir. Gerçekleştirilen deneysel çalışma ile, sodyum alginatın %1’lik konsantrasyonunda daha başarılı elektro çekim sonuçları alındığı görülmüştür. Ayrıca, yüksek viskozite ve pH, düşük elektrik iletkenliği ve yüzey gerilimi değerleri ile dikkat çeken 2/1 karışım oranındaki %9 poli (vinil alkol) / %1 sodyum alginat çözeltisinin elektro çekiminden optimum sonuçların alındığı boncuksuz, üniform ve ultra ince nanolifler elde edilmiştir.
FULL TEXT (PDF): 
PDF icon sodyum-alginat-karisimlarindan-elektro-cekim-yontemi-ile-elde-edilen-nanolifli-yuzeylerin-incelenmesi.pdf
  • 1
159-172
  • Turkish

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