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Izrada PCL/sepiolit kompozitnih nanovlakna
Fabrication of PCL/sepiolite composite nanofibers
Abstract
Cilj ovog rada bio je da se proizvede i karakteriše kompozitni nanovlaknasti materijal na bazi PCL-a koji sadrži različite koncentracije sepiolita (SEP). Koncentracija PCL polimera je održavana konstantnom na 10 tež%. Sepiolit je dodat u PCL rastvor u koncentracijama od 0, 0,5, 1,0, 1,5, 2,0 i 2,5 tež. % respektivno. Prvo su određena svojstva pripremljenih rastvora kao što su viskozitet, površinski napon i provodljivost. Rezultati svojstva rastvora su pokazali da je dodavanje SEP-a dovelo do povećanja vrednosti viskoziteta, provodljivosti i površinskog napona rastvora. Zatim je proizvodnja nanovlakna sprovedena metodom elektropredenja. Nakon toga, nanovlakna su morfološki okarakterisana SEM-EDS analizom. Rezultati analize su pokazali da su sva nanovlakna pokazala glatke strukture bez perli i ujednačene strukture. Pored toga, primećeno je da se prečnik vlakana smanjuje kako se koncentracija SEP povećava. EDS analiza je otkrila prisustvo magnezijuma (Mg) i silicijuma (Si) u nanovlaknima koja sadrže SEP. Uzimajući u obzir odlične karakteristike sepiolita kao što je biokompatibilnost i netoksičnost zajedno sa onima nanovlakna, smatra se da se proizvedeni nanovlakni materijal može koristiti u medicinskim aplikacijama kao što su zavoji rana, medicina, regeneracija kostiju.
Sažetak
In this study, it was aimed to produce and characterize PCL-based composite nanofibrous material containing various concentrations of sepiolite (SEP). The PCL polymer concentration was kept constant at 10 wt% in consideration. Sepiolite was added to the PCL solution at concentrations of 0, 0.5, 1.0, 1.5, 2.0, and 2.5 wt % respectively. Firstly, the properties of the prepared solutions such as viscosity, surface tension and conductivity were determined. The results of the solution properties indicated that the addition of SEP resulted in an increase in the viscosity, conductivity, and surface tension values of the solutions. Then, the nanofiber production was carried out via electrospinning method. Subsequently, the nanofibers were characterized morphologically by the SEMEDS analysis. The results of the analysis demonstrated that all nanofibers exhibited smooth, bead-free, and uniform structures. Additionally, the fiber diameter was observed to decrease as the SEP concentration increased. The EDS analysis revealed the presence of magnesium (Mg) and silicon (Si) in nanofibers containing SEP. Considering the excellent features of sepiolit such as being biocompatible and non-toxic along with those of nanofibers, it is thought that the nanofibrous material produced can be used in medical applications such as wound dressing, medicine, bone regeneration.
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