Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Ambient temperature


Effects of Ambient Temperature and Needle to Collector Distance on PVA Nanofibers Diameter Obtained From Electrospinning Technique

A.R. Jabur; L.K. Abbas; S.M. Muhi Aldain

Engineering and Technology Journal, 2017, Volume 35, Issue 4, Pages 340-347

Electro spinning is regarded as an active technique for producing biomimetic scaffolds used in tissue engineering applications from synthetic and natural polymers. The technique used in this research gives the ability to produce bio-polymeric materials for fabricating engineered scaffold tissues by preparing (PVA) solution. Ambient temperature at (25, 30, 35, 40, 45 and 50 °C) and needle tip to collector distance with (4, 8, 12, 15, 20 and 22 cm) were studied to optimize the electrospun fibers (size and shape). The electrospun fibers topography were studied by scanning electron microscopy (SEM). Measurements were done for each (SEM) images and lead to determine the mean diameters size of the obtained fibers. Results showed that the average fiber diameter of the (PVA) electrospun decreased to the range (220–500 nm) without creation of any beads, fibers diameter decreased as ambient temperature increase to certain temperature at (45 °C) and retrain to increase at (50 °C) temperature, while increasing the distance of the needle tip to collector decrease the mean nanofiber diameter from (875 nm) at (4 cm) to (600 nm) at (22 cm).

Ambient Temperature Affect the Pore size of PVA Nanofibers Tissues

Akram R. Jabur; Laith K. Abbas; Safa M. Muhi Aldain

Engineering and Technology Journal, 2015, Volume 33, Issue 6, Pages 1040-1047

Electrospinning has recently emerged as a leading technique for generating biomimetic scaffolds made of synthetic and natural polymers for tissue engineering applications. PVA was dissolved in distilled water at concentration (10% wt). PVA 10% DW solution was prepared as biopolymeric materials for fabricating tissue engineered scaffolds by electrospinning, varying ambient temperature (25, 30, 35, 40, 45 and 50) ͦ C andinvestigated the ambient temperature effect on tissue nanofibers pore size. Scanning electron microscopy was utilized to profile the topography of individual electrospun fibers. Statistical measurements for each SEM images lead to measure the mean poresize of tissue obtained. Our results indicate that the average poresize of PVA fibertisues could be scaled down to mean values (132-300)nm smooth nanofibers without any beads, poresize decreased as ambient temperature increase to certain temperature at (40 °C) and retrain increasing at (45 and 50) °C temperature.