By a News Reporter-Staff News Editor at Science Letter -- Fresh data on Vinyl Compounds are presented in a new report. According to news reporting originating in Alexandria, Egypt, by NewsRx journalists, research stated, "Polyvinyl alcohol ( PVA) sheets based nanofibers were produced by electrospinning technique. Postheat treatment of the produced PVA sheets with temperatures both below and above Tg to improve the mechanical properties of this material is conducted."
The news reporters obtained a quote from the research from Materials Research Institute, "The morphology, microstructures, and thermal degradation of the nanofibers sheets produced were investigated using scanning electron microscopy (SEM), transmission electron microscope (TEM), and thermal gravimetric analysis (TGA). Produced nanofibers are compact, and entangled with each other, with diameters from around 150 to 210. Some mechanical characteristics of the successfully produced PVA sheets, and heat-treated, are then conducted and assessed employing uniaxial tensile tests at different speeds ranging from 1 mm/min to 100 mm/min. The tensile test results obtained show that the PVA sheets are strain rate sensitive with increasing strength as the speed (i.e., strain rate) increases. The yield tensile stress ranges from 2.411 to 6.981MPa, the ductility (i.e., elongation percent) from (SIC) 21 to 60%, and Young modulus ranges from 103 to 0.137 KPa."
According to the news reporters, the research concluded: "However, for heat- treated samples, it is found that the yield strength increases almost by (SIC) 35- 40% more than the values of untreated cases with values reaching up to about 3.627-9.63 MPa."
For more information on this research see: Post-Heat Treatment and Mechanical Assessment of Polyvinyl Alcohol Nanofiber Sheet Fabricated by Electrospinning Technique. International Journal of Polymer Science, 2014;():1-6. International Journal of Polymer Science can be contacted at: Hindawi Publishing Corporation, 410 Park Avenue, 15TH Floor, #287 Pmb, New York, NY 10022, USA. (Hindawi Publishing - www.hindawi.com; International Journal of Polymer Science - www.hindawi.com/journals/ijps/)
Our news correspondents report that additional information may be obtained by contacting M. Es-Saheb, Adv Technol & New Mat Res Inst, City Sci Res & Technol Applicat, Polymer Mat Res Department, Alexandria 21934, Egypt (see also Vinyl Compounds).
Keywords for this news article include: Egypt, Africa, Alkenes, Polyenes, Nanofiber, Alexandria, Hydrocarbons, Nanotechnology, Vinyl Compounds, Organic Chemicals, Polyvinyl Alcohol, Emerging Technologies
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