Nanotechnology Now - Press Release: "Scientists Find New Method to Produce Stronger Nanofibers"

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Abstract:
Iranian researchers at Gilan University achieved the technical know-how for manufacturing multilayered materials containing nanofibers.

Scientists Find New Method to Produce Stronger Nanofibers

Tehran, Iran | Posted on July 2nd, 2011

"An untextured layer of nanofibers of unique properties like high surface to volume ratio, very little pore size, and high porosity is formed by means of electrofining. The main drawback, however, is its low strength so that it's not possible to use it directly as filter or clothing", Dr. Akbar Khodaparast Haqqi, professor at textile department, Gilan University, said.

"Our researchers decided to join the nanofiber layer to the desired beds by special glue through layer multiplication and produce a composite containing this effective layer. It preserves nanofiber layer against stresses or strikes," he added.

Elaborating on the synthesis procedure, he said, "For the construction of nanofiber layer, we first prepared a polymeric solution of polyacrylonitrile. Then, nanofiber layer was coated on a layer of span bond by electrofining."

"These three layers were placed between two cotton cloths so that the five layers were arranged in cloth-span bond-nanofiber-span bond-cloth order. These layers lastly underwent hot press operation at different temperatures, times, and pressures to have span bond layer melted and act as a glue in joining the nanofiber layer to the cloth."

He reiterated that his research team "managed to represent images of nanofiber layers after the multilayer synthesis by an inventive method".

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