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Polyoxyethylene assisted electrospinning of nanofibers from calcium phosphate sol solution♣

K. STARBOVA1,* , E. KRUMOV1, D. KARASHANOVA1, N. STARBOV1

Affiliation

  1. Central Laboratory of Photoprocesses, Bulgarian Academy of Sciences Acad.Georgi Bonchev Str., Bl.109, 1113 Sofia, Bulgaria

Abstract

Non-woven mats comprised of calcium phosphate/polymer hybrid fibers with large aspect ratios and mean diameters in the nanosized range are synthesized, combining electrospinning and sol-gel techniques. High molecular weight polyoxyethylene and a sol from calcium and phosphorus organic precursors are used for preparation of the spinning solutions. The polymer/sol weight ratio, high tension and capillary tip to counter electrode (collector) distance are chosen as the processing parameters. A specially developed thermal procedure is applied in order to obtain polymer free fibers. Scanning electron imaging and wide angle X-ray diffraction are applied in order to follow the morphology and initial crystallization stages of the electrospun fibrous mats. Opportunities for designing a ceramic scaffold (network) built up of immobilized interconnected electrospun Ca-PO4 fibers with mean diameters in the 100 – 250 nm range is demonstrated. Conclusions for the significance of the electrospinning as a simple, versatile and cost effective synthesis technique for the development of hydroxyapatite based materials are outlined..

Keywords

Hydroxyapatite fibres, Electrospinning, Sol-gel, Calcium phosphate.

Submitted at: Aug. 27, 2024
Accepted at: Sept. 9, 2009

Citation

K. STARBOVA, E. KRUMOV, D. KARASHANOVA, N. STARBOV, Polyoxyethylene assisted electrospinning of nanofibers from calcium phosphate sol solution♣, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 9, pp. 1319-1322 (2009)