Multifunctional colloidal nanofiber composites including dextran and folic acid as electro-active platforms

Zakir M O Rzayev; Ulviye Bunyatova; Murat Şimșek

doi:10.1016/j.carbpol.2017.02.100

Multifunctional colloidal nanofiber composites including dextran and folic acid as electro-active platforms

Carbohydr Polym. 2017 Jun 15:166:83-92. doi: 10.1016/j.carbpol.2017.02.100. Epub 2017 Feb 24.

Authors

Zakir M O Rzayev¹, Ulviye Bunyatova², Murat Şimșek³

Affiliations

¹ Institute of Science and Engineering, Division of Nanotechnology and Nanomedicine, Hacetttepe University, Beytepe, 06800 Ankara, Turkey. Electronic address: muratsimsek08@gmail.com.
² Department of Biomedical Engineering, Faculty of Engineering, Başkent University, Bağlıca, 06810 Ankara, Turkey.
³ Department of Biomedical Engineering, Faculty of Engineering, İnönü University, 44280 Malatya, Turkey.

PMID: 28385251
DOI: 10.1016/j.carbpol.2017.02.100

Abstract

This work presents the fabrication and characterization of novel colloidal multifunctional polymer nanofiber composites (NFCs) from water dispersion blends of intercalated silicate layered nanocomposites of poly (2-vinyl-N-pyrrolidone)/octadecyl amine-montmorillonite (ODA-MMT) and dextran/ODA-MMT as matrix and partner polymer intercalated nanocomposites in the presence of NaOH and folic acid (FA) as doping agents by green reactive electrospinning. Chemical and physical structures, surface morphology and electrical properties were investigated. Effects of matrix/partner polymer ratios, doping agents, absorption time of NaOH, and temperature on electrical parameters of NFCs were evaluated. The presence of FA and increasing dextran fraction in NFCs resulted in reducing fiber diameter and improving diameter distribution. High complexing behaviors of matrix/partner polymer chains, organoclay, FA, and NaOH significantly improved conductivity parameters, especially 5-min of absorption time (≈10^-2-10^-³Sm^-1). The conductivity of the samples decreased with increasing temperature. NFCs fabricated for the first time are promising candidates for various biomedical, electrochemical and electronic applications as electro-active platforms.

Keywords: Dextran; Electrical properties; Folic acid; Nanofiber composites; Organoclay; Poly(N-vinyl-2-pyrrolidone).