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In situ synthesis of conductive polypyrrole on electrospun cellulose nanofibers: scaffold for neural tissue engineering

Journal article
Authors Johannes Thunberg
Theodoros Kalogeropoulos
Volodymyr Kuzmenko
Daniel Hägg
Sara Johannesson
Gunnar Westman
Paul Gatenholm
Published in Cellulose
Volume 22
Issue 3
Pages 1459-1467
ISSN 0969-0239
Publication year 2015
Published at
Pages 1459-1467
Language en
Keywords Cellulose, Fiber, Polypyrrole, Electrospinning, Tissue engineering
Subject categories Textile, Rubber and Polymeric Materials

Abstract

This study reports the synthesis of conductive polypyrrole (PPy) on electrospun cellulose nanofibers. The cellulose nanofibers were electrospun via cellulose acetate and surface modified using in situ pyrrole polymerization. PPy adhered to the cellulose nanofiber surface as small particles and caused a 105 fold increase in conductivity compared to unmodified cellulose nanofibers. In addition, tests revealed no cytotoxic potential for the PPy coated cellulose nanofiber materials. In vitro culturing using SH-SY5Y human neuroblastoma cells indicated enhanced cell adhesion on the PPy coated cellulose material. SH-SY5Y cell viability was evident up to 15 days of differentiation and cells adhered to the PPy coated cellulose nanofibers and altered their morphology to a more neuron like phenotype.

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