Factors affecting the mechanical and geometrical properties of electrostatically flocked pure chitosan fiber scaffolds

Author:

Tonndorf Robert1,Gossla Elke2,Kocaman Recep Türkay1,Kirsten Martin1,Hund Rolf-Dieter1,Hoffmann Gerald1,Aibibu Dilbar1,Gelinsky Michael2,Cherif Chokri1

Affiliation:

1. Institute of Textile Machinery and High Performance Material Technology, Technische Universität Dresden, Germany

2. Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital and Medical Faculty, Technische Universität Dresden, Germany

Abstract

The field of articular cartilage tissue engineering has developed rapidly, and chitosan has become a promising material for scaffold fabrication. For this paper, wet-spun biocompatible chitosan filament yarns were converted into short flock fibers and subsequently electrostatically flocked onto a chitosan substrate, resulting in a pure, highly open, porous, and biodegradable chitosan scaffold. Analyzing the wet-spinning of chitosan revealed its advantages and disadvantages with respect to the fabrication of the fiber-based chitosan scaffolds. The scaffolds were prepared using varying processing parameters and were analyzed in regards to their geometrical and mechanical properties. It was found that the pore sizes were adjustable between 65 and 310 µm, and the compressive strength was in the range 13–57 kPa.

Publisher

SAGE Publications

Subject

Polymers and Plastics,Chemical Engineering (miscellaneous)

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