File(s) under permanent embargo
Carbon Nanotube Biofiber Formation in a Polymer-Free Coagulation Bath
journal contribution
posted on 2008-01-01, 00:00 authored by Joselito RazalJoselito Razal, K Gilmore, G WallaceA novel solution spinning method to produce highly conducting carbon nanotube (CNT) biofibers is reported. In this process, carbon nanotubes are dispersed using biomolecules such as hyaluronic acid, chitosan, and DNA, and these dispersions are used as spinning solutions. Unlike previous reports in which a polymer binder is used in the coagulation bath, these dispersions can be converted into fibers simply by altering the nature of the coagulation bath via pH control, use of a crosslinking agent, or use of a biomolecule-precipitating solvent system. With strength comparable to most reported CNT fibers to date, these CNT biofibers demonstrate superior electrical conductivities. Cell culture experiments are performed to investigate the cytotoxicity of these fibers. This novel fiber spinning approach could simplify methodologies for creating electrically conducting and biocompatible platforms for a variety of biomedical applications, particularly in those systems where the application of an electrical field is advantageous?for example, in directed nerve and/or muscle repair.
History
Journal
Advanced Functional MaterialsVolume
18Issue
1Pagination
61 - 66Publisher
Wiley-VCH VerlagLocation
Weinheim, GermanyPublisher DOI
ISSN
1616-301XLanguage
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2008, Wiley-VCH Verlag.Usage metrics
Read the peer-reviewed publication
Categories
Keywords
Biomedical applicationsCarbon nanotubesConductivityFibersSingle-walled carbon nanotubesSolution processingScience & TechnologyPhysical SciencesTechnologyChemistry, MultidisciplinaryChemistry, PhysicalNanoscience & NanotechnologyMaterials Science, MultidisciplinaryPhysics, AppliedPhysics, Condensed MatterChemistryScience & Technology - Other TopicsMaterials SciencePhysicsCOMPOSITE FIBERSHYALURONIC-ACIDSINGLESPUNORGANIZATIONDISPERSIONSBEHAVIORARRAYSYARNS