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3-Dimensional Porous Nanocomposite Scaffolds Based on Cellulose Nanofibers for Cartilage Tissue Engineering
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Educell Ltd., Prevale 9, Trzin.
Educell Ltd., Prevale 9, Trzin.
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2016 (English)In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, Vol. 6, no 8, 5999-6007 p.Article in journal (Refereed) Published
Abstract [en]

Fully bio-based three-dimensional porous scaffold for cartilage repair was prepared via freeze-drying where cellulose nanofibers, which were cytocompatible, were used as mechanical reinforcement (70-90 wt%) in a matrix of gelatin and chitosan (9:1) and crosslinked using genipin. Morphology studies showed that the scaffolds had interconnected pores with favorable pore diameters (< 250 μm) for cell growth. Compression modulus of the scaffolds (1-3 MPa) at room conditions was in the range for natural cartilage and decreased significantly (0.03-0.05 MPa) in phosphate buffered saline (PBS) at 37°C. The high PBS uptake shown by the scaffolds (< 3000 wt%) was attributed to liquid trapped in the pores during immersion in PBS. Furthermore, the scaffolds showed good cytocompatibility towards chondrocytes, which attached and proliferated properly. The scaffolds are considered to have potential in cartilage tissue engineering due to high porosity (≈ 95%) and good mechanical performance that promote cell attachment and extracellular matrix (ECM) production.

Place, publisher, year, edition, pages
2016. Vol. 6, no 8, 5999-6007 p.
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-14773DOI: 10.1039/c5ra27246gLocal ID: e329b88d-c446-43d6-ae32-ad7c516c5318OAI: oai:DiVA.org:ltu-14773DiVA: diva2:987746
Note
Validerad; 2016; Nivå 2; 20140922 (narnas)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Publisher's full texthttp://pubs.rsc.org/en/content/articlepdf/2016/ra/c5ra27246g

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