In situ polymerization and characterization of elastomeric polyurethane-cellulose nanocrystal nanocomposites. Cell response evaluation
2013 (English)In: Cellulose (London), ISSN 0969-0239, E-ISSN 1572-882X, Vol. 20, no 4, 1819-1828 p.Article in journal (Refereed) Published
Polyurethane/Cellulose nanocrystal (CNC) nanocomposites have been prepared by means of in situ polymerization using CNCs as precursors of polyurethane chains. Thermal, mechanical and morphological characterization has been analyzed to study the effect of CNC on the micro/nanostructure, which consisted of individualized nanocellulose crystallites covalently bonded to hard and soft segments of polyurethane. The incorporation of low CNC content led to a tough material whereas higher amount of CNC provoked an increase in soft and hard segments crystallization phenomenon. Moreover, from the viewpoint of polyurethane and polyurethane nanocomposites applications focused on biomedical devices, biocompatibility studies can be considered necessary to evaluate the influence of CNC on the biological behaviour. SEM micrographs obtained from cells seeded on top of the materials showed that L-929 fibroblasts massively colonized the materials surface giving rise to good substrates for cell adhesion and proliferation and useful as potential materials for biomedical applications.
Place, publisher, year, edition, pages
2013. Vol. 20, no 4, 1819-1828 p.
Cellulose nanocrystals, Polyurethane, Biocompatibility, Atomic force microscopy
Paper, Pulp and Fiber Technology
IdentifiersURN: urn:nbn:se:kth:diva-132215DOI: 10.1007/s10570-013-9960-0ISI: 000322673000023ScopusID: 2-s2.0-84880977901OAI: oai:DiVA.org:kth-132215DiVA: diva2:659791
QC 201310282013-10-282013-10-242013-10-28Bibliographically approved