Mechanical characteristics of nanocellulose-PEG bionanocomposite wound dressings in wet conditions
2017 (English)In: Journal of The Mechanical Behavior of Biomedical Materials, ISSN 1751-6161, E-ISSN 1878-0180, Vol. 69, 377-384 p.Article in journal (Refereed) Published
Wood nanocellulose has been proposed for wound dressing applications partly based on its capability to form translucent films with good liquid absorption capabilities. Such properties are adequate for non-healing and chronic wounds where adequate management of exudates is a requirement. In addition, the translucency will allow to follow the wound development without the necessity to remove the dressing from the wound. Understanding the mechanical properties of nanocellulose films and dressings are also most important for tailoring optimizing wound dressing structures with adequate strength, conformability, porosity and exudate management. Mechanical properties are usually assessed in standard conditions (50% relative humidity, RH), which is not relevant in a wound management situation. In this study we have assessed the mechanical properties of three nanocellulose grades varying in the degree of nanofibrillation. The effect of nanofibrillation and of polyethylene glycol (PEG) addition, on the tensile strength, elongation and elastic modulus were assessed after 24Â h in water and in phosphate-buffered saline (PBS). The results reveal the behavior of the nanocellulose dressings after wetting and shed light into the development of mechanical properties in environments, which are relevant from a wound management point of view. Â© 2017 Elsevier Ltd
Place, publisher, year, edition, pages
2017. Vol. 69, 377-384 p.
Bionanocomposites, Mechanical properties, Nanocellulose, Plasticizer
Nano Technology Medical Materials
IdentifiersURN: urn:nbn:se:ri:diva-29122DOI: 10.1016/j.jmbbm.2017.01.049ScopusID: 2-s2.0-85012277556OAI: oai:DiVA.org:ri-29122DiVA: diva2:1081702
ProjectsNanoHeal: Bio-compatible cellulose nanostructures for advanced wound healing applications.
cited By 02017-03-142017-03-142017-03-14Bibliographically approved