Bioinspired lubricating films of cellulose nanofibrils and hyaluronic acid

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Valle-Delgado, Juan Jose Johansson, Leena-Sisko Österberg, Monika 2017-01-19T10:51:18Z 2016-02-01
dc.identifier.citation Valle-Delgado , J J , Johansson , L-S & Österberg , M 2016 , ' Bioinspired lubricating films of cellulose nanofibrils and hyaluronic acid ' COLLOIDS AND SURFACES B: BIOINTERFACES , vol 138 , pp. 86-93 . DOI: 10.1016/j.colsurfb.2015.11.047 en
dc.identifier.issn 0927-7765
dc.identifier.issn 1873-4367
dc.identifier.other PURE UUID: 229c50a1-961a-4222-8bae-83d47c7a5d18
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE FILEURL:
dc.description.abstract The development of materials that combine the excellent mechanical strength of cellulose nanofibrils (CNF) with the lubricating properties of hyaluronic acid (HA) is a new, promising approach to cartilage implants not explored so far. A simple, solvent-free method to produce a very lubricating, strong cellulosic material by covalently attaching HA to the surface of CNF films is described in this work. A detailed analysis of the tribological properties of the CNF films with and without HA is also presented. Surface and friction forces at micro/nanoscale between model hard surfaces (glass microspheres) and the CNF thin films were measured using an atomic force microscope and the colloid probe technique. The effect of HA attachment, the pH and the ionic strength of the aqueous medium on the forces was examined. Excellent lubrication was observed for CNF films with HA attached in conditions where the HA layer was highly hydrated. These results pave the way for the development of new nanocellulose-based materials with good lubrication properties that could be used in biomedical applications. (C) 2015 Elsevier B.V. All rights reserved. en
dc.format.extent 8
dc.format.extent 86-93
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries COLLOIDS AND SURFACES B: BIOINTERFACES en
dc.relation.ispartofseries Volume 138 en
dc.rights openAccess en
dc.subject.other 216 Materials engineering en
dc.title Bioinspired lubricating films of cellulose nanofibrils and hyaluronic acid en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Forest Products Technology
dc.subject.keyword Cellulose nanofibrils
dc.subject.keyword Hyaluronic acid
dc.subject.keyword Thin films
dc.subject.keyword Lubrication
dc.subject.keyword Colloid probe technique
dc.subject.keyword 216 Materials engineering
dc.identifier.urn URN:NBN:fi:aalto-201701191116
dc.identifier.doi 10.1016/j.colsurfb.2015.11.047 info:eu-repo/date/embargoEnd/2017-03-01

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