Structure and Properties of Cellulose Nanocomposite Films Containing Melamine Formaldehyde
2007 (English)In: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 106, no 4, 2817-2824 p.Article in journal (Refereed) Published
Films of high Young's modulus and low density are of interest for application as loudspeaker membranes. In the present study nanocomposite films were prepared from microfibrillated cellulose (MFC) and from MFC in combination with melamine formaldehyde (MF). The prepared materials were Studied with respect to structure as well as physical and mechanical properties. Studies in SEM and calculation of porosity showed that these materials have a dense paper-like structure. The moisture sorption isotherms were measured and showed that Moisture content decreased in the presence of ME Mechanical properties were studied by dynamical mechanical thermal measurements as well as by tensile tests. Cellulose films showed an average Young's modulus of 14 GPa while the nanocomposites showed an average Young's modulus as high as 16.6 GPa and average tensile strength as high as 142 M.Pa. By controlling composition and structure, the range of properties of these materials can extend the property range available for existing materials. The combination of comparatively high mechanical damping and high sound propagation velocity is of technical interest.
Place, publisher, year, edition, pages
2007. Vol. 106, no 4, 2817-2824 p.
microfibrillated cellulose; biofibers; cellulose nanocomposites; mechanical properties; loudspeaker membrane
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-7909DOI: 10.1002/app.26946ISI: 000249590700086ScopusID: 2-s2.0-35148848649OAI: oai:DiVA.org:kth-7909DiVA: diva2:13079
QC 201008102008-01-212008-01-212010-08-10Bibliographically approved