A High Strength Nanocomposite Based on Microcrystalline Cellulose and Polyurethane
2007 (English)In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 8, no 12, 3687-3692 p.Article in journal (Refereed) Published
A high-strength elastomeric nanocomposite has successfully been prepared by dispersing microcrystalline cellulose in a polyurethane matrix. The resulting nanocomposites show increased strain-to-failure in addition to increased stiffness and strength compared to the unfilled polyurethane. The optimal composite contained 5 wt % cellulose. The average true strength for this composition was 257 MPa, compared with 39 MPa for the neat polyurethane, and showed the highest strain-to-failure. The improvements of stiffness, strength, as well as strain-to-failure are believed to be due to good interaction, by both covalent and hydrogen bonds, between the polyurethane and the cellulose nanofibrils.
Place, publisher, year, edition, pages
2007. Vol. 8, no 12, 3687-3692 p.
Cellulosic resins; Covalent bonds; Elastomers; Hydrogen bonds; Microcrystals; Polymer matrix; Polyurethanes; Stiffness; Cellulose nanofibrils; Strain-to-failure
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-7907DOI: 10.1021/bm701061tISI: 000251547600001ScopusID: 2-s2.0-38049070254OAI: oai:DiVA.org:kth-7907DiVA: diva2:13077
QC 201008102008-01-212008-01-212010-08-10Bibliographically approved