Cross‐Linkable Modified Nanocellulose/Polyester Resin‐Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances

• DOI: 10.1002/mame.201700648
• Publication Date: 2018-05-28T08:27:38Z
• Authors: Jelena D. Rusmirović; Milica P. Rančić; Vladimir B. Pavlović; Vesna M. Rakić; Sanja Stevanović; Jasna Djonlagić; Aleksandar D. Mar...
• Keywords: Nanocellulose; Maleic anhydride

Abstract Unsaturated fatty acid (FA)–modified nanocellulose (m‐NC) shows potential application in improving mechanical properties of unsaturated polyester/m‐NC nanocomposites (UPe/m‐NC). A polyester matrix is obtained by polycondensation maleic anhydride and products poly(ethylene terephthalate) depolymerization with propylene glycol. Two methods NC modification are performed: direct esterification oleic acid, linseed, or sunflower oil FAs, esterification/amidation acid/ethylene diamine (MA/EDA) bridging group followed amidation methyl ester FAs. Increases stress at break the ranges from 148.8% to 181.4% 155.8% to193.0% for UPe/m‐NC composites loaded 1 wt% modified directly via MA/EDA cross‐linker, respectively, obtained. Results modeling tensile modulus, using Cox–Krenchel model, show good agreement experimentally data. The effect FAs' cross‐linking capabilities on dynamic‐mechanical thermal studied. Cross‐linking density, T g nanocomposite appropriate relation unsaturation extent/structure modification.