Bioinspired Interface Engineering for Moisture Resistance in Nacre-Mimetic Cellulose Nanofibrils/Clay Nanocomposites

• DOI: 10.1021/acsami.7b02177
• Publication Date: 2017-05-22T16:09:38Z
• Authors: Kun Yao; Shu Huang; Hu Tang; Yeping Xu; Gerd Buntkowsky; Lars A. Berglund; Qi Zhou
• Keywords: Nanocellulose

The interfacial adhesion design between "mortar" and "bricks" is essential for mechanical barrier performance of nanocellulose-based nacre-mimetic nanocomposites, especially at high moisture conditions. To address this fundamental challenge, dopamine (DA) has been conjugated to cellulose nanofibrils (CNFs) subsequently assembled with montmorillonite (MTM) generate layered nanocomposite films inspired by the strong mussel adhesive proteins inorganic surfaces under water. selective formation catechol/metal ion chelation hydrogen bonding interface MTM platelets CNFs bearing DA renders transparent properties, particularly humidity in wet state. Increasing amount on results nanocomposites increased tensile strength modulus, up 57.4 MPa 1.1 GPa, respectively, after are swollen also show excellent gas properties relative (95%), complementing multifunctional property profile.