Responsive Nanocellulose Composites

N. E. MARCOVICH; M.L. AUAD; ARANGUREN, MIRTA I.

Handbook of Green Materials; Processing Technologies, Properties and Applications

Editorial World Scientific

Lugar: NY; Año: 2014; p. 181 - 199

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(Hardcover) ISBN: 978-981-4566-47-6 (ebook) ISBN: 978-981-4566-46-9 (ebook - Institutions Only. The outstanding mechanical properties of nanocellulose, added to its wide availability, biodegradability, and wide number of alternatives for chemical modification, have been the driving force for its utilization as reinforcement in responsive polymers. In particular, segmented polyurethanes (SPUs) with shape memory behavior have been utilized in the production of nanocellulose-reinforced responsive composites. Additionally, the hygroscopic nature of cellulose has led to the investigation of nanocomposites with water-responsive behavior, displaying a dramatic reduction of the material rigidityin the presence of the liquid or switchable swelling behavior. More recent developments in the area of nanocellulose responsive materials were addressed to growing active polymers or functional nanoparticles on the surface of cellulosic crystals or fibrillar structures. These developments are opening new roads for activating different material responses by indirect or non-contacting methods.