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Nanocellulose for renewable smart materials
J. Kim, L. Zhai, S. Mun, H.C. Kim, J.W. Kim
Inha University, KR
Keywords: renewable material, cellulose, smart materials
Summary:
Cellulose is one of abundant renewable biomaterials in the world. In nature, cellulose is produced from plants by biosynthesis, forming microfibrils which in turn aggregate to form cellulose fibers. Using new effective methods these fibrils can be disintegrated from the fibers to nanosized materials, so called cellulose nanocrystal (CNC) and cellulose nanofiber (CNF), which can be a new building block of new materials. The CNC and CNF have extremely good strength properties, dimensional stability, thermal stability and good optical properties on top of their renewable behavior. The bio-based one dimensional CNCs and CNF are versatile materials since it can be applied in many different fields, for example, new lightweight composite materials to be used in transport, electronic applications but they can also be used in food, cosmetics, medicine, packaging and many other applications. This presentation reports recent advancement of cellulose nanocrystals and cellulose nanofibers, followed by their possibilities as well as challenges for renewable smart materials. Natural behaviors, extraction, modification of cellulose nanocrystals and fibers are explained and their synthesis with nanomaterials is introduced, which is necessary to meet the technological requirements for smart materials. Also, its possibilities and challenges for smart materials are addressed.
