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    Cellulose Nanomaterials: Plant‐based Nanoparticles Growing a Sustainable Future

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    Date
    2015-04-14
    Author
    Moon, Robert J.
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    Abstract
    Cellulose based materials (wood, cotton, etc.) have been used by our society as engineering materials for thousands of years and their use continues today as verified by the enormity of the world wide industries in forest products, paper, textiles, packaging, etc. A new family of cellulose based particles (Cellulose Nanomaterials) with new functionality and performance are being developed to further expand the use of renewable materials in the ever widening consumer products base. Cellulose nanomaterials (CNs) are nanoparticles extracted from a wide variety of source materials (e.g. trees. plants. algae, bacteria). These fibril-like particles (3-50 nm wide, 50-2000+ nm long) have a unique combination of characteristics: high mechanical properties, low coefficient of thermal expansion. high aspect ratio, and low density. The exposed -OH side groups on CN surfaces can be readily modified to achieve different surface properties, and have been used to adjust CN self-assembly and dispersion within a wide range of suspensions and matrix polymers, and to control interfacial properties in composites (e.g. CN-CN and CN-matrix). Also, CNs can potentially be produced at industrial size quantities and at low costs, and preliminary tests have shown low environmental, health and safety issues. Research in CNs has grown rapidly in the last few years in an ever growing application space, including but not limited to: reinforcing fillers for polymers, cements. fibers, transparent films, flexible transparent displays, biomedical implants, drug delivery, barrier films, separation membranes, batteries, supercapacitors, sensors, etc.
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    http://hdl.handle.net/1853/53312
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