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X-ray diffraction as a measurement tool for biodegradability of cellulose nanocrystals.
Seehra MS; Stefaniak AB
Production and applications of cellulose nanomaterials. Postek M, Moon RJ, Rudie AW, Bilodeau MA, eds. Peachtree Corners, GA: TAPPI Press, 2013 Jun; :59-60
Parameters of X-ray diffraction (XRD) patterns of cellulose micro-crystals (CMC) and cellulose nanocryslals (CNC) exposed to artificial lung fluid for up to seven days are used to determine their biodegradability. It is observed that on exposure to lungfiuid, both Segal crystallinity and crystallite size for CNC systematically decrease with increase in exposure time, whereas CMCs are largely unaffected. Other effects observed are decreases in the intensities of certain XRD spectra lines with exposure time for CNC. These observations establish XRD as a valuable tool for determining biodegradability a/cellulose CNG.
Nanotechnology; Lung; Exposure-levels; Measurement-equipment; Cellulose-fibers; Author Keywords: Cellulose; nanocrystals; diffiaction; crystallite; crystallinity; measurement
Postek MT; Moon RJ; Rudie AW; Bilodeau MA
Production and applications of cellulose nanomaterials
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