D
Derek G. Gray
Researcher at McGill University
Publications - 187
Citations - 19378
Derek G. Gray is an academic researcher from McGill University. The author has contributed to research in topics: Cellulose & Liquid crystal. The author has an hindex of 57, co-authored 187 publications receiving 17075 citations. Previous affiliations of Derek G. Gray include Virginia Tech & University of Toronto.
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Journal ArticleDOI
Nanocelluloses: A New Family of Nature-Based Materials
D. Klemm,Friederike Kramer,Sebastian Moritz,Tom Lindström,Mikael Ankerfors,Derek G. Gray,Annie Dorris +6 more
TL;DR: This Review assembles the current knowledge on the isolation of microfibrillated cellulose from wood and its application in nanocomposites; the preparation of nanocrystalline cellulose and its use as a reinforcing agent; and the biofabrication of bacterial nanocellulose, as well as its evaluation as a biomaterial for medical implants.
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Effect of reaction conditions on the properties and behavior of wood cellulose nanocrystal suspensions.
TL;DR: Increased acid-to-pulp ratio reduced the dimensions of the nanocrystals thus produced and the critical concentration was increased and the biphasic range became narrower; a suspension made from a bleached kraft eucalyptus pulp gave very similar properties to the softwood nanocrystal suspension when prepared under similar hydrolysis conditions.
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Helicoidal self-ordering of cellulose microfibrils in aqueous suspension.
TL;DR: An in vitro system that attracts by its simplicity, where above a critical concentration the colloidal dispersion separates spontaneously into a chiral nematic liquid crystalline phase and solidifies into regularly twisted fibrillar layers that mimic the structural organization of helicoids in nature.
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Effect of microcrystallite preparation conditions on the formation of colloid crystals of cellulose
TL;DR: In this paper, the particle size of cellulose microcrystallites was characterized with transmission electron microscopy and photon correlation spectroscopy, and the surface charge was determined by conductometric titration.