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In an attempt to prepare cellulose nanocrystals (CNCs) by TEMPO-mediated oxidation of microcrystalline cellulose (MCC), a new species of MCC called AaltoCell was placed under scrutiny. Unlike Avicel, AaltoCell is a never-dried species, still containing ca. 10% xylan in its structure. According to thermoporosimetry, the pore size distributions of AaltoCell and Avicel did not differ from each other...
Cellulose nanocrystal (CNC) production suffers, among other problems, from low yields. The focus of this study was to investigate the universal effect of charge density, centrifugation, and mechanical treatment as limiting causes of yield. Microcrystalline cellulose (MCC) was used as the starting material in order to eliminate the relatively arbitrary yield losses caused by the hydrolysis conditions...
Birch xylan was functionalized with various thiols through UV initiated radical thiol-ene reaction under mild conditions. Xylan was allylated through etherification with allyl glycidyl ether under alkaline conditions. The allylated xylan was then reacted with thiols containing varying functional groups: trimethylbenzyl mercaptan, dodecanethiol, thioglycolic acid, l-cysteine and cysteamine hydrochloride...
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