Facile and eco-friendly extraction of cellulose nanocrystalsviaelectron beam irradiation followed by high-pressure homogenization

Abstract

Cellulose nanocrystals were preparedviashort-time pretreatment by electron-beam irradiation in the solid state and disintegration using high pressure homogenization.

High energy oxidation and organosolv solubilization for high yield isolation of cellulose nanocrystals (CNC) from Eucalyptus hardwood

“… 27 (20~30 nm) and Lee et al . 13 (~26 nm), and similar width with that measured by Peyre et al . 22 (7 nm), and three times larger than that measured by Abushammala et al .…”

“…The amount of carboxylic groups allegedly by irradiation was quantified by conductometric titration 22 , and the value is 0.4 mmol/g CNC. The extent of irradiation-mediated oxidation is almost equivalent to the TEMPO-mediated 22 , 23 , electron beam-mediated 11 , and oxalic acid-mediated oxdition 13 . The irradiation oxidation was suitable for isolation of cellulose because the oxidation agent is more aggressive towards lignin and hemicellulose, whereas cellulose is hardly decomposed under the mild conditions 16 .…”

“…The authors demonstrated that the use of HCl vapor resulted in the rapid degradation and hydrolysis of cotton-based cellulose fibers without practically any mass loss in the cellulose substrate 12 . Lee and co-workers 13 reported a facile and eco-friendly extraction of cellulosenanocrystals from softwood pulp via electron beam irradiation followed by high-pressure homogenization. However, limited information on CNC isolation directly from lignocellulosic biomass has been available using irradiation oxidation followed by organosolv solublization.…”

Fabrication of regenerated cellulose nanoparticles by mechanical disintegration of cellulose after dissolution and regeneration from a deep eutectic solvent

“…Although the DP of regenerated cellulose is most likely too low for bulk cellulose applications, like lms and yarns, it is in line with the DP of some cellulosic nanomaterials reported in the literature. 44,45 It can be assumed that the dissolution of cellulose is due to the degradation of cellulose. It is well known that the DP of cellulose has a high impact on the dissolution of cellulose, for example in aqueous NaOH/urea.…”

Design and Synthesis of Fluorescent Nanocelluloses for Sensing and Bioimaging Applications

“…The most useful case of this method is the generation of specific BNCs by biosynthesis-generating methods. [28,29] In addition to the above two representative methods, in recent years, some researchers have prepared NCs by means of electron beam radiation followed with high pressure homogenization, which is regarded as a simple and environment-friendly preparation method. [30] NCs exhibit excellent thermal processing performance by virtue of low thermal expansion coefficient (CTE, 12-28 ppm · K À 1 ).…”