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Showing 1 to 6 of 6 for “"TEMPO-mediated oxidation"”.
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Nanofibrillation of lignocellulosic biomass into lignin-containing nanocellulose for 3D printing and antimicrobial applications
… section (Chapter 3 and 4), optimizations of TEMPO-mediated oxidation and enzymatic nanofibrillation have been explored. By TEMPO-mediated oxidation, several LNC products having high lignin contents (as high as 27.21 wt percent) were successfully produced, which was among the first few studies …
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Nanocellulose: Preparation, Characterization, Supramolecular Modeling, and its Life Cycle Assessment
… through a combined chemical-mechanical process (TEMPO-mediated oxidation followed by intensive sonication), and this new material was named molecularly thin nanocellulose (MT nanocellulose). The overarching objective of this study was to understand the formation and supramolecular structure of MT …
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TEMPO-oxidized Nanofibrillated Cellulose Film (NFC) incorporating Graphene Oxide (GO) Nanofillers
… plastics. To design a new system of novel TEMPO-oxidized cellulose nanofibrils (TOCNs)/graphene oxide (GO) composite, the 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation was utilized to disintegrate never-dried wood nanofibrillated cellulose (NFC). GO was …
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Biodegradable food packaging using agricultural wastes (Banana Pseudostem)
… formation. Alkaline treatment, bleaching, and TEMPO-mediated oxidation coupled with mild mechanical disintegration successfully removed non-cellulosic polysaccharides and isolated nano-sized fibre from banana pseudostem. The nanocellulose had diameters 7-35 nm, several micrometer lengths, …
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TEMPO-oxidized Nanocelluloses: Surface Modification and use as Additives in Cellulosic Nanocomposites
The process of TEMPO-mediated oxidation has gained broad usage towards the preparation of highly charged, carboxyl-functionalized polysaccharides. TEMPO-oxidized nanocelluloses (TONc) of high surface charge and measuring 3 to 5 nm in width have been recently prepared from TEMPO-oxidized pulp. This …
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Nanocomposites: Incorporation of Cellulose Nanocrystals into Polymers and Addition of Zwitterionic Functionality
… acid by 2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO)-mediated oxidation, then amine functionalization by carbodiimide coupling chemistry, and finally functionalized with a zwitterionic group by β-propiolactone ring opening. Amine coupling was confirmed with X-ray photoelectron spectroscopic …