Affiliation:
1. Laboratory of Pulp and Paper Science and Graphic Arts, University Grenoble Alpes, Centre National de la Recherche Scientifique (CNRS), Grenoble INP, LGP2, F-38000 Grenoble, France
Abstract
Converting paper-grade bleached Kraft pulp into dissolving pulp using eco-friendly chemicals on-site at the mill is a challenge for the pulp industry. In this study, two oxidation systems are evaluated: the first one is based on the use of hydrogen peroxide at various levels of alkalinity; the second one investigates the use of sodium periodate followed by hydrogen peroxide to convert aldehydes into carboxyls and enhance their hemicelluloses removal. Our results have shown that when using only peroxide, the removal of hemicelluloses was not sufficient to improve the pulp’s dissolving ability. Conversely, the periodate–peroxide system proved to be more efficient. Results regarding the pulp purity, solubility, degradation (pulp viscosity and cellulose molecular mass distribution), brightness, and its potential applications were discussed.
Funder
French National Research Agency
LabEx Tec 21
PolyNat Carnot Institute
Subject
Chemistry (miscellaneous),Analytical Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Molecular Medicine,Drug Discovery,Pharmaceutical Science
Reference27 articles.
1. Dissolving pulp market and technologies: Chinese prospective—A mini-review;Liu;BioResources,2016
2. Cellulose (Dissolving Pulp) Manufacturing Processes and Properties: A Mini-Review;Chen;BioResources,2016
3. Sixta, H. (2006). Handbook of Pulp, Wiley-VCH.
4. Man-Made Cellulose Fibres-a Comparison Based on Morphology and Mechanical Properties;Moosbauer;Lenzing. Berichte,2013
5. Hodzic, A., and Shanks, R. (2014). Natural Fibre Reinforcements, Woodhead Publishing.