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Cellulose

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24.11.2020 | Original Research

Modified Lyocell process to improve dissolution of cellulosic pulp and pulp blends in NMMO solvent

verfasst von: Sachin Jadhav, Ashwini Lidhure, Shirish Thakre, Vivek Ganvir

Erschienen in: Cellulose | Ausgabe 2/2021

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Abstract

Utilization of low-cost paper grade pulp is not feasible in Lyocell process due to presence of metallic and hemicellulose impurities that degrade cellulose and N-methyl-morpholine-N-oxide and lower the onset temperature of dope to initiate runway reaction. Conventional Lyocell process is restricted to use good quality dissolving grade pulp for safety reasons. To overcome this limitation, modified Lyocell process is demonstrated by pretreating pulps to remove metallic and hemicellulose impurities. Effectiveness of modified Lyocell process for faster dissolution and impurities removal for pulps/pulp blends is studied. Pretreatment of pulp blends significantly reduce impurities by 14–32% and improve swelling of pulp results in faster dissolution and safer process. Biopolymer prepared from modified process reduces undissolved particles by 50% and impurities by 30% thus improving overall quality and spinnability. This concept provides practical solution for using paper grade/impure pulps and making it more economical, faster dissolution and safe as compared to conventional process.

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Vorheriger Artikel Citric acid crosslinked chitosan/poly(ethylene oxide) composite nanofibers fabricated by electrospinning and thermal treatment for controlled drug release

Nächster Artikel Enhanced photocatalytic performance for phenol degradation using ZnO modified with nano-biochar derived from cellulose nanocrystals

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Titel: Modified Lyocell process to improve dissolution of cellulosic pulp and pulp blends in NMMO solvent
verfasst von: Sachin Jadhav
Ashwini Lidhure
Shirish Thakre
Vivek Ganvir
Publikationsdatum: 24.11.2020
Verlag: Springer Netherlands
Erschienen in: Cellulose / Ausgabe 2/2021
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI: https://doi.org/10.1007/s10570-020-03580-1

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