skip to main content
Language:
Search Limited to: Search Limited to: Resource type Show Results with: Show Results with: Search type Index

A highly efficient chemical approach to producing green phosphorylated cellulosic macromolecules

RSC advances, 2021-07, Vol.11 (39), p.2426-24216 [Peer Reviewed Journal]

This journal is © The Royal Society of Chemistry. ;Copyright Royal Society of Chemistry 2021 ;This journal is © The Royal Society of Chemistry 2021 The Royal Society of Chemistry ;ISSN: 2046-2069 ;EISSN: 2046-2069 ;DOI: 10.1039/d1ra02713a ;PMID: 35479056

Full text available

Citations Cited by
  • Title:
    A highly efficient chemical approach to producing green phosphorylated cellulosic macromolecules
  • Author: Ablouh, El-Houssaine ; Brouillette, François ; Taourirte, Moha ; Sehaqui, Houssine ; El Achaby, Mounir ; Belfkira, Ahmed
  • Subjects: Cellulose fibers ; Charge density ; Chelation ; Chemistry ; Fire resistance ; Flame retardants ; Macromolecules ; NMR ; Nuclear magnetic resonance ; Phosphates ; Phosphoric acid ; Phosphorylation ; Polyelectrolytes ; Thermodynamic properties ; Thermogravimetric analysis ; Titration ; Zeta potential
  • Is Part Of: RSC advances, 2021-07, Vol.11 (39), p.2426-24216
  • Description: The introduction of phosphate groups into cellulosic fibers allows for the tuning of their fire resistance, chelating and metal-adhesion properties, enabling the development of flame-retardant adhesive and adsorbent materials. Toward that end, the major challenge is developing a novel efficient and environmentally friendly phosphorylation route that offers an alternative to existing methods, which can achieve the targeted properties. For this purpose, cellulosic fibers were chemically modified herein using solid-state phosphorylation with phosphoric acid and urea without causing substantial damage to the fibers. The morphological, physicochemical, structural and thermal characterisations were examined using FQA, SEM, EDX, FTIR, 13 C/ 31 P NMR, conductometric titration, zeta potential measurement and thermogravimetric analysis. All the characterisations converge towards a crosslinked polyanion structure, with about 20 wt% grafted phosphates, a nitrogen content of about 5 wt% and a very high charge density of 6608 mmol kg −1 . Phosphate groups are linked to cellulose through a P-O-C bond in the form of orthophosphate and pyrophosphates. Furthermore, thermal properties of the phosphorylated cellulosic fibers were investigated and a new degradation mechanism was proposed. The introduction of phosphate groups into cellulosic fibers allows for the tuning of their fire resistance, chelating and metal-adhesion properties, enabling the development of flame-retardant adhesive and adsorbent materials.
  • Publisher: England: Royal Society of Chemistry
  • Language: English
  • Identifier: ISSN: 2046-2069
    EISSN: 2046-2069
    DOI: 10.1039/d1ra02713a
    PMID: 35479056
  • Source: PubMed Central
    DOAJ Directory of Open Access Journals
Back to results list
INSPIRE LIBRARY - TON DUC THANG UNIVERSITY (84-028) 37 755 057 Feedback
19 Nguyen Huu Tho St. Dist.7, HCM thuvien@tdtu.edu.vn

Copyright © 2017 INSPIRE LIBRARY - TON DUC THANG UNIVERSITY

Searching Remote Databases, Please Wait