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Preparation of cellulose nanocrystals from deinked waste newspaper and their usage for papermaking

Carbohydrate polymer technologies and applications, 2021-12, Vol.2, p.100107, Article 100107 [Peer Reviewed Journal]

2021 ;ISSN: 2666-8939 ;EISSN: 2666-8939 ;DOI: 10.1016/j.carpta.2021.100107

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  • Title:
    Preparation of cellulose nanocrystals from deinked waste newspaper and their usage for papermaking
  • Author: Guan, Ying ; Li, Wenqi ; Gao, Hui ; Zhang, Liping ; Zhou, Liang ; Peng, Feng
  • Subjects: Cellulose nanocrystals ; Deinking ; Papermaking ; Waste newspapers
  • Is Part Of: Carbohydrate polymer technologies and applications, 2021-12, Vol.2, p.100107, Article 100107
  • Description: Cellulose nanocrystals (CNC) were successfully prepared from waste newspapers through a simple pretreatment and hydrolysis process. The Fourier transform infrared spectroscopy (FTIR) result for the CNC suggested that no new chemical bonds were formed during the preparation of CNC. X-ray diffraction results indicated that the crystallinities of the deinked and untreated waste newspapers were 66% and 73.8%, respectively. Greater smoothness of the deinked waste newspapers fibers could be clearly observed by scanning electron microscope (SEM), which was attributed to the removal of ink from the chemical treatment. The transmission electron microscopy (TEM) and atomic force microscopy (AFM) results of the CNC revealed a needle-like natural fiber with a length of 300 nm to 600 nm, a diameter of 10 nm to 30 nm, and an aspect ratio in the 10 to 60 range. The obtained CNC particles were found to improve the physical properties of paper sheets, specifically that of the tear, tensile, and burst indices. The maximum increase in the physical properties was achieved with a 5.5% CNC addition.
  • Publisher: Elsevier Ltd
  • Language: English
  • Identifier: ISSN: 2666-8939
    EISSN: 2666-8939
    DOI: 10.1016/j.carpta.2021.100107
  • Source: DOAJ : Directory of Open Access Journals
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