Influence of cellulose nanocrystals from pea pod waste on mechanical, thermal, biodegradability, and barrier properties of chitosan-based films

Mohamed Hamid Salim, Youness Abdellaoui, Anass Ait Benhamou, El Houssaine Ablouh, Mounir El Achaby, Zineb Kassab

    Research output: Contribution to journalArticlepeer-review

    15 Scopus citations

    Abstract

    Due to their unique features, nanocellulose-reinforced polymers have become one of the most effective solutions to improve polymer characteristics. This work aimed to investigate the characteristics of cellulose nanocrystals (CNCs) derived from pea pods and their reinforcement effect on chitosan (CS) polymer films. Needle-shaped CNCs with an aspect ratio of 89 were produced using sulfuric acid hydrolysis and used to develop reinforced CS nanocomposites. FTIR revealed the formation of hydrogen bonds between CS and CNCs in the nanocomposites, which confirmed the improved UV and water barrier properties of CS–CNC composite films. The effect of CNCs on the thermal stability of the CS films was slightly improved. The addition of 10 wt% CNCs to the CS film increased tensile strength by 41%. The CS–CNC composite films were found to have a lower degradability than neat CS. The findings suggested that CS–CNC nanocomposite films produced in this work could be used as a potential and sustainable food packaging material with outstanding water barrier properties and moderate biodegradability. Graphical abstract: [Figure not available: see fulltext.]

    Original languageBritish English
    Pages (from-to)5117-5135
    Number of pages19
    JournalCellulose
    Volume29
    Issue number9
    DOIs
    StatePublished - Jun 2022

    Keywords

    • Biodegradability
    • Bionanocomposite films
    • Cellulose nanocrystals
    • Mechanical properties
    • Pea pod (Pisum Sativum L.)
    • Water vapor barrier properties

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