A new protocol for efficient and high yield preparation of cellulose nanofibrils

Yangyang Peng, Chaoyu Duan, Retulainen Elias, Lucian A. Lucia, Shiyu Fu (Corresponding Author)

    Research output: Contribution to journalArticleScientificpeer-review

    6 Citations (Scopus)

    Abstract

    Nanocellulose has attracted considerable attention in virtue of the unique mechanical and optical properties. There were less cost-efficient methods for its mass production. In this paper, a facile high yield procedure for cellulose nanofibrils consisting of sulfuric acid treatment followed by alkali neutralization and homogenization was developed. The product was termed “acid-assisted cellulose nanofibrils” (AACNF). AACNF yield was 91.6% from dissolving pulp when 55 wt% sulfuric acid was applied at 45 °C for 40 min. The diameter was 10–20 nm, while the length varied from 40 to 800 nm. AACNF aqueous suspension showed good transparency at 600 nm having rheological properties similar to cellulose nanocrystals. The crystallinity of AACNF was 81.3% and displayed thermal properties that in comparison to traditional nanocellulose were very attractive because of neutralization. This study provided a facile high yield procedure for the production of nanocellulose with similar characteristics to traditional nanocellulose, which was significant to commercialization of nanocellulose. Graphical abstract: [Figure not available: see fulltext.].

    Original languageEnglish
    Pages (from-to)877-887
    Number of pages11
    JournalCellulose
    Volume26
    Issue number2
    Early online date12 Nov 2018
    DOIs
    Publication statusPublished - 30 Jan 2019
    MoE publication typeNot Eligible

    Keywords

    • Acid hydrolysis
    • Cellulose nanofibrils
    • High yield
    • Neutralization

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