Properties of cellulose nanofibre networks prepared from never-dried and dried paper mill sludge

Cynthia Adu, Linn Berglund, Kristiina Oksman, Stephen J. Eichhorn*, Mark Jolly, Chenchen Zhu

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

12 Citations (Scopus)
141 Downloads (Pure)

Abstract

Paper mills yield large volumes of sludge materials which pose an environmental and economic challenge for disposal, despite the fact that they could be a valuable source for cellulose nanofibres (CNF) production. The aim of the study was to evaluate the production process and properties of CNF prepared by mechanical fibrillation of never-dried and dried paper mill sludge (PMS). Atomic force microscopy (AFM) showed that average diameters for both never-dried and dried paper sludge nanofibres (PSNF) were less than 50 nm. The never-dried and dried sludge nanofibres showed no statistical significant difference (p>0.05) in strength ∼92 MPa, and ∼85 MPa and modulus ∼11 GPa and ∼10 GPa. The study concludes that paper mill sludge can be used in a dried state for CNF production to reduce transportation and storage challenges posed on industrial scale.

Original languageEnglish
Pages (from-to)765-771
Number of pages7
JournalJournal of Cleaner Production
Volume197
Early online date27 Jun 2018
DOIs
Publication statusPublished - 1 Oct 2018

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