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Fiber length and bonding effects on tensile strength and toughness of kraft paper
RISE - Research Institutes of Sweden, Bioekonomi.
RISE - Research Institutes of Sweden, Bioekonomi.ORCID-id: 0000-0001-7979-9158
Florida Atlantic University, USA.
RISE - Research Institutes of Sweden.
2018 (Engelska)Ingår i: Journal of Materials Science, ISSN 0022-2461, E-ISSN 1573-4803, Vol. 53, nr 4, s. 3006-3015Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Fiber length and fiber-to-fiber bonding effects on tensile strength and fracture toughness of kraft paper have experimentally been investigated. Laboratory sheets were made from kraft pulp, each with a distinct set of fiber lengths. Additionally, the fiber–fiber bond strength was improved by carboxymethyl (CMC) grafting. The tensile strength and work of fracture toughness results were compared to predictions from a shear-lag model which considers the fiber–fiber bond shear strength, the fiber tensile strength and fiber pull-out work. The tensile strength and fracture work for papers with weak fiber–fiber bonds increased with fiber length consistent with the shear-lag model. CMC-treated fibers provided strong fiber–fiber bonds. Papers made from such fibers displayed high strength and work of fracture independent of fiber length which indicates that the failure process is governed by fiber failures rather than bond failures. The fracture toughness, expressed as the critical value of the J-integral, increased strongly with fiber length for both untreated and CMC-treated papers. The results show that long fibers and CMC addition are extremely beneficial for improving the fracture toughness. © 2017, Springer Science+Business Media, LLC.

Ort, förlag, år, upplaga, sidor
2018. Vol. 53, nr 4, s. 3006-3015
Nyckelord [en]
Fiber optic sensors, Fibers, Fracture, Fracture toughness, Kraft paper, Kraft pulp, Paper, Tensile strength, Critical value, Failure process, Fiber failures, Fiber tensile strengths, Laboratory sheet, Shear-lag model, Strength and toughness, Work of fracture, Fiber bonding, Bonding, Fiber Length, Kraft Papers
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Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-33242DOI: 10.1007/s10853-017-1683-4Scopus ID: 2-s2.0-85031901532OAI: oai:DiVA.org:ri-33242DiVA, id: diva2:1185987
Anmärkning

Funding details: KTH, Kungliga Tekniska Högskolan; 

Tillgänglig från: 2018-02-27 Skapad: 2018-02-27 Senast uppdaterad: 2018-08-22Bibliografiskt granskad

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