Sökning: WFRF:(Luengo Hendriks Cris L. 1974 )
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Characterization of...
Characterization of interfacial stress transfer ability in acetylation-treated wood fibre composites using X-ray microtomography
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- Joffre, Thomas, 1987- (författare)
- Uppsala universitet,Tillämpad materialvetenskap,Materials in Medicine
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- Segerholm, Kristoffer (författare)
- KTH,RISE,Byggteknik,Byggnadsmaterial,SP Technical Research Institute of Sweden, Sustainable Built Environment & KTH, Div. of Building Materials
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- Persson, Cecilia (författare)
- Uppsala universitet,Tillämpad materialvetenskap,Materials in Medicine
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- Bardage, Stig (författare)
- RISE,Byggteknik,SP Technical Research Institute of Sweden, Sustainable Built Environment
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- Luengo Hendriks, Cris L., 1974- (författare)
- Uppsala universitet,Avdelningen för visuell information och interaktion,Bildanalys och människa-datorinteraktion
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- Isaksson, Per (författare)
- Uppsala universitet,Tillämpad mekanik
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(creator_code:org_t)
- Elsevier BV, 2017
- 2017
- Engelska.
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Ingår i: Industrial crops and products (Print). - : Elsevier BV. - 0926-6690 .- 1872-633X. ; 95, s. 43-49
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The properties of the fibre/matrix interface contribute to stiffness, strength and fracture behaviour of fibre-reinforced composites. In cellulosic composites, the limited affinity between the hydrophilic fibres and the hydrophobic thermoplastic matrix remains a challenge, and the reinforcing capability of the fibres is hence not fully utilized. A direct characterisation of the stress transfer ability through pull-out tests on single fibres is extremely cumbersome due to the small dimension of the wood fibres. Here a novel approach is proposed: the length distribution of the fibres sticking out of the matrix at the fracture surface is approximated using X-ray microtomography and is used as an estimate of the adhesion between the fibres and the matrix. When a crack grows in the material, the fibres will either break or be pulled-out of the matrix depending on their adhesion to the matrix: good adhesion between the fibres and the matrix should result in more fibre breakage and less pull-out of the fibres than poor adhesion. The effect of acetylation on the adhesion between the wood fibres and the PLA matrix was evaluated at different moisture contents using the proposed method. By using an acetylation treatment of the fibres it was possible to improve the strength of the composite samples soaked in the water by more than 30%.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- LANTBRUKSVETENSKAPER -- Annan lantbruksvetenskap -- Miljö- och naturvårdsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Other Agricultural Sciences -- Environmental Sciences related to Agriculture and Land-use (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Medicinsk material- och protesteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Medical Materials (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinsk bioteknologi -- Biomaterialvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Medical Biotechnology -- Biomaterials Science (hsv//eng)
Nyckelord
- Acetylation
- Adhesion
- CT analysis
- PLA
- Wood fibres
- Fiber reinforced plastics
- Fibers
- Fracture
- Fracture mechanics
- Polymer matrix composites
- Reinforcement
- Tensile strength
- Tomography
- Different moisture contents
- Fibre reinforced composites
- Fibre/matrix interfaces
- Interfacial stress transfer
- Length distributions
- Thermoplastic matrices
- Wood fibre
- X ray microtomography
- Wood
- Teknisk fysik med inriktning mot materialvetenskap
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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