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Improvement in the mechanical properties of light curing epoxy resin with MFC (Micro-Fibrillated Cellulose)

Transactions on the built environment, 2008, Vol.97, p.139-148

2015 INIST-CNRS ;2008. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the associated terms available at https://www.witpress.com/elibrary . ;ISSN: 1746-4498 ;ISBN: 184564106X ;ISBN: 9781845641061 ;EISSN: 1743-3509 ;DOI: 10.2495/HPSM080151

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Title:
Improvement in the mechanical properties of light curing epoxy resin with MFC (Micro-Fibrillated Cellulose)
Author: OHNISHI, Y ; FUJII, T ; OKUBO, K
Subjects: Adhesion tests ; Adhesive strength ; Applied sciences ; Breakage ; Cellulose ; Cellulose fibers ; Cellulosic resins ; Composites ; Crack propagation ; Curing ; Devices using thermal energy ; Dryers ; Energy ; Energy absorption ; Energy. Thermal use of fuels ; Epoxy resins ; Ethanol ; Exact sciences and technology ; Forms of application and semi-finished materials ; Fracture surfaces ; Freeze drying ; Hygroscopic water ; Interfacial shear strength ; Mechanical properties ; Physical properties ; Polymer industry, paints, wood ; Properties and testing ; Pulp ; Shear strength ; Technology of polymers ; Water demand ; Wood ; Wood pulp ; Wood. Paper. Non wovens
Is Part Of: Transactions on the built environment, 2008, Vol.97, p.139-148
Description: This study shows an effective method to reinforce light curing epoxy resin with MFC (Micro-Fibrillated Cellulose) extracted from wood pulp. MFC is strongly hydrophilic and it is kept with water. Therefore, absorbed water in MFC was removed by two procedures (treatments): (1) freeze-drying and (2) substituting the water in MFC with ethanol. Absorbed water needs to be removed in order to reinforce the light curing resin with MFC because included water degrades the properties of the resin. The variation in the mechanical properties according to the type of treatment was examined after the composites were fabricated with the treated MFC. Debonding between MFC and the resin was observed in the freezedried MFC composite. On the other hand, breakage of MFC was observed in the ethanol-treated MFC composite. In order to evaluate the interfacial adhesion between MFC and the resin, the interfacial shear strength was defined by measuring the critical fiber length. When MFC was treated with ethanol, the interfacial shear strength between MFC and the resin increased 2.7 times as high as that of the freeze-dried MFC composite. In the SEM observation of the fracture surface of the ethanol-treated MFC composite, fiber bridging of MFC was observed. Fiber bridging prevented the crack propagation in the ethanoltreated MFC composite, and the energy absorption was improved by 58% in comparison with that of the pure resin.
Publisher: Southampton: WIT
Language: English
Identifier: ISSN: 1746-4498
ISBN: 184564106X
ISBN: 9781845641061
EISSN: 1743-3509
DOI: 10.2495/HPSM080151
Source: ProQuest Central

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Improvement in the mechanical properties of light curing epoxy resin with MFC (Micro-Fibrillated Cellulose)

2015 INIST-CNRS ;2008. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the associated terms available at https://www.witpress.com/elibrary . ;ISSN: 1746-4498 ;ISBN: 184564106X ;ISBN: 9781845641061 ;EISSN: 1743-3509 ;DOI: 10.2495/HPSM080151

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