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A renewable bio-based epoxy resin with improved mechanical performance that can compete with DGEBA

Nikafshar, Saeid, Zabihi, Omid, Hamidi, Susan, Moradi, Yousef, Barzegar, Saeed, Ahmadi, Mojtaba and Naebe, Minoo 2017, A renewable bio-based epoxy resin with improved mechanical performance that can compete with DGEBA, RSC advances, vol. 7, no. 14, pp. 8694-8701, doi: 10.1039/c6ra27283e.

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Title A renewable bio-based epoxy resin with improved mechanical performance that can compete with DGEBA
Author(s) Nikafshar, Saeid
Zabihi, OmidORCID iD for Zabihi, Omid orcid.org/0000-0001-8065-2671
Hamidi, Susan
Moradi, Yousef
Barzegar, Saeed
Ahmadi, Mojtaba
Naebe, MinooORCID iD for Naebe, Minoo orcid.org/0000-0002-0607-6327
Journal name RSC advances
Volume number 7
Issue number 14
Start page 8694
End page 8701
Total pages 8
Publisher Royal Society of Chemistry
Place of publication Cambridge, Eng.
Publication date 2017
ISSN 2046-2069
Keyword(s) Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
Epoxidized soybean oil
Ferulic acid
Chemoenzymatic synthesis
Cure kinetics
Nanocomposite
System
Nanoparticles
Anhydride
FTIR
Summary The aim of this study is to find a suitable substitution for diglycidyl ether bisphenol A (DGEBA) to avoid the devastating side effects of bisphenol A. Vanillin, an aromatic compound, was used as a renewable material to synthesize a bio-based epoxy resin. The structure of the vanillin-based epoxy resin was confirmed by Fourier transform infrared spectroscopy (FT-IR) analysis. The major drawback of bio-based epoxy resins is their poor mechanical properties preventing them from competing with petroleum based epoxy resins such as DGEBA. Herein, a prepared calcium nitrate solution as an inorganic accelerator was used to accelerate the curing reaction of bio-based epoxy resin which reduced curing times as well as improving significantly the mechanical properties e.g., tensile strength, pull-off strength, and Izod impact strength. Differential scanning calorimetry (DSC) analysis was used to investigate the curing process and thermal properties of the vanillin-based epoxy resin with and without inorganic accelerators and also DGEBA without accelerators. The results showed that in the presence of 2 wt% inorganic accelerator, the initial onset curing temperature of vanillin-based epoxy resin was reduced from 60.1 °C to 8.5 °C, while the initial onset curing temperature of DGEBA was 55.8 °C. In addition, tensile strength and Izod impact strength of the vanillin-based epoxy system in the presence of inorganic accelerators increased in comparison to the DGEBA system. Moreover, in order to study the effect of inorganic accelerators on the toughness of the synthesized vanillin-based epoxy resin, fracture surfaces from Izod impact strength tests were observed using scanning electron microscopy (SEM) which confirmed improving mechanical properties.
Language eng
DOI 10.1039/c6ra27283e
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2017, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution non-commercial licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30093508

Document type: Journal Article
Collections: Institute for Frontier Materials
Open Access Collection
GTP Research
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.