Epoxy resin blends and composites from waste vegetable oil

[Display omitted] •Purification process developed for use of waste vegetable oils in polymers.•10% w/w waste plant oil-based epoxy added to DGEBA resin system has no ill effects.•Addition at levels greater than 15% w/w leads to plasticizing of epoxy resin.•Resin systems compatible with recycled carb...

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Bibliographic Details
Published in:European polymer journal 2017-04, Vol.89, p.449-460
Main Authors: Fernandes, Felipe C., Kirwan, Kerry, Lehane, Danielle, Coles, Stuart R.
Format: Article
Language:English
Subjects:
Biopolymers
Bisphenol A
Carbon fiber reinforced plastics
Effects
Epoxidation
Epoxy resins
Frying
Material testing
Mechanical properties
Polymer blends
Polymer matrix composites
Polymers
Tensile properties
Thermal degradation
Thermosetting resins
Vegetable oil
Vegetable oils
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Summary:[Display omitted] •Purification process developed for use of waste vegetable oils in polymers.•10% w/w waste plant oil-based epoxy added to DGEBA resin system has no ill effects.•Addition at levels greater than 15% w/w leads to plasticizing of epoxy resin.•Resin systems compatible with recycled carbon fibres, enhancing sustainability. Thermosets and composites were prepared from blends of epoxidized waste vegetable oils and diglycidyl ether of bisphenol-A to investigate this material as an alternative triglyceride source for epoxy resins. Purification of the waste oil was developed to remove impurities derived from thermal degradation in the frying process and different epoxidation methodologies were investigated. Effects of epoxidized vegetable oil content (up to 30wt%) and origin on the tensile properties were studied and revealed that purified waste oils performed similarly to neat oil in contents up to 10wt%, proving that this strategy does not compromise tensile properties when waste oils are used in suitable proportions. Furthermore, a more prominent plasticizing effect was observed when more than 15wt% of bio-based resin was used as confirmed by DMA. Composites were prepared with recycled carbon fibres (up to 30wt%) and thermosets with 10wt% of bio-based epoxy resins, significantly improving the mechanical properties.
ISSN:0014-3057
1873-1945
DOI:10.1016/j.eurpolymj.2017.02.005