Solid freeform fabrication of epoxidized soybean oil/epoxy composite with bis or polyalkyleneamine curing agents

Liu, Z.S.; Erhan, Sevim Z.; Calvert, Paul

doi:10.1016/j.compositesa.2006.01.009

Cited by 37 publications

(18 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unfortunately, most of the thermosets based on anhydride-cured epoxidized vegetable oils (EVOs) generally have low crosslink density and T g . Therefore, FRP composites based on pure anhydride-cured EVOs are typically employed for situations that do not require high performance [31][32][33]. For use in structural FRP composites, EVOs are often blended with petrochemical-based epoxy resins such as the diglycidyl ether of bisphenol A (DGEBA) to enhance the strength and toughness of the final product [30,34].…”

Section: Scheme 1 Reaction Mechanism Of Epoxy and Anhydride Curingmentioning

confidence: 99%

Bio-based high performance epoxy-anhydride thermosets for structural composites: The effect of composition variables

Paramarta

Webster

2016

Reactive and Functional Polymers

View full text Add to dashboard Cite

Please cite this article as: Adlina Paramarta, Dean C. Webster, Bio-based high performance epoxy-anhydride thermosets for structural composites: The effect of composition variables, (2016), AbstractThe structure-property relationships of a designed series of anhydride-cured epoxidized sucrose soyate (ESS) thermosets were studied. Epoxidized sucrose soyate is a novel bio-based epoxy resin derived from sucrose and soybean oil fatty acids, and it contains an average of 12 epoxy functional groups per molecule. This epoxy resin was crosslinked with methyl hexahydrophthalic anhydride to form polyester thermosets with high crosslink density, and a zinc-complex catalyst was used. In this study, the impact of composition variables-anhydrideto-epoxy molar ratio and catalyst amount-on the chemical, mechanical, and thermal properties of the thermosets were examined. All of the thermoset samples had very high gel fraction, which indicated excellent network connectivity. Samples made using an equimolar ratio of anhydrideto-epoxy groups had lower conversion of functional groups as shown by the somewhat lower gel fraction and higher moisture absorption. Analysis of the thermomechanical and tensile properties of the thermosets suggests that there is a factor interaction between anhydride-toepoxy molar ratio and catalyst amount. Furthermore, the results suggest that the molecular networks of the thermoset samples are fairly complex due to the simultaneous competing reactions between catalyst-initiated epoxy-anhydride, hydroxyl-initiated epoxy-anhydride, and epoxy homopolymerization.

show abstract

Section: Scheme 1 Reaction Mechanism Of Epoxy and Anhydride Curingmentioning

confidence: 99%

Bio-based high performance epoxy-anhydride thermosets for structural composites: The effect of composition variables

Paramarta

Webster

2016

Reactive and Functional Polymers

View full text Add to dashboard Cite

show abstract

“…Most of the researchers focused on the investigation of the cross-linking process of partially bio-based polymers because of the unsatisfying properties of fully bio-based ones. Three main methods can be applied to improve the properties of ESO-based thermosets, which are using commercial curing agents, adding commercial epoxy resins to ESO, and adding other materials to make composites [10][11][12].…”

Section: Direct Cross-linking 21 Amine Hardenersmentioning

confidence: 99%

“…The curing processes of ESO or the mixture of ESO and commercial epoxy resin have been investigated, and some of these systems have been made into composites through adding fibers [10][11][12]14], clay [16,18] and other reinforcement [19]. Viscoelastic properties, mechanical properties and many other analyses have been studied to evaluate their applicability to be used in industry.…”

Section: Direct Cross-linking 21 Amine Hardenersmentioning

confidence: 99%

Bio-Based Epoxy Resin from Epoxidized Soybean Oil

Tang¹,

Chen²,

Gao³

et al. 2019

Soybean - Biomass, Yield and Productivity

View full text Add to dashboard Cite

Epoxidized soybean oil (ESO) is the oxidation product of soybean oil with hydrogen peroxide and either acetic or formic acid obtained by converting the double bonds into epoxy groups, which is non-toxic and of higher chemical reactivity. ESO is mainly used as a green plasticizer for polyvinyl chloride, while the reactive epoxy groups imply its great potential in both the monomer synthesis and the polymer preparation fields. Functional polymers are obtained by different kinds of reactions of the ESO with co-monomers and/or initiators shown in this chapter. The emphasis is on ESO based epoxy cross-linked polymers which recently gained strong interest and allowed new developments especially from both an academic point of view and an industrial point of view. It is believed that new ring-opening reagents may facilitate the synthesis of good structural ESO based materials.

show abstract

“…Plant oils, which are predominantly made up of triglyceride molecules, are ideal replacement material to manufacture bio-based polymeric matrix as they are renewable, offer comparable performance and of low cost when compared with petroleum-based polymer matrices. These materials have also environmental advantages over petroleum-based materials making them an attractive alternative [14][15][16][17][18] . Castor oil is one of these natural polymers.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of castor oil polymer mortars

Reis

Motta

2014

Mat. Res.

View full text Add to dashboard Cite

In the last years, ecological concerns have resulted in the interest to substitute petroleum-based materials by renewable resources-based ones. Natural oils constitute an excellent alternative for the development of natural composites. The aim of this work is to evaluate the use of natural polymer, manufactured from castor oil, as substitute to synthetic, epoxy and polyester, in polymer mortars matrices, with particular regards to compressive, flexural and fracture properties. Mechanical properties of castor oil polymer mortars are similar to epoxy based ones and significantly higher than polyester polymer mortars with improved flexural properties and less brittle failure.

show abstract

Solid freeform fabrication of epoxidized soybean oil/epoxy composite with bis or polyalkyleneamine curing agents

Cited by 37 publications

References 7 publications

Bio-based high performance epoxy-anhydride thermosets for structural composites: The effect of composition variables

Bio-based high performance epoxy-anhydride thermosets for structural composites: The effect of composition variables

Bio-Based Epoxy Resin from Epoxidized Soybean Oil

Mechanical properties of castor oil polymer mortars

Contact Info

Product

Resources

About