Curing behavior and properties of high biosourced epoxy resin blends based on a triepoxy monomer and a tricarboxylic acid hardener from 10-undecenoic acid

Espinosa, Juan Pablo; Hanazumi, Vivina; Stefani, Pablo Marcelo; Ruseckaite, Roxana Alejandra

doi:10.1016/j.polymertesting.2019.106208

Cited by 10 publications

(12 citation statements)

References 37 publications

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“…The CO stretching peak for the ester groups was observed at about 1740 cm −1 26,27 . The peaks for the CH and CC stretching of alkene were observed at 3010 and 1658 cm −1 respectively for soybean oil and pESO 10,26,28 . pESO had some CC bonds as expected.…”

Section: Resultssupporting

confidence: 65%

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Effect of functionality and content of epoxidized soybean oil on the physical properties of a modified diglycidyl ether of bisphenol A resin system

Lim

Kim

2020

J of Applied Polymer Sci

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Partially epoxidized soybean oil (pESO) and fully epoxidized soybean oil (fESO) were used respectively to modify a diglycidyl ether of bisphenol A (DGEBA) resin system in this study. The pESO was prepared by epoxidizing soybean oil and the fESO was purchased as it was commercially available. DGEBA/ESO ratio of the epoxy resin system was changed from 100/0 to 70/30 and triethylenetetramine was used as a curing agent. Impact strength of the bio‐epoxy resin system with fESO increased with ESO content, but the system with pESO decreased with ESO content. The bio‐epoxy resin system with pESO showed higher tensile strength and elongation at break than the system with fESO at ESO 30 wt%. Tensile modulus and thermal degradation temperature decreased with ESO content and glass transition temperature was highest at 20 wt% ESO regardless of epoxide functionality of ESO. The performance of the DGEBA/ESO bio‐epoxy resin system could be tailored by changing ESO content and functionality.

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Section: Resultssupporting

confidence: 65%

“…The viscosity of the resin system would increase faster with decreasing ESO content because DGEBA reacts faster than ESO, and for this reason, some epoxide groups of ESO would not react and remain in the cured network. This would result in the enthalpy change of reaction decrease with ESO content 28 …”

Section: Resultsmentioning

confidence: 99%

Effect of functionality and content of epoxidized soybean oil on the physical properties of a modified diglycidyl ether of bisphenol A resin system

Lim

Kim

2020

J of Applied Polymer Sci

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“…Epoxy resins (EPs) as one of the most versatile thermosetting polymers are extensively utilized in the manufacture of coatings, paints, adhesives, composites and so on 1,2 . They are commonly selected due to their thermal stability, chemical resistance, high adhesion, good mechanical properties and electrical performance 3 .…”

Section: Introductionmentioning

confidence: 99%

Investigation of the cure kinetics and thermal stability of an epoxy system containing cystamine as curing agent

Khalafi

Ehsani

Khonakdar

2020

Polymers for Advanced Techs

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2,2′‐Dithiobisethanamine (cystamine), an aliphatic diamine containing exchangeable disulfide bonds, was used as the curing agent for epoxy resin. The dynamic curing kinetics and thermal stability of the epoxy/cystamine system were investigated by DSC and TGA analysis. Applied the Málek method, the Sestak–Berggren autocatalytic equation was selected to describe the cure kinetics of the epoxy/cystamine system. The results showed that the Šesták– Berggren equation is in good agreement with the experimental data. The activation energy of the curing reaction was 56.2 and 53.6 kJ mol −1, respectively, calculated by Kissinger and KAS models. Also, the glass transition temperature for the epoxy/cystamine system was slightly than that of the commonly used epoxy‐diamine systems. Moreover, the thermal degradation of the cured epoxy/cystamine network was observed at temperatures above 283°C. Further, the results obtained from the epoxy/cystamine system were compared with those obtained from the epoxy/diethylenetriamine system. All the above results suggest that cystamine has the potential to be used as the curing agent for epoxy systems.

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“…Epoxies have the characteristics of light weight, easy processing, strong designability and excellent mechanical properties. [1][2][3][4][5][6][7] Nearly the epoxy networks currently being produced are synthesized from petroleum, it is worth noting that 90% of the commercialized epoxy thermosets are derived from diglycidyl ether of bisphenol A (DGEBA) which is the product of the reaction between bisphenol A and epichlorohydrin. 8 In addition, the main raw material, bisphenol A has been shown to has adverse effects on the environment and human endocrine system.…”

Section: Introductionmentioning

confidence: 99%

“…Epoxy resin is the main base material of CFRP. Epoxies have the characteristics of light weight, easy processing, strong designability and excellent mechanical properties 1–7 . Nearly the epoxy networks currently being produced are synthesized from petroleum, it is worth noting that 90% of the commercialized epoxy thermosets are derived from diglycidyl ether of bisphenol A (DGEBA) which is the product of the reaction between bisphenol A and epichlorohydrin 8 .…”

Section: Introductionmentioning

confidence: 99%

High‐performance thermosets with tailored properties derived frommulti‐armstared vanillin and carbon fiber composites

Guo

Dong

et al. 2021

J of Applied Polymer Sci

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Vanillin, a rigid compound can be separated from lignin, is a promising sustainable candidate for industrial and high performance polymers, while synthesis of hexa-epoxies is challenging. Meanwhile, carbon fiber reinforced biobased polymers combining high performance are more difficult to be achieved because of the contradictions of liquidity and high rigidity in the polymer structure and performance. In this paper, a novel hexa-epoxy functionalized bio-based epoxy resin (HPVIGEP) with a multi-arm star structure, which simultaneously reduced the viscosity and improved thermo-mechanical properties. The rheological behavior analysis results of HPVIGEP indicated that the viscosity was 3406.9 mPaÁs at 25 C, which dramatically decreased by 75.8% compared to DGEBA (14,096 mPaÁs), leading to excellent processability and adaptability. At the same time, the study on mechanical properties revealed that the cured HPVIGEP manifested 30.6%, 33.7% and 49.0% in higher tensile strength, tensile modulus and storage modulus (30 C) than of cured commercial epoxy, respectively. The tensile strength and flexural strength of carbon fiber composites which were applied HPVIGEP were increased by 9.3% and 10.9%, respectively. In a word, this work provides the promise for the application of environmentally friendly bio-based composite materials.

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Curing behavior and properties of high biosourced epoxy resin blends based on a triepoxy monomer and a tricarboxylic acid hardener from 10-undecenoic acid

Cited by 10 publications

References 37 publications

Effect of functionality and content of epoxidized soybean oil on the physical properties of a modified diglycidyl ether of bisphenol A resin system

Effect of functionality and content of epoxidized soybean oil on the physical properties of a modified diglycidyl ether of bisphenol A resin system

Investigation of the cure kinetics and thermal stability of an epoxy system containing cystamine as curing agent

High‐performance thermosets with tailored properties derived frommulti‐armstared vanillin and carbon fiber composites

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