Chemical Modification of ED-24 Epoxy Resin by Adipic Acid

Bratychak, Michael; Astakhova, Olena; Mykhailiv, Olena; Stryzhachuk, Alina; Shyshchak, Olena

doi:10.23939/chcht06.01.051

Cited by 7 publications

(10 citation statements)

References 7 publications

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“…We noted in [11] that the reaction between ED-24 epoxy resin and adipic acid may proceed in accordance with Eq. (1) in the presence of different catalysts: BTEACh; 1,4-diazobicyclo [2,2]octane; N,N-dimethylaminopyridine; 18-Crown-6 (O-18); potassium hydroxide; triethylammonium; zinc chloride (ZnCl 2 ) and catalytic system of O-18 + ZnCl 2 with the molar ratio of 1 : 3.…”

Section: Kinetic Investigationsmentioning

confidence: 75%

“…Kinetic investigations were carried out in a threenecked reactor equipped with a back condenser and thermometer under constant stirring according to the procedure described in [11]. The reaction was controlled by the change of carboxy groups concentration.…”

Section: Kinetic Investigationsmentioning

confidence: 99%

“…of adipic acid carboxy group increases the effective rate constant by 13 times. At the catalyst concentration of 30 mol % the effective rate constant is already 2.67 ± 0.12 l/mol•s [11]. Therefore in current investigations we use BTEACh as the catalyst in the amount of 30 mol % per 1 g.-eq.…”

Section: Kinetic Investigationsmentioning

confidence: 99%

“…Earlier we studied modification of ED-24 dianic epoxy resin by the adipic acid [11]. It was found that such modification is prospective and improves the resin properties, therefore it is advisable to study epoxy resin modification by carboxylic acids in details.…”

Section: Introductionmentioning

confidence: 99%

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Epoxy Resins Chemical Modification by Dibasic Acids

Bashta¹,

Astakhova²,

Shyshchak³

et al. 2014

ChChT

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Kinetic regularities of epoxy resins chemical modification by aliphatic and aromatic dibasic acids have been studied. The commercial dianic resins ED-20 and ED-24 were used as epoxy resins. Oxalic, malonic, succinic, sebacic, maleic, terephthalic and isophthalic acids were used as dibasic carboxylic acids. The effective rate constants and activation energies of the reactions between epoxy resin and acids by different nature have been calculated. The synthesis method for oligomers with epoxy and carboxy groups has been suggested. The structure of synthesized oligomers was confirmed by chemical analyses and IR-spectroscopy.

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Section: Kinetic Investigationsmentioning

confidence: 75%

Section: Kinetic Investigationsmentioning

confidence: 99%

Section: Kinetic Investigationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Epoxy Resins Chemical Modification by Dibasic Acids

Bashta¹,

Astakhova²,

Shyshchak³

et al. 2014

ChChT

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“…While analyzing literature data [12] it was found that the best proceeding of the reaction between organic acid and compound with epoxy ring takes place in the presence of BTEACh as a catalyst. The results of the catalyst effect on the reaction between PO and AA are represented in Fig.…”

Section: Cpo Synthesismentioning

confidence: 99%

Synthesis and Properties of Carboxy-Containing Peroxy Oligomer

Bashta¹,

Bruździak²,

Astakhova³

et al. 2013

ChChT

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Carboxy-containing peroxy oligomer (CPO) has been synthesized via the reaction of peroxy derivative of ED-24 epoxy resin with free peroxy and epoxy groups with adipic acid in the presence of benzyl triethylammonium chloride. The effect of catalyst amount, reaction temperature and process time on the reaction rate has been determined. The effective rate constants and activation energies have been calculated. CPO synthesis procedure has been developed. CPO structure has been confirmed by chemical and IRspectroscopic analyses. CPO was studied as an additive for the cross-linking of epoxy-oligoesteric mixtures based on ED-20 epoxy resin and TGM-3 oligoesteracrylate. Using IR-spectroscopy the chemism of the mentioned cross-linking has been determined.

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Graphene oxide/epoxy composites with enhanced fracture toughness for liquid hydrogen storage

Chen¹,

Sun

Fan

et al. 2022

Polymers for Advanced Techs

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Graphene oxide (GO)/epoxy composites cured by aliphatic dibasic acids have been prepared. The influences of structure of aliphatic dibasic acid and loading of GO on curing process and mechanical properties of epoxy composites were studied. The results show that the reaction activities, gel time of corresponding epoxy-acid system and tensile strength of the formed epoxy resins decrease with the increase of the chain length of aliphatic dibasic acids. Both fracture toughness (>1.96 MPaÁm 1/2 ) and elongations at break (>6%) increase with the increase of the chain length of aliphatic dibasic acids. The introduction of GO is helpful to increase the mechanical properties and the gas transmission coefficient of GO/epoxy composites. A maximum of tensile strength and elongations at break were obtained when the loading of GO is 0.6 wt%.The gas transmission coefficient of GO/epoxy composite increases with the increase of GO loading. The excellent mechanical properties and gas leakage resistance coefficient of the formed epoxy composites provides potential application in many fields where conventional brittle epoxy resins are inapplicable.

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Chemical Modification of ED-24 Epoxy Resin by Adipic Acid

Cited by 7 publications

References 7 publications

Epoxy Resins Chemical Modification by Dibasic Acids

Epoxy Resins Chemical Modification by Dibasic Acids

Synthesis and Properties of Carboxy-Containing Peroxy Oligomer

Graphene oxide/epoxy composites with enhanced fracture toughness for liquid hydrogen storage

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