Chemical and spectroscopic studies of epoxy resin reactions in the surface coating field

O'Neill, L. A.; Cole, C. P.

doi:10.1002/jctb.5010060807

Cited by 50 publications

(8 citation statements)

References 5 publications

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“…49 Applying BlocBuilder to control GMA-containing feeds is problematic as the epoxy functionality in the monomer could react with the carboxylic acid attached to BlocBuilder, leading to branched, insoluble products. Indeed, the epoxy/carboxylic acid reaction has long been widely used in curing systems 50 and in reactive compatibilization. 51,52 Our earlier work did not indicate any sort of premature cross-linking, likely due to the dilution of the acid end group from the macroinitiator.…”

Section: Introductionmentioning

confidence: 99%

Nitroxide mediated controlled synthesis of glycidyl methacrylate-rich copolymers enabled by SG1-based alkoxyamines bearing succinimidyl ester groups

2011

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Section: Introductionmentioning

confidence: 99%

Nitroxide mediated controlled synthesis of glycidyl methacrylate-rich copolymers enabled by SG1-based alkoxyamines bearing succinimidyl ester groups

2011

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“…It has been shown [14][15][16][17] that in the absence of catalysts, epoxy/anhydride polymerization reactions occur mainly through consecutive addition/esterification steps, leading to a crosslinked polyester network. The mechanism involves the attack of hydroxyl groups of the epoxy resin on the anhydride molecules to form a monoester having a free carboxyl group.…”

Section: Resultsmentioning

confidence: 99%

Rheokinetic and Dynamic Mechanical Analysis of Tetrafunctional Epoxy/anhydride Mixtures. Influence of Stoichiometry and Cure Conditions

Corcuera

Caba

Gabilondo

et al. 2006

High Performance Polymers

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The copolymerization of hexahydrophthalic anhydride (HHPA) with N, N, N′, N′-tetraglycidyl-4,4′-diaminodiphenylmethane (TGDDM) has been studied for several stoichiometric ratios. The rheological, thermal and dynamic mechanical behaviors of these systems were examined. Kinetic studies by differential scanning calorimetry, in both isothermal and dynamic modes, showed a first-order kinetics. Activation energies were also obtained by rheological measurements, through gelation times at different temperatures, with results in agreement with calorimetric results. The dynamic mechanical behavior was studied to analyse the influence of both stoichiometric ratio and cure schedule in the viscoelastic properties of the mixtures.

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“…An uncatalyzed reaction pathway may be possible due to the presence of hydroxyl groups on the epoxy resins or from impurities in the raw materials. However, in most cases, the use of catalyst is necessary to ensure an efficient polymerization [19][20][21][22]. Catalysis of epoxy-anhydride reactions is often performed with Lewis base catalysts such as tertiary amines, amidines, quaternary onium salts, or metal salts.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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

Paramarta

Webster

2016

Reactive and Functional Polymers

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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.

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Chemical and spectroscopic studies of epoxy resin reactions in the surface coating field

Cited by 50 publications

References 5 publications

Nitroxide mediated controlled synthesis of glycidyl methacrylate-rich copolymers enabled by SG1-based alkoxyamines bearing succinimidyl ester groups

Nitroxide mediated controlled synthesis of glycidyl methacrylate-rich copolymers enabled by SG1-based alkoxyamines bearing succinimidyl ester groups

Rheokinetic and Dynamic Mechanical Analysis of Tetrafunctional Epoxy/anhydride Mixtures. Influence of Stoichiometry and Cure Conditions

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

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