Bio-based epoxy matrix from diglycidyl ether of bisphenol A and epoxidized corn oil, crosslinked wit
Tuesday, November 19, 2013
FR Mustata, N Tudorachi, I Bicu - Industrial &
Engineering Chemistry Research, 2013
corn oil (ECO) was synthesized and used as reactive diluent for
diglycidyl ether of bisphenol A (DGEBA)/Diels–Alder adducts of rosin
acids with acrylic acid (AcAAbA) mixtures. The influences of ECO amount
on the curing kinetics and thermal properties of cured DGEBA/ECO/AcAAbA
mixtures were investigated. From scanning electron microscopy images, a
uniform distribution of ECO in the composite structure can be observed.
The kinetic analysis of the curing reactions was evaluated, using the
variable peak exotherm methods of Flynn–Wall–Ozawa, Kissinger, and the
Netzsch Thermokinetics software. The cross-linking reactions were
identified to take place in four steps. Kinetic analysis of the thermal
degradation of the DGEBA/ECO/AcAAbA was evaluated with the Netzsch
Thermokinetics software and occurs in three steps, depending on the
chemical structure of the sample. On the basis of the analysis of
evolved gases by thermal decomposition coupled with Fourier transform
infrared and mass spectrometry techniques, a schematic mechanism for the
thermal degradation process was proposed.
... the local market. Rosin (acid number, an = 171 mg
KOH∙g-1) and diglycidyl ether of bisphenol...
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