Curing behavior and structure of a novel nanocomposite from glycerol diglycidyl ether and 3,3-dimethylglutaric anhydride

• Published in: Thermochimica acta Vol. 517; no. 1; pp. 9 - 15
• Main Authors: omrani, Abdollah, Rostami, Abbas Ali, Ravari, Fatemeh, Mashak, Arezu
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier B.V 20-04-2011; Elsevier
• Subjects: aluminum oxide; Anhydrides; Applied sciences; Composites; Cures; Curing; DSC; Ethers; Exact sciences and technology; Forms of application and semi-finished materials; glycerol; Glycerol diglycidyl ether; heat tolerance; image analysis; Indexing in process; Mathematical models; measurement; Morphology; Nanocomposites; Nanomaterials; nanoparticles; Nanostructure; Polymer industry, paints, wood; prediction; reaction kinetics; scanning electron microscopy; Technology of polymers; Thermoset nanocomposite; X-ray diffraction; Glycerol diglycidyl ether; DSC; Morphology; Thermoset nanocomposite; Differential scanning calorimetry; Scanning electron microscopy; Epoxy resin; Nanostructure; Organic anhydride; Curing (plastics); X ray diffraction; Composite material; Thermal stability; Thermosetting resin; Surface structure; Nanocomposite; Thermal analysis; Kinetics; Alumina
• ISSN: 0040-6031; 1872-762X
• DOI: 10.1016/j.tca.2011.01.024

► A nanocomposite based on glycerol diglycidyl ether (GDE) was synthesized and characterized. ► Kinetics of the reaction was interpreted by means of the advanced isoconversional method. ► XRD and SEM were used to demonstrate homogeneous dispersion of the nanoalumina in GDE matrix.
A novel nanocomposite was synthesized by curing of glycerol diglycidyl ether (GDE) and 3,3-dimethylglutaric anhydride (DGA) in the presence of alumina nanoparticles. Kinetics of GDE/DGA/nano-Al
2O
3 cure was studied by DSC measurements at dynamic and isothermal states. It was shown that the reaction kinetics could be described well by the Horie model. The advanced isoconversional method developed by Vyazovkin is utilized to describe the curing behavior of the nanocomposite. A technique of predicting isothermal cure time from the sole dependence of
E
a
on
α was then considered and compared to the experimental results. The structure of the nanocomposite was characterized by X-ray diffraction analysis and scanning electron microscopy imaging. The SEM images showed that the nanocomposite has the morphology of homogeneous dispersion of alumina nanoparticles. It was shown by TGA measurements that the incorporation of nano-Al
2O
3 into GDE/DGA matrix results in thermal resistance improvement.