Novel bio-based flexible epoxy resin from diglycidyl ether of bisphenol A cured with castor oil maleate

Abstract

The paper deals with the synthesis, thermal and electrical behavior study of a flexible epoxy resin based on castor oil maleate and diglycidyl ether of bisphenol A. Castor oil maleate was obtained via esterification of castor oil with maleic anhydride. The chemical structures of castor oil maleate and epoxy network were confirmed by FTIR and 1 H-NMR spectroscopy. Thermal decomposition of the synthesized flexible network has been studied by means of dynamic thermogravimetry in nitrogen atmosphere up to 600 o C. Global kinetic parameters values of thermal decomposition process were determined using the isoconversional method of Friedman. Simultaneous TG-DTA analysis indicated that thermal decomposition process occurred in three stages, characterized by diffusion, n order and Avrami-Erofeev reaction models. Kinetic parameters determination, corresponding to each individual stage of thermal decomposition, was also possible through multivariate non-linear regression method. A good correlation was found between experimental and simulated data. Evolved gases analysis was monitored by simultaneous TG/DTA-FTIR-MS technique. Dielectric relaxation spectroscopy measurements were also undertaken.

Optimization of the Loading of an Environmentally Friendly Compatibilizer Derived from Linseed Oil in Poly(Lactic Acid)/Diatomaceous Earth Composites

“…On the other hand, vegetable oils can be subjected to a maleinization process, which increases reactivity as well as the above-mentioned methods [20,21,22,23]. This modification is based on the reaction of maleic anhydride with unsaturations, thus leading to anchorage of maleic anhydride in the triglyceride structure [21,24]. Some recent investigations have revealed the interesting plasticization effect of maleinized vegetable oils in some polymers such as poly(lactic acid)—PLA—to increase chain mobility [1,25], but in general, there are few research works on the potential of these biobased materials as additive in plastic formulations.…”

Reusable electrochemical sensor for bisphenol A based on ionic liquid functionalized conducting polymer platform

“…Bisphenol A (2,2-bis(4-hydroxyphenyl)propane, BPA) is a high production volume organic chemical widely used in the plastic industry for the production of polycarbonate and epoxy, which are used to manufacture products for daily living [1,2]. On the other hand, BPA has been called an exogenous endocrine-disrupting chemical that can interfere with hormonal activities in the growth, development and reproductive processes of aquatic animals [3].…”

Zinc/Aluminium–Quinclorac Layered Nanocomposite Modified Multi-Walled Carbon Nanotube Paste Electrode for Electrochemical Determination of Bisphenol A

“…Bisphenol A (BPA), is an organic compound consist of two phenol functional groups. It is extensively used as a monomer to manufacture epoxy resins and polycarbonates (PC) plastic [ 1 , 2 ]. There are various ways BPA can be spread into the environment such as via wastewater during the production or via leaching process of epoxy resin and PC plastic products, including food package, water bottles and baby bottles [ 3 ].…”