New biobased carboxylic acid hardeners for epoxy resins
作者： Fanny Jaillet , Myriam Desroches , Rémi Auvergne , Bernard Boutevin , Sylvain Caillol
关键词: Titration 、 Epoxy 、 Soybean oil 、 Carboxylic acid 、 Differential scanning calorimetry 、 Thioglycolic acid 、 Materials science 、 Bisphenol A diglycidyl ether 、 Thermogravimetry 、 Organic chemistry
摘要: Soybean oil was modified into a novel biobased polyacid hardener by thiol-ene coupling with thioglycolic acid. The structure of the initial soybean and triglyceride carefully analyzed using 1H NMR titration. thermal crosslinking reaction between acid epoxidized resin studied differential scanning calorimetry (DSC) rheology. Then, synthesized employed as curing agent for bisphenol A diglycidyl ether to elaborate new partially materials. These materials, formulated in stoichiometry ratio, were characterized DSC, thermogravimetry analyses, dynamic mechanical analyses exhibit interesting properties coatings. Practical applications: products chemistry described this contribution, i.e., from acid, provide building blocks further epoxy syntheses groups. obtained resins are may be applied binders coatings.
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