title: Rosin-derived imide-diacids as epoxy curing agents for enhanced performance.
abstract: Two rosin-based imide-diacids were synthesized and studied as epoxy curing agents. In comparison, a similar imide-diacid based on trimellitic anhydride was also prepared. The chemical structures were confirmed by (1)H NMR and FT-IR. The curing of a commercial epoxy with these imide-containing diacids was studied by differential scanning calorimetry (DSC). Thermal stability, tensile and dynamic mechanical properties of the cured epoxies were investigated. The results indicate that rosin-based imide-diacids used as curing agents resulted in significantly higher glass transition temperature, tensile and dynamic mechanical properties than the imide-diacid derived from trimellitic anhydride. Rosin acids have a great potential to replace some of current petroleum-based compounds in the synthesis of epoxy curing agents.
authors: Composite Materials and Engineering Center, Washington State University, Pullman, WA 99164, USA.
authors: Xiaoqing
authors: X
authors: Liu
authors: Wenbo
authors: W
authors: Xin
authors: Jinwen
authors: J
authors: Zhang
mesh_terms: D000143:Acids / Q000737:chemistry*; D004852:Epoxy Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D007094:Imides / Q000737:chemistry*; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D008422:Materials Testing; D012116:Resins, Plant / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013718:Tensile Strength; D013818:Thermogravimetry
chemical_list: D000143:Acids; D004852:Epoxy Compounds; D007094:Imides; D012116:Resins, Plant; C013893:rosin