title: Synthesis and characterization of novel cardanol based benzoxazines.
abstract: Benzoxazines are a class of phenolic compounds extensively studied in polymer science because of their properties as fiber reinforcements, fire-retardants and curing agents. In this article is described a solvent-less process, based on a Mannich reaction involving a primary amine and an aldehyde, for the preparation of new benzoxazines deriving from cardanol (a well known phenol obtained as a renewable organic resource and harmful by-product of the cashew industry). Particular attention is given to the synthesis and chemical characterization (both by 1H NMR spectroscopy and HPLC), while the thermal polymerization process has been monitored by differential scanning calorimetry.
authors.affiliation: Cimteclab Srl, Area Science Park, Padriciano 99, 34012 Trieste, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Minigher
authors.forename: Elena
authors.initials: E
authors.lastname: Benedetti
authors.forename: Ornela
authors.initials: O
authors.lastname: De Giacomo
authors.forename: Pietro
authors.initials: P
authors.lastname: Campaner
authors.forename: Vincent
authors.initials: V
authors.lastname: Aroulmoji
mesh_terms: D000447:Aldehydes / Q000737:chemistry; D000588:Amines / Q000737:chemistry; D031021:Anacardium / Q000737:chemistry; D048588:Benzoxazines / Q000138:chemical synthesis*; D002152:Calorimetry, Differential Scanning; D002851:Chromatography, High Pressure Liquid; D019906:Nuclear Magnetic Resonance, Biomolecular; D009754:Nuts / Q000737:chemistry; D010636:Phenols / Q000737:chemistry*
chemical_list: D000447:Aldehydes; D000588:Amines; D048588:Benzoxazines; D010636:Phenols; C038590:cardanol