Historical aircraft paints: Analytical pyrolysis for the identification of paint binders used on two Messerschmitt Bf 109 planes was written by La Nasa, Jacopo;Blaensdorf, Catharina;Dolcher, Eleonora;Del Seppia, Serena;Micheluz, Anna;Modugno, Francesca;Pamplona, Marisa;Bonaduce, Ilaria. And the article was included in Journal of Analytical and Applied Pyrolysis in 2022.Computed Properties of C15H22O2 The following contents are mentioned in the article:
Historical airplanes have entered museum collections to show the development of aviation and are part of our tech. heritage. The period between the 1920’s and 1945 is characterized by giant progressions in the chem. industry. During these years a wide increase in the production of new materials and solvents was observed, that replaced the natural materials used in the aircraft industries due to their improved properties. In Germany this industrial development was counteracted by preparations for the war that aimed at a self-sufficiency based on German products and thus an independency of the international market. This work presents the analyses of the organic binders of painted layers of a Messerschmitt Bf 109 model E-3 used until the 1955 and repainted several times until the 1974 and a cabin roof from a Bf 109 model B built in the 1937-1938 lost during the flight and never repainted. The microscopic analyses performed on the samples from the two planes allowed us to characterize the presence of a high and variable number of paint layers. These layers adhere extremely well on each other and are very brittle. For this reason, it was almost impossible to sep. them for anal. purposes by mech. means. In this study we applied for the first time anal. pyrolysis coupled with gas chromatog. and mass spectrometry for the characterization of the painted layers from the two planes. The combination of the versatility of anal. pyrolysis together with the high selectivity of gas chromatog. and mass spectrometry allowed us to fully characterize and discriminate the synthetic and natural materials used in both airplanes, and to characterize the original paint binders as being composed of alkyd resin, phenol formaldehyde resin and nitrocellulose. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Computed Properties of C15H22O2).
2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Computed Properties of C15H22O2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics