Cutin monomers extracted from tomato peel waste by hydrolysis was used to prepare polyester-urethane coatings by reaction with 1,4-butanediol and isophorone diisocianate. The starting monomers as well as the reaction products were characterized by infrared, 1H and 13C-NMR spectroscopies. Hydroxylic and carboxylic acid groups were also determined by acid-base titration. The obtained coatings tested on glass, wood, paper and aluminium showed good adehesion to all tested substrates, high hydrophobicity and good protection property against corrosion in the case of aluminium. The coatings showed also good thermal stability strating to degrade in nitrogen atmosphere at 330°C.
Polyester-urethane coatings based on hydrolyzed cutin from tomato peel by-products
Doriana, ScittarelliMethodology
;Lindomar Alberto, LerinFormal Analysis
;Angela, Montanari;Andrea, BalboSupervision
;Laura, De Bellis;Vincenzo, Grassi;Federica Zanotto;Monica Bertoldo
Supervision
2022
Abstract
Cutin monomers extracted from tomato peel waste by hydrolysis was used to prepare polyester-urethane coatings by reaction with 1,4-butanediol and isophorone diisocianate. The starting monomers as well as the reaction products were characterized by infrared, 1H and 13C-NMR spectroscopies. Hydroxylic and carboxylic acid groups were also determined by acid-base titration. The obtained coatings tested on glass, wood, paper and aluminium showed good adehesion to all tested substrates, high hydrophobicity and good protection property against corrosion in the case of aluminium. The coatings showed also good thermal stability strating to degrade in nitrogen atmosphere at 330°C.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
