Synthesis and characterization of allyl fatty acid derivatives as reactive coalescing agents for latexes

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

Joana V. Barbosa (Autor) FEUP; Fernanda Oliveira (Autor) Outra; Jorge Moniz (Autor) Outra; Fernão D. Magalhães (Autor) FEUP; Margarida M. S. M. Bastos (Autor) FEUP

Revista

Título: Journal of the American Oil Chemists' Society

Vol. 89 Nº 12

Páginas: 2215-2226

ISSN: 0003-021X

Indexação

ISI Web of Knowledge - 7 Citações

Scopus - 9 Citações

INSPEC

Classificação Científica

FOS: Ciências agrárias > Outras ciências agrárias

Projetos Associados

PEst-C/EQB/UI0511/2011 - PROJECTO ESTRATÉGICO - UI 511 - 2011-2012

Outras Informações

ID Authenticus: P-002-30K

DOI: 10.1007/s11746-012-2114-y

Abstract (EN): This work evaluated the use of allyl fatty acid esters derived from vegetable oil (palmitic acid, soybean and sunflower oils) as reactive coalescing agents in a waterborne latex system. Allyl fatty acid derivatives (AFAD) from vegetable oils were synthesized by two different processes. The synthesis was monitored by IR-spectroscopy and the final product characterized by FT-IR, GC-MS, H-1 and C-13 NMR. The presence of conjugated double bonds in the aliphatic chain was confirmed, which is a determinant for the proposed autoxidative latexes drying mechanism. Each of the AFAD were subsequently added to a standard acrylic emulsion, in order to study its potential as reactive coalescing agent. The minimum film-forming temperature (MFT), glass transition temperature (T (g)), drying time and rubbing resistance to solvents were evaluated. The results showed that, when added to water-borne acrylic resins, an AFAD acts as a non-volatile plasticizer capable of autoxidative crosslinking with itself.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12