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

• Type: Article in International Scientific Journal
• Date: 2012

Authors

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

Journal

Title: Journal of the American Oil Chemists' Society

Vol. 89 No. 12

Pages: 2215-2226

ISSN: 0003-021X

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 9 Citations

INSPEC

Scientific classification

FOS: Agrarian Sciences > Other Agrarian Sciences

Associated Projects

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

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12