Study of performance properties of itaconic acid based acrylic-modified polyester for industrial baking finishes

•Synthesis of renewable itaconic acid based unsaturated polyester and graft copolymer of acrylic monomer.•Characterization of grafting of acrylic on polyester by FT-IR spectroscopy.•Study the effect of degree of acrylation of polyester on cross-link density by DMA analysis. Itaconic acid based unsat...

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Bibliographic Details
Published in:Progress in organic coatings 2015-12, Vol.89, p.75-81
Main Authors: Shivarkar, Anandkumar B., Gaykar, Dagadu V., Jain, Rajeev K.
Format: Article
Language:English
Subjects:
Acrylic resins
Acrylic-modified polyester
Adhesion
Analyzers
Baking finishes
Copolymerization
Crosslinking
Finishes
Itaconic acid
Polyester
Polyester resins
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Summary:•Synthesis of renewable itaconic acid based unsaturated polyester and graft copolymer of acrylic monomer.•Characterization of grafting of acrylic on polyester by FT-IR spectroscopy.•Study the effect of degree of acrylation of polyester on cross-link density by DMA analysis. Itaconic acid based unsaturated polyesters have been synthesized followed by their co-polymerization with commonly used acrylic monomers. Series of such acrylic-modified polyesters have been prepared and examined their physical and performance characteristics. Apart from determining various physico-chemical characteristics, these resins were also characterized for their molecular weight distribution and grafting of acrylic on polyester using gel permeation chromatography (GPC) and FT-IR techniques respectively. The performance of cured film and the effect on cross-linking density of the synthesized acrylic-modified polyesters were investigated through dynamic mechanical analyzer (DMA) using melamine formaldehyde resin as a cross-linker at elevated temperature. The resultant polymeric film showed excellent hardness, flexibility, impact resistance, adhesion, and cupping with improved weathering resistance over non-acrylated polyester.
ISSN:0300-9440
1873-331X
DOI:10.1016/j.porgcoat.2015.08.003