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Effect of copolymer composition on flow properties and film-forming of functionalised latex binders
Autoři: Šňupárek Jaromír | Quadrat Otakar
Rok: 2006
Druh publikace: článek v odborném periodiku
Název zdroje: Surface Coatings International, Part B: Coatings Transactions
Název nakladatele: OIL & COLOUR CHEMISTS ASSOCIATION
Místo vydání: OCCA PRIORY HOUSE-967 HARROW RD WEMBLEY, MIDDLESEX HA0 2SF, ENGLAND
Strana od-do: 15-22
Tituly:
Jazyk Název Abstrakt Klíčová slova
cze Vliv složení kopolymeru na tokové vlastnosti a tvorbu filmu z funkcionalizovaných latexových pojiv Byl studován vliv hydroplastifikace dissperzních částic na tokové vlastnosti disperzí a minimální filmovornou teplotu. Byl prokázán vliv kopolymerace hydrofobního styrenu na tyto vlastnosti. acrylic copolymer; associative thickeners; film formation; hydroplasticisation; latex rheology
eng Effect of copolymer composition on flow properties and film-forming of functionalised latex binders Acrylic and styrene/acrylic latex binders comprising functional monomers such as acrylic acid, methacrylic acid, methacrylamide, methyl methacrylate, and hydroxyethyl methacrylate in different concentration levels were synthesised. It was shown that the extent of particle swelling and the hydroplasticisation of the alkali-swellable particles was affected by the polarity of the 'hard' comonomer. The effect of dissociated carboxylic groups on the increase in latex viscosity and on the lowering of its minimum film-forming temperature was much more pronounced in the case of the methyl methacrylate comonomer. The thickening of the latices with hydrophobe-modified ethylene oxide urethane (HEUR) associative thickeners was considerably affected by the hydrophobicity of the particles. Thickening with hydrophically-modified alkali-soluble emulsion ( HASE) thickeners depends predominantly on the excluded volume of swollen thickener particles. The influence of the hydrophobic styrene content was negligible. acrylic copolymer; associative thickeners; film formation; hydroplasticisation; latex rheology

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