Univerzita PardubiceFakulta chemicko- technologická

Univerzita Pardubice

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Publikace detail

Latexes based on vegetable oil-derived monomers and theri coating applications

Autoři: Amponsah Bright | Kolář Martin | Podzimek Štěpán | Honzíček Jan | Hájek Martin | Machotová Jana

Rok: 2025

Druh publikace: ostatní - přednáška nebo poster

Strana od-do: nestránkováno

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
eng	Latexes based on vegetable oil-derived monomers and theri coating applications	The need to produce synthetic polymers from renewable and sustainable resources also affects the area of emulsion polymerization. Synthetic latexes, common in paints, adhesives, and surface treatments, are typically produced using petroleum-derived monomers. Acrylated methyl esters of higher fatty acids derived from rapeseed, camelina, and linseed oil were synthesized through transesterification, epoxidation, and subsequent acrylation. Methyl methacrylate and butyl acrylate were copolymerized with various contents of the respective bio-based derivative to obtain polymeric latexes for coating applications. Successful emulsion polymerizations with up to 20 wt. % of the bio-based derivatives were performed with low coagulum, high monomer conversion, and stable colloidal properties. Dynamic light scattering and zeta potential analysis assessed particle size and stability. The incorporation of bio-based derivatives into polymeric latexes was confirmed with infrared and Raman spectroscopy. Asymmetric flow field flow fractionation coupled with a multi-angle light scattering detector was used to analyze the synthesized copolymers in terms of their molar mass distribution. The results revealed that copolymerizing the bio-based derivatives resulted in ultra-high molar mass nanogel fractions formed because of multi-acrylated ingredients derived from polyunsaturated fatty acids. The phenomenon of nanogel formation became more pronounced for the linseed oil-based derivative. Evaluated coating properties showed that latexes comprising the bio-based derivative provided increased water repellence (about 10° higher water contact angles were achieved for all bio-based coating compositions in contrast to a reference latex). Moreover, latexes comprising chemically modified oils in the contents of 25 and 30 wt. % provided water whitening-resistant coatings, making the bio-based derivatives promising candidates for replacing petroleum-based monomers in producing sustainable latex coating	emulsion polymerization; latex; coating; biomonomer; vegetable oil; sustainability