2022
DOI: 10.1080/01694243.2022.2095152
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Influence of polymerizable surfactants on the adhesion performance and water resistance of water-based acrylic pressure-sensitive adhesives (PSAs)

Abstract: The behavior of different polymerizable surfactants was investigated to improve the water-resistance of pressure-sensitive adhesives (PSAs) based on acrylic acid (AA) and n-butyl acrylate (n-BA). Differences in the adhesion properties were found according to the chemical structure and the critical micelle concentration of the polymerizable surfactant, especially when compared to the nonpolymerizable reference surfactant (Dowfax 2A1). The polymerizable surfactants with a branched structure resulted in more gel … Show more

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Cited by 9 publications
(1 citation statement)
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“…The surfactants used in emulsion polymerization not only control the colloidal stability of the particles in the polymer dispersion (i.e., the latex) but their composition and microstructure (block copolymers, branched copolymers, polymer brushes) can also have a large influence on the physical properties of the latex and the final polymer film (or coating). , In general, most used surfactants are not covalently bound to the colloidal particles and can diffuse from the particles into the environment or from the bulk to the film surface (and potentially desorb). This is especially undesirable in the case of biomedical applications, but also more generally, this may negatively affect the polymer film properties, such as adhesion, surface polarity, smoothness, and gloss. To prevent desorption of surfactants from the particle surfaces or migration from the bulk polymer film (and potential leaching into the environment), reactive surfactants, which are chemically bound to the polymer particles, can be used, and those containing propenyl end-groups are promising candidates. Methacrylic oligomers containing these end-groups (see Scheme ) are readily prepared via catalytic chain transfer polymerization (CCTP), and their application in emulsion polymerization has been described previously. ,, Amphiphilic block macromonomers can be obtained by chain extension via sulfur-free reversible addition–fragmentation chain transfer , or used directly in an emulsion polymerization to form in situ amphiphilic copolymers, in a mechanism similar to what is commonly known as polymerization-induced self-assembly. , In an earlier work, we synthesized macromonomers via CCTP, which were successfully used as reactive surfactants in an emulsion polymerization. These macromonomers were composed of methacrylic acid (MAA) and methyl methacrylate (MMA), butyl methacrylate (BMA), lauryl methacrylate (LMA), or butyl acrylate (BA) and used in the emulsion polymerization of methyl methacrylate and/or butyl ac...…”
Section: Introductionmentioning
confidence: 99%
“…The surfactants used in emulsion polymerization not only control the colloidal stability of the particles in the polymer dispersion (i.e., the latex) but their composition and microstructure (block copolymers, branched copolymers, polymer brushes) can also have a large influence on the physical properties of the latex and the final polymer film (or coating). , In general, most used surfactants are not covalently bound to the colloidal particles and can diffuse from the particles into the environment or from the bulk to the film surface (and potentially desorb). This is especially undesirable in the case of biomedical applications, but also more generally, this may negatively affect the polymer film properties, such as adhesion, surface polarity, smoothness, and gloss. To prevent desorption of surfactants from the particle surfaces or migration from the bulk polymer film (and potential leaching into the environment), reactive surfactants, which are chemically bound to the polymer particles, can be used, and those containing propenyl end-groups are promising candidates. Methacrylic oligomers containing these end-groups (see Scheme ) are readily prepared via catalytic chain transfer polymerization (CCTP), and their application in emulsion polymerization has been described previously. ,, Amphiphilic block macromonomers can be obtained by chain extension via sulfur-free reversible addition–fragmentation chain transfer , or used directly in an emulsion polymerization to form in situ amphiphilic copolymers, in a mechanism similar to what is commonly known as polymerization-induced self-assembly. , In an earlier work, we synthesized macromonomers via CCTP, which were successfully used as reactive surfactants in an emulsion polymerization. These macromonomers were composed of methacrylic acid (MAA) and methyl methacrylate (MMA), butyl methacrylate (BMA), lauryl methacrylate (LMA), or butyl acrylate (BA) and used in the emulsion polymerization of methyl methacrylate and/or butyl ac...…”
Section: Introductionmentioning
confidence: 99%