Effect of the chain transfer agent on pressure-sensitive adhesive performance of butyl acrylate based latexes and determination of odor level caused by sulfur derivative compound

Bilgin, Ecem Temelkaya; Turna, Murad; Dülgar, Cansu Akarsu

doi:10.1063/1.5142963

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…On the other hand, the increase of TDM increased the peel values which was mainly attributed to the decrease of gel content. Since the increasing of amount of TDM decreased the chain length, improved their mobility and their interaction with the substrate [3]. However, with 0.2 phm of TDM, the best results were obtained with 0.5 phm AA.…”

Section: Adhesive Propertiesmentioning

confidence: 98%

“…Having both high peel resistance, good adhesion, along with high shear resistance and good cohesion, is challenging for the companies since they are opposite characteristics to each other. Normally, with an increase in adhesion comes a decrease in cohesion, and vice versa [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…According the bibliography, another for to obtain a balance between peel and shear resistance may be by the incorporation of chain transfer agent, like tert-dodecyl mercaptan (TDM) [3]. This can control the molecular weight and the gel content formation.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Acrylic Acid and Tert-Dodecyl Mercaptan in the Adhesive Performance of Water-Based Acrylic Pressure-Sensitive Adhesives

Márquez

Paredes²,

Alarcia

et al. 2020

Polymers

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Currently, pressure-sensitive adhesives (PSA) are used in more than 80% of all labels in the market today. They do not require any heat, solvent, or water to activate: It only takes light pressure to apply them to a product surface. Many products that come in glass bottles need labels that have staying power in harsh conditions. For that reason, it is necessary to have a good balance between all the polymer adhesive properties. In this study is described how adhesive properties of water-based PSA were affected by varying the amount of functional monomer acrylic acid (AA) and chain transfer agent, tert-dodecyl mercaptan (TDM). Four series of PSA were prepared by emulsion polymerization. Within each polymer series, the AA monomer proportion was held constant between 0.5 and 3.0 phm, and the fraction of the chain transfer agent was varied 0.0 to 0.2 phm. The results showed that the gel content decreased with the increase of the chain transfer agent and with the reduction of AA. All adhesives properties (tack, peel, and shear resistance) improved with increasement of the AA monomer. The increase of chain transfer agent caused decrease of the gel content resulting in higher peel resistance and tack values, but lower shear resistance values.

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Section: Adhesive Propertiesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Influence of Acrylic Acid and Tert-Dodecyl Mercaptan in the Adhesive Performance of Water-Based Acrylic Pressure-Sensitive Adhesives

Márquez

Paredes²,

Alarcia

et al. 2020

Polymers

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Noncorrosive Pressure-Sensitive Adhesives of Acryl Polymers by Sulfur-Free Addition–Fragmentation Chain Transfer Agents

Kawatani,

Yoshino,

Matsuzaki

et al. 2024

Macromolecules

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A series of sulfur-free chain transfer agents (CTAs) for radical polymerization were synthesized to control the molecular weight of acrylic polymers for pressure-sensitive adhesion (PSA). PSAs are commonly used in daily life and industrial manufacturing, and their mechanical properties can be tuned by balancing adhesion and cohesion depending on the molecular weight of the polymer. The molecular weight is typically controlled by adding CTAs, such as n-dodecyl mercaptan (NDM), to the radical polymerization system, although sulfur compounds often cause problems, such as bad smell and metal corrosion. Therefore, sulfur-free CTAs were designed by substituting methacrylates and methacrylonitrile with phenyl groups and malonate skeletons. Among them, CTA containing a methacrylonitrile skeleton functioned efficiently in the solution and suspension polymerizations of (meth)acrylates, although it exhibited lower reinitiation efficiency than NDM. Nevertheless, the extension of the reaction time to 6 h resulted in monomer conversion and number-average molar mass (M n) comparable to the polymerization in the presence of NDM. The resulting polymers did not lead to copper corrosion, while the PSAs prepared with these polymers exhibited mechanical properties comparable to those of conventional PSA in peel, creep, and probe-tack tests. PSAs that realize sufficient strength and no metal corrosion are particularly effective in applications involving LED elements and electronic circuit boards, where silver electrodes and wires are in direct contact with PSAs.

show abstract

Effect of the chain transfer agent on pressure-sensitive adhesive performance of butyl acrylate based latexes and determination of odor level caused by sulfur derivative compound

Cited by 2 publications

References 11 publications

Influence of Acrylic Acid and Tert-Dodecyl Mercaptan in the Adhesive Performance of Water-Based Acrylic Pressure-Sensitive Adhesives

Influence of Acrylic Acid and Tert-Dodecyl Mercaptan in the Adhesive Performance of Water-Based Acrylic Pressure-Sensitive Adhesives

Noncorrosive Pressure-Sensitive Adhesives of Acryl Polymers by Sulfur-Free Addition–Fragmentation Chain Transfer Agents

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