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<p>The paper examines the influence of the chain length of the copolymer comprising naturally derived carbon from the bio-monomer on the minimal film-forming temperature of dispersion and the polymeric film’s glass transition temperature, but also the mechanical properties of such a binder in the decorative, low pigment volume concentration paint formulation. The effect of n-dodecyl mercaptan in different weight ratios as a chain transfer agent on the molecular weight of copolymer synthesis in aqueous dispersed media has been investigated. This study confirms its significant role in the termination of physical chains of growing polymers during emulsion polymerization, which has a great impact on the end properties of the dispersion. Partially bio-based polymers with different chain lengths have been examined as a fully petrochemical binder substitute for pigment-binding capacity through wet scrubbing resistance measures for paint coating to assess their suitability and competitiveness compared to acrylic dispersions widely used in this application.</p>

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Influence of copolymer chain length on film formation and wet scrub resistance of acrylic latex paints containing a bio-based methacrylate comonomer

  • 期刊论文

  • 发表日期：

    2026年7月22日

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  • Ł. Radkiewicz,
  • W. Górzyński,
  • A. Iuliano,
  • A. Plichta

摘要

The paper examines the influence of the chain length of the copolymer comprising naturally derived carbon from the bio-monomer on the minimal film-forming temperature of dispersion and the polymeric film’s glass transition temperature, but also the mechanical properties of such a binder in the decorative, low pigment volume concentration paint formulation. The effect of n-dodecyl mercaptan in different weight ratios as a chain transfer agent on the molecular weight of copolymer synthesis in aqueous dispersed media has been investigated. This study confirms its significant role in the termination of physical chains of growing polymers during emulsion polymerization, which has a great impact on the end properties of the dispersion. Partially bio-based polymers with different chain lengths have been examined as a fully petrochemical binder substitute for pigment-binding capacity through wet scrubbing resistance measures for paint coating to assess their suitability and competitiveness compared to acrylic dispersions widely used in this application.