Scholarlink

<p>Clay-polymer nanocomposites have attracted extensive attention because of their improved properties. It is particularly desirable to explore the effects of different clays on the preparation and performances of their nanocomposites. In this paper, a rod-shaped organo-attapulgite (OATP) was used to prepare the clay-polymer nanocomposites by emulsion polymerization of methyl 2-methacrylate, n-butyl acrylate and hydroxypropyl acrylate. It was found that OATP had a unique influence on the emulsion polymerization, the polyacrylate structure and the performances of composite latex and its film. For the emulsion polymerization, the conversion of monomers decreased and the coagulum rate increased with increasing OATP from 0.1 to 0.9&#xa0;mass%. However, the molecular weight of polyacrylate increased significantly, and the ratio of monomers in the polymer was gradually close to the feeding ratio. Furthermore, the addition of OATP led to long and large-sized latex particles, as well as a decrease in the viscosity and chemical stability of latex, but the thermal stability, pencil hardness and adhesion of latex films were improved. For optimal performance, a suitable amount of OATP addition was 0.6&#xa0;mass%. In summary, OATP/polyacrylate nanocomposite latex has potential application prospects as a new composite coating material.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Synthesis of organo-attapulgite/polyacrylate nanocomposite latex by soap-free emulsion polymerization and its enhanced film properties

  • 期刊论文

  • 发表日期：

    2025年1月9日

查看全文
  • Yanhong Zhu,
  • Qin Shen,
  • Fengqin Shen,
  • Jianfeng Zhu,
  • Ming Zhou,
  • Chao Yao,
  • Jianhong Yang

摘要

Clay-polymer nanocomposites have attracted extensive attention because of their improved properties. It is particularly desirable to explore the effects of different clays on the preparation and performances of their nanocomposites. In this paper, a rod-shaped organo-attapulgite (OATP) was used to prepare the clay-polymer nanocomposites by emulsion polymerization of methyl 2-methacrylate, n-butyl acrylate and hydroxypropyl acrylate. It was found that OATP had a unique influence on the emulsion polymerization, the polyacrylate structure and the performances of composite latex and its film. For the emulsion polymerization, the conversion of monomers decreased and the coagulum rate increased with increasing OATP from 0.1 to 0.9 mass%. However, the molecular weight of polyacrylate increased significantly, and the ratio of monomers in the polymer was gradually close to the feeding ratio. Furthermore, the addition of OATP led to long and large-sized latex particles, as well as a decrease in the viscosity and chemical stability of latex, but the thermal stability, pencil hardness and adhesion of latex films were improved. For optimal performance, a suitable amount of OATP addition was 0.6 mass%. In summary, OATP/polyacrylate nanocomposite latex has potential application prospects as a new composite coating material.