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<p>Polystyrene (PS) does not contain polar groups and atoms in its molecular structure, so it has the application prospect of preparing hydrophobic or super-hydrophobic materials. However, the common film-making method limits the application of polystyrene films in hydrophobic materials. In this paper, the ultra-high molecular weight polystyrene was prepared by emulsion polymerization at room temperature, and then the porous polystyrene fiber membrane was prepared by microfluidic nano blow spinning technology. The effects of the type of solvent and the concentration of spinning solution on the mechanical properties and hydrophobic properties of the polystyrene porous fiber film were investigated, and compared with that of general-purpose polystyrene fiber film. The results show that when dichloromethane (DCM) is used as the solvent of spinning solution, the obtained ultra-high molecular weight polystyrene fiber film has the porous structure and the best mechanical properties. The tensile strength is 0.94&#xa0;MPa, which is 5.9 times that of the general-purpose polystyrene fiber film (0.16&#xa0;MPa). The elongation at break is 83.1%, which is 32 times that of the general-purpose polystyrene fiber film (2.6%). At the same time, the ultra-high molecular weight polystyrene fiber film prepared under this condition also has certain hydrophobic properties (water contact Angle is 117° &gt; 90°).</p>

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Preparation and properties of ultra-high molecular weight polystyrene porous fiber membrane

  • 期刊论文

  • 发表日期：

    2025年4月5日

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  • Jianhan Li,
  • Hongjun Yang,
  • Qimin Jiang,
  • Bibiao Jiang,
  • Li Jiang,
  • Xiaoqiang Xue,
  • Wenyan Huang

摘要

Polystyrene (PS) does not contain polar groups and atoms in its molecular structure, so it has the application prospect of preparing hydrophobic or super-hydrophobic materials. However, the common film-making method limits the application of polystyrene films in hydrophobic materials. In this paper, the ultra-high molecular weight polystyrene was prepared by emulsion polymerization at room temperature, and then the porous polystyrene fiber membrane was prepared by microfluidic nano blow spinning technology. The effects of the type of solvent and the concentration of spinning solution on the mechanical properties and hydrophobic properties of the polystyrene porous fiber film were investigated, and compared with that of general-purpose polystyrene fiber film. The results show that when dichloromethane (DCM) is used as the solvent of spinning solution, the obtained ultra-high molecular weight polystyrene fiber film has the porous structure and the best mechanical properties. The tensile strength is 0.94 MPa, which is 5.9 times that of the general-purpose polystyrene fiber film (0.16 MPa). The elongation at break is 83.1%, which is 32 times that of the general-purpose polystyrene fiber film (2.6%). At the same time, the ultra-high molecular weight polystyrene fiber film prepared under this condition also has certain hydrophobic properties (water contact Angle is 117° > 90°).