Scholarlink

<p>In this study, Fe₃O₄ nanoparticles were utilized as stabilizers to construct a Pickering emulsion system for the copolymerization of styrene (St) and acrylamide (AM). The emulsion stability was systematically optimized by varying the Fe₃O₄ nanoparticle concentration in the range of 0.09–0.16 wt% and adjusting the oil-to-water ratio. A comparative study was carried out to evaluate the effects of an oil-soluble initiator AIBN, versus a dual-initiator system comprising AIBN and ammonium persulfate (APS) on the copolymerization kinetics. The successful synthesis of St-AM copolymer in the composite was confirmed by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). Thermogravimetric analysis (TGA) revealed that introducing APS significantly enhanced the thermal stability of the resulting composite. Specifically, the temperature corresponding to a 5% weight loss (T₅%) increased from 130&#xa0;°C to 228&#xa0;°C, while the residual char yield at 800&#xa0;°C reached 14.43%. Scanning electron microscopy (SEM) further demonstrated that the composite matrix contained uniformly embedded spherical microparticles with well-defined dimensions. These results validate the successful polymerization of the nano-Fe₃O₄-stabilized St /AM Pickering emulsion using the AIBN/APS dual-initiator system, leading to the formation of styrene /acrylamide composite microspheres. This study provides valuable experimental insights and process references for developing novel polymer composites.</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

Fabrication of styrene-acrylamide composites via Fe₃O₄-stabilized pickering emulsion copolymerization

  • 期刊论文

  • 发表日期：

    2026年2月24日

查看全文
  • Guomei Xu,
  • Yueqi Tan,
  • Shusheng Gong,
  • Shina Liu,
  • Tingting Yu,
  • Hanjie Ying,
  • Hongxue Xie

摘要

In this study, Fe₃O₄ nanoparticles were utilized as stabilizers to construct a Pickering emulsion system for the copolymerization of styrene (St) and acrylamide (AM). The emulsion stability was systematically optimized by varying the Fe₃O₄ nanoparticle concentration in the range of 0.09–0.16 wt% and adjusting the oil-to-water ratio. A comparative study was carried out to evaluate the effects of an oil-soluble initiator AIBN, versus a dual-initiator system comprising AIBN and ammonium persulfate (APS) on the copolymerization kinetics. The successful synthesis of St-AM copolymer in the composite was confirmed by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). Thermogravimetric analysis (TGA) revealed that introducing APS significantly enhanced the thermal stability of the resulting composite. Specifically, the temperature corresponding to a 5% weight loss (T₅%) increased from 130 °C to 228 °C, while the residual char yield at 800 °C reached 14.43%. Scanning electron microscopy (SEM) further demonstrated that the composite matrix contained uniformly embedded spherical microparticles with well-defined dimensions. These results validate the successful polymerization of the nano-Fe₃O₄-stabilized St /AM Pickering emulsion using the AIBN/APS dual-initiator system, leading to the formation of styrene /acrylamide composite microspheres. This study provides valuable experimental insights and process references for developing novel polymer composites.