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<p>In this research, an amphiphilic sodium alginate (SSA) was prepared by grafting styrene (St) onto sodium alginate (SA) to serve as a dispersant for preparing copper phthalocyanine (CuPc) pigment dispersion (SSA-CuPc). The results indicated that SSA exhibited optimal dispersibility for CuPc at 20% dosage. Compared to SA, the SSA-CuPc particle size was reduced by 63.61%, zeta potential from −&#xa0;15.30&#xa0;mV to −&#xa0;29.16&#xa0;mV. FT-IR, XPS, and TG analyses confirmed the effective binding of SSA on CuPc surface. The SSA-CuPc dispersion displayed excellent stability and compatibility in SA solution, with stability R value decreased to 5.66%. The SSA-CuPc was incorporated into SA spinning solution to fabricate dope-dyed SA fibers by wet spinning. Rheological tests revealed enhanced compatibility between SSA-CuPc and SA matrix, favorable for wet-spinning processing. Mechanical tests indicated a 35.33% improvement in elongation at break for dope-dyed SA fibers compared to original SA fibers. SEM, FT-IR, and TG analyses further verified the uniform distribution and stable existence of SSA-CuPc in SA fibers.</p>

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Utilizing Polystyrene Grafted Amphiphilic Sodium Alginate to Disperse CuPc Pigment for Preparing Dope-Dyed Sodium Alginate Fibers

  • 期刊论文

  • 发表日期：

    2025年8月17日

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  • Guoan Bin,
  • Jiali Song,
  • Yichen Liu,
  • Longyun Hao

摘要

In this research, an amphiphilic sodium alginate (SSA) was prepared by grafting styrene (St) onto sodium alginate (SA) to serve as a dispersant for preparing copper phthalocyanine (CuPc) pigment dispersion (SSA-CuPc). The results indicated that SSA exhibited optimal dispersibility for CuPc at 20% dosage. Compared to SA, the SSA-CuPc particle size was reduced by 63.61%, zeta potential from − 15.30 mV to − 29.16 mV. FT-IR, XPS, and TG analyses confirmed the effective binding of SSA on CuPc surface. The SSA-CuPc dispersion displayed excellent stability and compatibility in SA solution, with stability R value decreased to 5.66%. The SSA-CuPc was incorporated into SA spinning solution to fabricate dope-dyed SA fibers by wet spinning. Rheological tests revealed enhanced compatibility between SSA-CuPc and SA matrix, favorable for wet-spinning processing. Mechanical tests indicated a 35.33% improvement in elongation at break for dope-dyed SA fibers compared to original SA fibers. SEM, FT-IR, and TG analyses further verified the uniform distribution and stable existence of SSA-CuPc in SA fibers.