Scholarlink

<p>Here, the isothermal disperse dyeing kinetics of a chemically modified PET/spandex blend—poly(ethylene terephthalate-co-polyethylene glycol) (PCP)/spandex (80:20)—were investigated and compared with those of a conventional PET/spandex blend using C.I. Disperse Red 60 and C.I. Disperse Red 167. Component-resolved rate-of-dyeing curves were obtained by independently quantifying dye uptake in the polyester and spandex phases during isothermal dyeing at 100–130&#xa0;°C. Both blends exhibited time-dependent dye redistribution at extended dyeing times, evidenced by polyester uptake reaching a plateau or decreasing while spandex uptake continued to increase. The diffusion coefficients confirmed strong phase selectivity, with spandex diffusivities being one to two orders of magnitude higher than those of the polyester phases; Red 167 showed particularly high spandex diffusivity, consistent with its greater staining propensity. Arrhenius analysis further supported substrate effects: for Red 60, PET exhibited a high activation energy compared with PCP, indicating that PEG modification substantially lowers the thermal barrier for polyester-phase transport. Within the reduced-temperature window relevant to spandex-containing substrates (110–120&#xa0;°C), PCP/spandex achieved higher polyester-phase uptake than PET/spandex and reduced spandex staining within practical dyeing times (≤ 60&#xa0;min). Overall, the component-resolved kinetic framework clarifies how redistribution governs phase-specific uptake and supports chemically modified PET/spandex blends as more effective substrate system for low-temperature disperse dyeing.</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

Component-Resolved Kinetics of Low-Temperature Disperse Dyeing in Chemically Modified PET/Spandex Blends

  • 期刊论文

  • 发表日期：

    2026年4月1日

查看全文
  • Md Morshedur Rahman,
  • Shekh Md Mamun Kabir,
  • Ingi Hong,
  • Nazrul Hsan,
  • Soohyun Kim,
  • Youngdae Kim,
  • Seunga Choi,
  • Young je Seong,
  • Santosh Kumar,
  • Joonseok Koh

摘要

Here, the isothermal disperse dyeing kinetics of a chemically modified PET/spandex blend—poly(ethylene terephthalate-co-polyethylene glycol) (PCP)/spandex (80:20)—were investigated and compared with those of a conventional PET/spandex blend using C.I. Disperse Red 60 and C.I. Disperse Red 167. Component-resolved rate-of-dyeing curves were obtained by independently quantifying dye uptake in the polyester and spandex phases during isothermal dyeing at 100–130 °C. Both blends exhibited time-dependent dye redistribution at extended dyeing times, evidenced by polyester uptake reaching a plateau or decreasing while spandex uptake continued to increase. The diffusion coefficients confirmed strong phase selectivity, with spandex diffusivities being one to two orders of magnitude higher than those of the polyester phases; Red 167 showed particularly high spandex diffusivity, consistent with its greater staining propensity. Arrhenius analysis further supported substrate effects: for Red 60, PET exhibited a high activation energy compared with PCP, indicating that PEG modification substantially lowers the thermal barrier for polyester-phase transport. Within the reduced-temperature window relevant to spandex-containing substrates (110–120 °C), PCP/spandex achieved higher polyester-phase uptake than PET/spandex and reduced spandex staining within practical dyeing times (≤ 60 min). Overall, the component-resolved kinetic framework clarifies how redistribution governs phase-specific uptake and supports chemically modified PET/spandex blends as more effective substrate system for low-temperature disperse dyeing.