Synthesis and application of multifunctional auxiliaries for high-temperature, high-pressure dyeing of polyester
Source abstract
Abstract
The high-temperature, high-pressure (HTHP) dyeing of polyester with disperse dyes faces challenges including process complexity, excessive wastewater, high energy demands, and ecological risks. This study developed a multifunctional dyeing auxiliary via ester interchange polycondensation, specifically optimized for HTHP polyester systems. The synthesized agent integrates dispersing, leveling, retarding, and postdyeing cleaning functionalities. Among the variants, DESI30 (DMT: SIPM = 7:3, M w = 28,283 Da) exhibited optimal performance, demonstrating exceptional thermal stability (maximum decomposition rate temperature >400°C) and interfacial activity. At 1.0 g/l, DESI30 reduced aqueous surface tension from 71.75 to 56.39 mN/m while maintaining stable foaming properties. It enhanced Disperse Orange 30 solubility (0.035 → 0.16 g/l at 0.50 g/l) and improved Disperse Red FB migration (CIE Δ E : 6.43 → 0.95 at 2.0 g/l). Washing-treatment with DESI30 (4.0 g/l, 80°C, 20 min) achieved level 4 staining fastness for Disperse Blue HRD (3.0% o.w.f.) on cotton/polyester. This auxiliary shortens dyeing cycles, reduces water and energy consumption, and offers a sustainable alternative for industrial polyester dyeing.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Dyeing and Modifying Textile Fibers · Polymer composites and self-healing · Polymer Foaming and Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry and Chemical Engineering, Innovation Center for Textile Science and Technology, Donghua University, Shanghai, People’s Republic of China
Tarim University
National Manufacturing Innovation Center of Advanced Dyeing and Finishing Technology, Taian City, Shandong Province, People’s Republic of China
Funding
the Science and Technology Plan Project of XPCC
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