Dimethyl Sulfoxide and Sodium Chloride Modulate the Crystal Structure in PMIA to Enhance Dyeing Performance: Molecular Dynamics Simulation and Experimental Investigations.

ABSTRACT: The widespread use of meta-aramid (PMIA) is limited by its poor dyeing performance, and researchers often struggle to qualitatively and quantitatively assess its microscopic structural regulation when attempting to improve dyeing performance. Herein, DMSO/NaCl is chosen to synergistically modulate the structure of PMIA to improve its dyeing properties in combination with experiments and simulations. Initially, characterization and color testing reveal that the DMSO/NaCl combination induces structural changes in the amorphous regions of the PMIA fiber, improving the dispersion of the dye solution. Notably, PMIA exhibited a significant improvement in dyeing performance, with the K/S value increasing from 2.6 to 16.0 and dye uptake rising from 20.4% to 73.2%, while maintaining excellent color

SUBMITTER: Zhuo Y 

PROVIDER: S-EPMC12005731 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature