关键词: 极性溶剂, 二甲基乙酰胺, 间位芳纶纤维, 结构与性能, 分散染料

Abstract: Dyeing difficulty of maramid fiber restricts its application in textile fabric. This paper uses polar solvent for maramid fiber pretreatment and discusses the influence of DMAc treatment with polar solvent on the structure and properties of maramid fiber. The study shows that hydrogen bond structure, crystal structure and morphological structure of maramid fiber change greatly after DMAc treatment, thus causing the change of mechanical property of fiber and great improvement of dye uptake of disperse dyes.

Key words: polar solvent, DMAc, m-aramid fiber, structure and properties, disperse dye