A kind of ultra-high molecular weight polyethylene oxide fiber and preparation method thereof

Abstract

The invention discloses an ultra-high molecular weight polyethylene oxide fiber and a preparation method thereof. The preparation method includes: providing a spinning solution comprising ultra-high molecular weight polyethylene oxide, an antioxidant and a spinning solvent, the spinning solvent including water, dimethyl sulfoxide, methanol, tetrahydrofuran, toluene, benzene, N , N-dimethylformamide and 1,4-dioxane, etc., after dissolution, the molecular weight of the ultra-high molecular weight polyethylene oxide is more than 70% compared with the raw material retention rate; using wet spinning method, the spinning The solution is injected into a coagulation bath to coagulate and fix to obtain jelly filaments, which are then extracted and dried to obtain ultra-high molecular weight polyethylene oxide extracted and dried fibers, which are then thermally drawn to obtain ultra-high molecular weight polyethylene oxide fibers. The ultra-high molecular weight polyethylene oxide fiber of the present invention has better mechanical properties, higher fiber molecular weight retention rate than raw materials, high molecular weight and high orientation degree, and the preparation method is stable and feasible, and is convenient for large-scale production.

Description

technical field

[0001] The invention relates to a polyethylene oxide fiber, in particular to an ultra-high molecular weight polyethylene oxide fiber and a preparation method thereof, belonging to the technical field of polymer materials. Background technique

[0002] Polyethylene oxide (PEO), also known as polyethylene oxide, is a high molecular weight homopolymer formed by heterogeneously catalyzed ring-opening polymerization of ethylene oxide. The oxygen atoms on the PEO molecular chain have non-shared electron pairs, which have a strong affinity for electron-deficient substances; they have good water solubility, good biocompatibility and biodegradability, and have a very wide range of applications. For example, PEO can form complexes with many organic low-molecular compounds, organic polymers, and some inorganic electrolytes to be used as polymer electrolyte matrix materials; 2 It has a strong quadrangular dipole effect and can be used to prepare gas separation membranes...