Preparation method of biodegradable PBS (Phosphate Buffer Solution) parallel crimped elastic fiber

• Main Authors: CHEN YONG, WANG ZHAOSHENG, WANG HUAPING, WU JING
• Format: Patent
• Language: Chinese; English
• Published: 22.03.2024
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; METALLURGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; ORGANIC MACROMOLECULAR COMPOUNDS; SPINNING; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention relates to a preparation method of biodegradable PBS (Phosphate Buffer Solution) parallel crimped elastic fibers, which is characterized in that two polyesters with different intrinsic viscosities are subjected to parallel composite spinning, and the two polyesters with different intrinsic viscosities are respectively a PBS low-viscosity branched modified polymer and a PBS high-viscosity blended polymer; the PBS low-viscosity branched modified polymer is obtained by copolymerizing a multi-arm branching agent, succinic acid and butanediol; the PBS high-viscosity blend polymer is obtained by blending a polyester flow modifier and PBS; the absolute value of the MFR difference value of the PBS low-viscosity branched modified polymer and the PBS high-viscosity blended polymer at the spinning temperature is smaller than 30 g/10 min. The preparation method is simple and easy to operate, industrial production is easy, raw materials used for processing are environmentally friendly, and the finally prepar