Polyimide chopped fiber adsorbent and application thereof

• Main Authors: CHEN XIAOJING, YANG ZHENGGEN, LIN ZHENNAN, CHEN XIAOYUAN, AN HONGTAO
• Format: Patent
• Language: Chinese; English
• Published: 02.02.2024
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a polyimide chopped fiber adsorbent, an adsorbent carrier is polyimide chopped fiber, and the polyimide chopped fiber is prepared by the following steps: carrying out condensation polymerization on diamine and dianhydride in a strong polar solution to obtain a polyamide acid solution, adding a water-soluble pore-foaming agent, and carrying out dry or wet spinning to obtain the polyimide chopped fiber adsorbent. Drafting and cutting the prepared polyamide acid hollow fiber into 1-10mm chopped fiber, cleaning and drying, soaking in a ligand solution, and reacting to obtain the polyimide chopped fiber adsorbent. The polyimide chopped fiber is partially imidized, a large number of carboxyl groups are reserved on the surface and inside the fiber, the carrier can be coupled with the ligand without pre-activation, the preparation process is simple, the hydrophilicity of the chopped fiber is remarkably improved, the biocompatibility of the adsorbent is improved, and the adsorbent can be better