Perfluorinated ionic polymer with bipyridine side group as well as synthesis method and application of perfluorinated ionic polymer

• Main Authors: WANG LI, DING HAN, ZOU YECHENG, LIU XUNDAO, ZHANG SHUO, ZHANG HENG, ZHANG YONGMING
• Format: Patent
• Language: Chinese; English
• Published: 28.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRICITY; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SEPARATION; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention provides a perfluorinated ionic polymer with a bipyridine side group, the structural unit of the polymer comprises a unit A and a unit B, the unit A is a bipyridine structural unit and comprises a pyridine group M and a perfluoroether structural unit, and the unit B comprises an ionic group-SO3H and a perfluoroether structural unit. The polymer and the application product thereof have the following advantages: (1) an ultra-stable dominant unit-(CF2CF2) x-of a perfluoropolymer is retained, and sufficient mechanical strength and thermal stability of the polymer are guaranteed; and (2) chemical grafting is carried out on the terminal group of the side chain of the perfluorovinyl sulfonyl fluororesin, and the introduced functional bipyridine structure can effectively capture or quench free radicals, so that the degradation of the polymer is weakened or slowed down. (3) the perfluorinated ionic polymer meeting various requirements on ion exchange capacity IEC and chemical stability can be synthesized