Polyion liquid aqueous two-phase system capable of inducing reversible phase separation through host-guest interaction and application of polyion liquid aqueous two-phase system

• Main Authors: SHEN YONGMIAO, XIONG YUBING, CHEN ZHENGHAI, WANG XINWEI, XIANG FEIYONG, PENG WEIPING
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; 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; SEPARATION; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING

The invention provides a polyion liquid aqueous two-phase system for reversible phase separation induced by subject-object interaction and application, and belongs to the technical field of phase separation. The aqueous two-phase system takes PVImBnxEt + PVImAzo5Et + CB [8] as components, the aqueous two-phase system has a reversible response behavior under light/thermal stimulation, PVImBnxEt is obtained by taking polyvinyl imidazole as a main chain structure and grafting benzyl (Bn), PVImAzo5Et is obtained by taking polyvinyl imidazole as a main chain structure and grafting azobenzene (Azo), and x is 10-40. When the material is used for separating and purifying triphenylmethane and rhodamine B, temperature response and light response in the purification process can be realized, and the material has the advantages of no contact, quick response and the like. 本申请提供一种主客体作用诱导可逆相分离的聚离子液体双水相体系及应用，属于相分离技术领域。双水相体系以PVImBnxEt+PVImAzo5Et+CB[8]为组分，双水相体系在光/热刺激下具有可逆响应行为，其中PVImBnxEt是以聚乙烯基咪唑为主链结构，接枝苄基（Bn）得到，所述PVImAzo5Et是以聚乙