公开(公告)号：US20210202972A1

公开(公告)日：2021-07-01

申请号：US17269835

申请日：2020-03-19

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xuemei WU ,  Gaohong HE ,  Xiaozhou WANG ,  Xiaoming YAN ,  Tiantian LI ,  Wanting CHEN ,  Xiangcun LI ,  Wu XIAO ,  Xiaobin JIANG ,  Fujun CUI ,  Yan DAI ,  Xuehua RUAN

IPC: H01M8/1072 ,  C08G73/18 ,  H01M8/1067

Abstract: The present invention belongs to the field of alkaline polymer electrolyte membranes, and relates to a comb-shaped structure polybenzimidazole anion exchange membrane with high conductivity and preparation method thereof. In the invention, firstly, polybenzimidazole is grafted with the non-cationic side chains to the max grafting rate to synthesize the de-protonated comb-shaped polybenzimidazole material, avoiding the N—H in benzimidazole forms ionic binding with cationic functional groups, which will reduce the reactivity and mobility of cationic groups; then react de-protonated comb-shaped polybenzimidazole with quaternization reagent to attach the pendent side chain with cationic functional groups, making it easy to aggregate to form ion clusters and hydrophilic/hydrophobic microphase separation. The anion exchange membrane prepared in this invention has excellent conductivity, mechanical properties and alkaline stability.

公开(公告)号：US20250091015A1

公开(公告)日：2025-03-20

申请号：US18570497

申请日：2023-05-29

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xuehua RUAN ,  Gaohong HE ,  Weixiang FAN ,  Jiaming WANG ,  Wenji ZHENG ,  Xiaobin JIANG ,  Xiaoming YAN ,  Wu XIAO ,  Qinzheng HE

IPC: B01D67/00 ,  B01D53/22 ,  B01D69/02 ,  B01D71/52

Abstract: A large-scale fabrication technique for PIM-1 asymmetric membranes doped with low-molecular-weight polyethylene glycol for gas separation. Based on the membrane fabrication technique of dry/wet phase inversion, firstly, the coagulation process of casting solution is regulated by low-molecular-weight polyethylene glycol to thin the dense functional layer, to improve the hydrophilicity of the membrane structure, and to form mass transfer channels for the diffusion of polyethylene glycol into the dense functional layer. Then, directional migration and enrichment of polyethylene glycol are realized through capillary action induced by directional water evaporation for large-scale fabrication of PIM-1 asymmetric membranes doped with low-molecular-weight polyethylene glycol in the dense functional layer for gas separation, and thereafter high permeation ability and high selectivity are achieved simultaneously.

公开(公告)号：US20230146223A1

公开(公告)日：2023-05-11

申请号：US17914974

申请日：2021-06-18

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xiaobin JIANG ,  Peipei LI ,  Menghang LI ,  Zhijie YUAN ,  Gaohong HE ,  Wu XIAO ,  Xiangcun LI ,  Xuemei WU

IPC: C12N15/10 ,  B33Y80/00

CPC classification number: C12N15/1006 ,  B33Y80/00 ,  B29C64/124

Abstract: The present invention discloses a nucleic acids extraction system and method based on a 3D-printed microdevice, and belongs to the technical field of nucleic acids extraction. The nucleic acids extraction system is a monomer 3D-printed microdevice or a 3D-printed microdevice prepared by 3D printing technologies, the monomer 3D-printed microdevice comprises a nucleic acids binding region and a handle region, and the 3D-printed microdevice is composed of more than two monomer 3D-printed microdevices through a joining region; and the nucleic acids binding region is made of photosensitive resin or thermoplastic. An extraction method for the nucleic acids extraction system based on a 3D-printed microdevice is used to bind, clean and elute nucleic acids by moving the monomer 3D-printed microdevice or the 3D-printed microdevice among a solution containing target nucleic acids, a washing buffer and an elution buffer.

公开(公告)号：US20200114277A1

公开(公告)日：2020-04-16

申请号：US16314773

申请日：2017-11-03

Applicant: Dalian University of Technology

Inventor： Xiaobin JIANG ,  Guannan LI ,  Gaohong HE ,  Linghan TUO ,  Dapeng LU ,  Wu XIAO ,  Xiangcun LI ,  Xuemei WU

IPC: B01D9/00

Abstract: The present invention provides a continuous crystallization method under control of the multistage membrane modules, and belongs to the technical field of crystallization engineering. A crystallization solution is added to a crystallizer, and a stirring apparatus and a temperature control apparatus are started. After the system running stability, the loop of crystallization is started. Meanwhile, the coolant or antisolvent feed liquid loop is also started. The crystallization solution can respectively conduct crystal nucleation, growth and ripening in the multistage membrane modules, and then the crystallization solution is transported into a filter device and a drying apparatus to obtain the final crystal products. The desired crystal products can be obtained by the systematical control of the nucleation and crystal growth through the flow and the temperature of the crystallization solution, coolant or antisolvent feed liquid, and the contact time between two liquid phases.