贾长超   

个人简历:贾长超,青岛科技大学副教授,硕士生导师。长期从事半导体纳米材料可控合成及能源转换与存储研究,聚焦于纳米材料光催化研究,已在Adv. Funct. Mater.、 Chem. Eng. J.、Carbon、ACS Appl. Mater. Interfaces、Inorg. Chem. Front.等期刊发表SCI学术论文30余篇,授权发明专利10余项。主持山东省自然科学基金青年项目、中国博士后面上项目、青岛市自然科学基金原创探索项目等5项。获2019年山东省优秀博士学位论文。中...Detials

Polyethylene/poly (N, N-dimethyl acrylamide) hybrid hydrogel membrane for total heat exchanger

Release time:2023-10-19  Hits:

  • Key Words:WATER-VAPOR PERMEATION; COMPOSITE MEMBRANES; RECOVERY; MOISTURE; PERFORMANCE; PLATE
  • Abstract:For the total heat exchange membrane, there is a compromise effect between the moisture permeability and the gas barrier. To overcome this challenge, a new type of total heat exchange membrane was proposed involving a porous polyethylene (PE) membrane and a hydrophilic poly (N, N-dimethyl acrylamide) (PDMAA) hydrogel. A dense PE/PDMAA composite membrane was fabricated via an in situ photoinitiated free-radical polymerization and cross-linking reaction through a pre-permeation of N, N-dimethyl acrylamide (DMAA) monomers in the porous structure of the PE membrane. In this study, we systematically investigated the effect of varying amounts of PDMAA filler on membrane morphology, hydrophilicity, stability, mechanical properties, water vapor transmission rate, gas barrier property, and total heat exchange efficiency. These results demonstrate that a tight, stable PE/PDMAA hybrid membrane with an interlocked structure has been created. Water vapor diffusion channels and an efficient carbon dioxide (CO2) barrier were successfully constructed through the introduction of a cross-linked PDMAA hydrogel. Improvements in water vapor transmission rate and reduction in CO2 transmission rate were achieved simultaneously with increasing PDMAA filling amount. Excellent mechanical properties and hybrid stability were also observed for the composite membrane obtained. This work provides a novel total heat exchange membrane with convenient production process, low cost and high durability characteristics.
  • Volume:470
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  • Translation or Not:no