Immobilization of carbonic anhydrase on modified PES membranes for artificial lungs

Wang, Yi; Cheng, Chong; Li, Shuang; Sun, Shudong; Zhao, Changsheng

doi:10.1039/d3tb02553e

J. Mater. Chem. B

2024

DOI: 10.1039/d3tb02553e

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Immobilization of carbonic anhydrase on modified PES membranes for artificial lungs

Yi Wang,

Chong Cheng,

Shuang Li

et al.

Abstract: We graft carbonic anhydrase (CA) efficiently onto modified polyethersulfone (PES) membranes with good blood compatibility and maintain the catalytic activity of CA for HCO3− to CO2 conversion, which is exactly what the membrane of artificial lungs need.

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Fabrication of PBAT Membranes with High Separation Accuracy Based on Inverse-Opal-Structural Photonic Crystals

Wang,

Fan,

Lai

et al. 2024

ACS Appl. Mater. Interfaces

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Membrane technology is one of the most effective ways to cope with the filtration and separation. However, most polymer membranes are not uniform in pore size and have wide pore size distributions and low porosities, which restrict their application. A high-porosity homogeneous membrane with high filtration accuracy is an effective solution. Photonic crystals (PCs) with an inverse-opal (IO) structure provide a new way for preparing high-porosity homogeneous porous membranes. In this study, a rapid shear-induced assembly method for preparing biodegradable poly(butylene adipate-co-terephthalate) (PBAT) membranes based on PCs with an IO structure was proposed, and the design principles of the IO-structured PBAT membrane were investigated. Moreover, the effects of polymer solution concentrations, solvent evaporation temperature, and SiO 2 /PBAT mass ratio on the SiO 2 /PBAT PC structure, formation mechanism of shear-induced assembly, and the filtering efficiency of resultant PBAT membranes for solid−liquid separation were investigated. The study underscored the point that when the polymer concentration is in the range of 15−20 wt % and the drying temperature is at 80 °C, as the SiO 2 -to-PBAT mass ratio increases, the pore of the membrane increases, the porosity is as high as to 84.11%, and pure water flux is up to 756.19 L m −2 h −1 . After five cycles, the rejection rate of PBAT membranes for the contaminant still reached more than 99%. This study proposes a simple and rapid method for constructing an IO-structured membrane that is expected to address challenges encountered in achieving efficient and high-precision separation.

show abstract

Fabrication of PBAT Membranes with High Separation Accuracy Based on Inverse-Opal-Structural Photonic Crystals

Wang,

Fan,

Lai

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

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Immobilization of carbonic anhydrase on modified PES membranes for artificial lungs

Abstract: We graft carbonic anhydrase (CA) efficiently onto modified polyethersulfone (PES) membranes with good blood compatibility and maintain the catalytic activity of CA for HCO3− to CO2 conversion, which is exactly what the membrane of artificial lungs need.

Cited by 1 publication

References 71 publications

Fabrication of PBAT Membranes with High Separation Accuracy Based on Inverse-Opal-Structural Photonic Crystals

Fabrication of PBAT Membranes with High Separation Accuracy Based on Inverse-Opal-Structural Photonic Crystals

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