In order to obtain membranes with both organic separation and adsorption functions, knitted tube composite β-cyclodextrin/chitosan (β-CD/CS) porous membranes were prepared by the non-solvent induced phase separation (NIPS) method using CS and β-CD as a membrane-forming matrix, glutaraldehyde as crosslinking agent to improve water stability, and knitted tube as reinforcement to enhance the mechanical properties. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), contact angle, water flux, bovine serum albumin (BSA) rejection and tensile test were carried out. The FTIR demonstrated that the β-CD and CS had been successfully crosslinked. With the crosslinking time increased, the membrane structure became denser, the contact angle and the rejection rate increased, while the water flux decreased. The strength and elongation at a break were 236 and 1.7 times higher than these of bare β-CD/CS porous membranes, respectively. The strength of crosslinking membranes increased further. The adsorption performance of composite membranes was investigated for the removal of phenolphthalein (PP) from aqueous solution. The adsorption process followed the Langmuir isotherm model, and the kinetic behavior was accorded with the Double constant equation and the Elovich equation. The adsorption mechanism could be explained by the synergistic effect of host-guest interaction from β-cyclodextrin, non-uniform diffusion and porous network capture.

The purpose of this study was to reduce the severe shrinkage of the UHMWPE membrane during low‐concentration molding processing. In this study, using SiO2 inorganic particles as inner reinforced materials and copper fibers as core support bodies significantly improved the structural stability of the membrane. Compared with the UHMWPE membrane, the shrinkage of the length and diameter of the Cu@UHMWPE/SiO2 membranes decreased by 84% and 61%, respectively, and the pure water flux increased by 322%. Copper fiber as a support material reduced the shrinkage of the membrane and improved pore connectivity. The tensile strength of Cu@UHMWPE/SiO2 was 6.8 MPa. Additionally, the Cu@UHMWPE/SiO2 membrane exerted a better antifouling performance. This study provided a new method to improve the structural stability of the UHMWPE membrane.