Dual-functionalization of polymeric membranes via cyclodextrin-based host-guest assembly for biofouling control

Rapid, Selective Adsorption of Methylene Blue from Aqueous Solution by Durable Nanofibrous Membranes

“…FTIR measurements were performed to explore the chemical structures of CM-β-CDP and PBSST- g -β-CDP nanofibrous membranes, as shown in Figure a,b. The peak at around 1715 cm –1 for CM-β-CDP was ascribed to the −CO, whereas new peaks at around 1643 and 1546 cm –1 for PBSST- g -β-CDP nanofibrous membranes were the indication of −NH–CO formation, which demonstrated that CM-β-CDP was chemically grafted into PBSST nanofibrous membranes through the amidation reaction between −NH 2 of PBSST and −COOH of CM-β-CDP. , Meanwhile, the peak at about 3410 cm –1 corresponded to the stretching vibration of −OH of the as-prepared nanofibrous membranes, and the presence of −OH was beneficial to increase the adsorption capacity of the adsorbent to pollutants. , …”

“…25,26 Meanwhile, the peak at about 3410 cm −1 corresponded to the stretching vibration of −OH of the as-prepared nanofibrous membranes, and the presence of −OH was beneficial to increase the adsorption capacity of the adsorbent to pollutants. 17,18 XPS spectra were collected to further investigate the chemical structures of specimens, as displayed in Figure 2c− f. Strong peaks including C 1s, O 1s, and N 1s were observed at 284.8, 532.2, and 396.8 eV, respectively (Figure 2c), which showed that carbon, oxygen, and nitrogen were the primary elements on the surfaces of the membranes. As shown in Figure 2d, the wide photoelectron lines of PBSST with binding energies of 284.78, 286.15, and 289.…”

“…As known to all, the regeneration and durability of the adsorbent are urgent to extend its service life and promote the energy, resources, and environmental conservation. Biodegradable polyester has good mechanical properties, chemical stability, and biodegradation, which make it possible to be used as a sustainable substrate to prolong the service life of the adsorbent. − In our previous work, biodegradable poly­(butylene succinate- co -terephthalate) (PBST) nanofibrous membranes coated by β-CD polymer (CDP) were fabricated for removing the MB dye. , However, the prepared nanofibrous membranes showed relatively low adsorption capacity because the CDP was so soluble in water that it was prone to peel off from the surfaces of PBST nanofibrous membranes.…”

Membrane processes

“…Ecological null model analyses and phylogenetic molecular ecological networks (pMENs) in Xu, et al. (2019) study revealed that environmental filtering deterministically governed low‐flux bio‐cake communities. In summary, their findings clearly indicate distinct bio‐cake community assembly patterns under different operational conditions and highlight the importance of developing specialized strategies for fouling control in individual MBR systems.…”

Exploring Charged Polymeric Cyclodextrins for Biomedical Applications

“…Nanoparticles based on CyD, have allowed encapsulation of drugs to protect them and improve their bioavailability. These systems have higher stability constants than those of the corresponding CyD monomers; they show excellent properties in drug release kinetics, mechanical properties and stimuli-responsiveness [ 8 , 9 , 10 , 11 ]. Furthermore, these polymeric systems can be used in a clinical setting, such as controlled drug and gene delivery systems [ 12 ].…”