Abstract
Amphiphilic hyperbranched-star polymers (HPE- g-MPEG) with different arm length were synthesized by grafting methoxy poly(ethylene glycol)s (MPEGs, M ¯ n = 350 , 750 and 2000 , respectively) to the hyperbranched polyester (HPE) molecule using terephthaloyl chloride (TPC) as the coupling agent, and blended with PVDF to fabricate porous membranes via phase inversion process. Membrane morphologies were observed by scanning electron microscopy (SEM) and atomic force microscope (AFM), and chemical composition changes of the membrane surfaces were measured by X-ray photoelectron spectroscopy (XPS). Water contact angle, static protein adsorption, and filtration experiments were used to evaluate the hydrophilicity and anti-fouling properties of the membranes. It was found that, with the increase in MPEG arm length, the MPEG segments of HPE- g-MPEG enriched at the membrane surfaces substantially, resulting in a significant decrease in water contact angle. Furthermore, the blend membranes containing longer arm HPE- g-MPEGs showed lower static protein adsorption, higher protein solution fluxes, and better protein solution flux recovery than the pure PVDF membrane.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
