Smart membranes with pH-responsive control of macromolecule permeability

Tufani, Ali and Özaydın İnce, Gözde (2017) Smart membranes with pH-responsive control of macromolecule permeability. Journal of Membrane Science, 537 . pp. 255-262. ISSN 0376-7388 (Print) 1873-3123 (Online)

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Utilization of membranes for separation of macromolecules has gained wide interest in the last decade, especially after the development of smart membranes with tunable properties for improved separation performance. In this work, we fabricated hybrid membranes with variable pore sizes that depend on the pH of the environment. Hybrid membranes were prepared by conformally coating the pore walls of anodic aluminum oxide (AAO) templates with the pH sensitive poly(methylacrylic acid-co-ethylene glycol dimethacrylate) (p(MAA-co-EGDMA)) polymer using initiated chemical vapor deposition (iCVD). Performance of the membranes was investigated under different pH conditions using nanoparticles, polyacrylic acid (PAA) and BSA protein as permeates. Reduced pore sizes at pH 9 due to swollen polymer decreased the permeability of permeates compared to that at pH 3. In addition to size, charge interactions between the polymer surface and permeates affected the permeation. At high pH values, permeation of BSA was reduced due to reduced pore size and the electrostatic interactions with the polymer.
Item Type: Article
Uncontrolled Keywords: AAO track-etch membrane; Bovine serum albumin permeation; Initiated chemical vapor deposition; pH responsive polymer
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng.
Sabancı University Nanotechnology Research and Application Center
Faculty of Engineering and Natural Sciences
Depositing User: Gözde Özaydın İnce
Date Deposited: 01 Jun 2017 11:35
Last Modified: 22 May 2019 13:50

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