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David Valade, Lawrence K. Wong, Yujung Jeon, Zhongfan Jia and Michael J. Monteiro Polyacrylamide hydrogel membranes with controlled pore sizes Journal of Polymer Science Part A: Polymer Chemistry 51

Article first published online: 17 AUG 2012 | DOI: 10.1002/pola.26311

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Polymer-supported polyacrylamide hydrogel membranes were prepared using different initial concentrations of monomer and crosslinker, resulting in permeabilities (km) ranging from 0.199 to 6.343 × 1018 m2. Polymer-coated gold nanoparticles (AuNPs) were filtered through these membranes, showing that the greater the km value, the larger AuNPs passed into the permeate. Equal concentrations of all the different AuNPs were filtered from the smallest to the largest pore-sized membranes, resulting in good size selectivity and a high percentage of AuNPs trapped within the membranes.

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