An all-aqueous route to polymer brush-modified membranes with remarkable permeabilites and protein capture rates.

ABSTRACT: Microporous membranes are attractive for protein purification because convection rapidly brings proteins to binding sites. However, the low binding capacity of such membranes limits their applications. This work reports a rapid, aqueous procedure to create highly permeable, polymer brush-modified membranes that bind large amounts of protein. The synthetic method includes a 10-min adsorption of a macroinitiator in a hydroxylated nylon membrane and a subsequent 5-min aqueous atom transfer radical polymerization of 2-(methacryloyloxy)ethyl succinate from the immobilized initiator to form poly(acid) brushes. This procedure likely leads to more swollen, less dense brushes than polymerization from silane initiators, and thus requires less polymer to achieve the same binding capacity. The hydraul

SUBMITTER: Anuraj N 

PROVIDER: S-EPMC3265391 | biostudies-literature | 2012 Feb

REPOSITORIES: biostudies-literature