For the preparation of supports of membrane type, natural
and synthetic polymers such as cellulose, chitosan, polyamide,
poly (vinyl alcohol), poly (hydroxyethyl methacrylate), polysulfon,
polyethylene polyamide hollowfiber have been investigated [5–11].
Nylonmembranes offer narrowpore size and alsomechanical rigidity.
However, nylon membrane has a low concentration of primary
amino groups leading to low ligand density. Another disadvantage
of this matrix is nonspecific adsorption of protein [6].