Polyether Sulfone Copolymers and Articles Prepared Therefrom

A porous polymeric article comprising a first copolymer comprising a plurality of repeat units joined by —O— groups, wherein the plurality of repeat units comprises:

• a) repeat units of Formula (I)
• b) repeat units of Formula (II)
• wherein
• R1 comprises a plurality of repeat groups of formula —X—(CH2)y—;
• X is —O— or —NH—;
• and
• each y is an integer in a range of 1 to 4;
• and
• an asterisk (*) is an attachment site to the —O— group that joins two repeat units.

A method of separating biomaterials based on size differences, the method comprising:

• providing a porous polymeric article comprising a first copolymer comprising a plurality of repeat units joined by —O— groups, wherein the plurality of repeat units comprises:
• a) repeat units of Formula (I)
• b) repeat units of Formula (II)
• wherein
• R1 comprises a plurality of repeat groups of formula —X—(CH2)y—;
• X is —O— or —NH—;
• and
• each y is an integer in a range of 1 to 4;
• and
• an asterisk (*) is an attachment site to the —O— group that joins two repeat units;
• passing an aqueous mixture of biomaterials through the porous polymeric material, wherein the mixture of biomaterials comprises biomaterials having different average sizes;
• and
• separating the mixture of biomaterials based on their average sizes, wherein a first biomaterial that is smaller than a second biomaterial permeates through the porous polymeric article at a faster rate.