公开(公告)号：US20220002508A1

公开(公告)日：2022-01-06

申请号：US17291289

申请日：2018-11-07

Applicant: Universiteit Twente

Inventor： Wiebe Matthijs de Vos ,  Joshua David Willot ,  Wouter Martinus Nielen

IPC: C08J5/18 ,  C08J9/14 ,  B01D67/00 ,  B01D69/12 ,  B01D71/76 ,  B01D69/08

Abstract: The invention relates to a method for creating a porous film through aqueous phase separation, the method comprising: i) providing an aqueous solution comprising a responsive copolymer, and optionally a charged polymer, wherein at least one of the monomers in the responsive copolymer is a responsive monomer; ii) forming the aqueous solution into a thin layer and contacting the thin layer of aqueous solution with an aqueous coagulation solution in which the responsive copolymer is not soluble, or contacting the thin layer of aqueous solution with an aqueous coagulation solution in which a complex comprising the responsive copolymer and the charged polymer is not soluble; and iii) allowing solvent exchange between the aqueous solution and the aqueous coagulation solution to produce a porous film. The invention further relates to porous films or membranes thus obtained.

公开(公告)号：US20180318775A1

公开(公告)日：2018-11-08

申请号：US15972273

申请日：2018-05-07

Applicant: Universiteit Twente

Inventor： Wiebe Matthijs de Vos

IPC: B01D71/68 ,  B01D71/32 ,  B01D71/26 ,  B01D71/40 ,  C08J5/22

CPC classification number: B01D71/68 ,  B01D71/26 ,  B01D71/32 ,  B01D71/40 ,  C08J5/2231 ,  C08J2327/12 ,  C08J2333/08 ,  C08J2381/06

Abstract: The invention is in the field of methods for preparing polymer films, and of such polymer films. The method involves phase separation and requires only aqueous solution, eliminating the need for organic solvents. The aqueous phase separation involves contacting a polymer solution comprising a trigger-responsive polymer with an aqueous coagulation solution in which the trigger-responsive polymer is not soluble.

公开(公告)号：US11465103B2

公开(公告)日：2022-10-11

申请号：US15972273

申请日：2018-05-07

Applicant: Universiteit Twente

Inventor： Wiebe Matthijs de Vos

IPC: B01D71/68 ,  B01D71/32 ,  B01D71/26 ,  C08J5/22 ,  B01D71/40 ,  B01D67/00 ,  B01D69/02 ,  B01D69/12 ,  B01D69/14

Abstract: The invention is in the field of methods for preparing polymer films, and of such polymer films. The method involves phase separation and requires only aqueous solution, eliminating the need for organic solvents. The aqueous phase separation involves contacting a polymer solution comprising a trigger-responsive polymer with an aqueous coagulation solution in which the trigger-responsive polymer is not soluble.