公开(公告)号：US09783837B2

公开(公告)日：2017-10-10

申请号：US14735456

申请日：2015-06-10

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hae Shin Lee ,  Seon Ki Hong ,  Joseph Paul Park

IPC: C12P13/00 ,  C08J5/18 ,  C08K3/08 ,  C08L79/02 ,  C12P13/02 ,  C12P19/26

CPC classification number: C12P13/001 ,  C08J5/18 ,  C08J2379/02 ,  C08K3/08 ,  C08K2003/0806 ,  C08K2201/013 ,  C08L79/02 ,  C12P13/02 ,  C12P19/26

Abstract: The present invention relates to a method for preparing a double-sided film containing the step of 5 forming a film in the interface between air and the mixture of a polymer comprising amine group (—NH) and a compound containing phenol or catechol by exposing the mixture on the air. Particularly, the double-sided film of the present invention is a separation membrane 10 that can separate the interface of liquid phase and gas phase and at the same time can be used as a biomaterial such as a haemostatic and also an waterproof agent. When the film is prepared in a moderate condition by using an enzyme, the film can include proteins and 15 cells, resulting in the multi-functional versatility film that can be useful as a biocatalyst. The versatility film of the present invention, thus, is not expensive and the production method thereof is simple and eco-friendly.