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US 2019/0167798 A1Published application
Membrane for sticking to living organism, and method for producing same
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsTOMOKO KAWASHIMA, HARUKA KUSUKAME, TAKAHIRO AOKI, YUKO TANIIKE
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Abstract
A cellulose membrane according to an embodiment of the present disclosure is a self-supporting cellulose membrane having a thickness of between 20 nm and 1300 nm, inclusive, composed of regenerated cellulose having a weight average molecular weight of 150,000 or more.
Claims26
A membrane for sticking to living organism, wherein
- the membrane for sticking to living organism is self-supporting;
- the membrane for sticking to living organism is formed of regenerated cellulose having a weight average molecular weight of 150,000 or more, and
- the membrane for sticking to living organism has a thickness of between 20 nm and 1300 nm, inclusive.
A method for producing a membrane for sticking to living organism, the method comprising:
- (A) preparing a cellulose solution containing a first solvent containing at least an ionic liquid;
- wherein
- the cellulose has a weight average molecular weight of 150,000 or more;
- (B) applying the cellulose solution to a surface of a substrate having a contact angle with water of 70° or less to form a liquid membrane on the surface;
- (C) immersing the liquid membrane in a liquid that is not capable of dissolving cellulose;
- and
- (D) removing the first solvent and a part other than the ionic liquid of the liquid from the liquid membrane, after the step (C).
4 more elements
Dependencies are inferred from the claim text.