公开(公告)号：US11365297B2

公开(公告)日：2022-06-21

申请号：US16239109

申请日：2019-01-03

Applicant: TUSKEGEE UNIVERSITY

Inventor： Vijaya K Rangari ,  Samia Islam ,  Woubit Salah Abebe

IPC: C08J5/00 ,  C08J5/18 ,  C08L1/04 ,  C08B15/00 ,  C08B3/12 ,  C08B37/08 ,  C08L1/10 ,  C08L5/08

Abstract: A biopolymer film is provided that comprises a combination of: crystalline nano cellulose (CNC)/esterified crystalline nano cellulose (ECNC) reinforced with chitosan. The two polymer components can be present in any ratio but an approximate CNC to ECNC 70:30 ratio is preferred. The chitosan component is derived from exoskeletons of crustaceans. Also provided are methods of preparing biopolymer film and preparing food packaging components from said biopolymer film. The CNC/ECNC mixture is dissolved in an ethanol solution and the chitin is dissolved in acetic acid and mixed together to form a polymer blend.

公开(公告)号：US11661486B1

公开(公告)日：2023-05-30

申请号：US17845143

申请日：2022-06-21

Applicant: TUSKEGEE UNIVERSITY

Inventor： Vijaya K. Rangari ,  Samia Islam ,  Woubit Abebe

IPC: C08J5/00 ,  C08J5/18 ,  C08L1/04 ,  C08B15/00 ,  C08B3/12 ,  C08B37/08 ,  C08L1/10 ,  C08L5/08

CPC classification number: C08J5/18 ,  C08B3/12 ,  C08B15/005 ,  C08B37/003 ,  C08L1/04 ,  C08L1/10 ,  C08L5/08 ,  C08J2301/02 ,  C08J2401/10 ,  C08J2405/08 ,  C08L2201/06 ,  C08L2203/16 ,  C08L2205/02 ,  C08L2205/03

Abstract: A biopolymer film is provided that comprises a combination of crystalline nano cellulose (CNC)/esterified crystalline nano cellulose (ECNC) reinforced with chitosan. The two polymer components can be present in any ratio, but an approximate CNC to ECNC 70:30 ratio is preferred. The chitosan component is derived from exoskeletons of crustaceans. Also provided are methods of preparing biopolymer film and preparing food packaging components from said biopolymer film. The CNC/ECNC mixture is dissolved in an ethanol solution and the chitin is dissolved in acetic acid and mixed together to form a polymer blend.