US 11,718,720 B2
Composite cellulose nanosheet with excellent transparency and strength and manufacturing method thereof
Chae Hwan Hong, Seoul (KR); Jin Woo Choung, Gyeonggi-do (KR); Jungmok You, Gyeonggi-do (KR); Kangyun Lee, Gyeonggi-do (KR); Youngho Jun, Seoul (KR); Dabum Kim, Gyeonggi-do (KR); and Goo Min Kwon, Gyeonggi-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Motors Corporation, Seoul (KR); and University-Industry Cooperation Group of Kyung Hee University, Gyeonggi-do (KR)
Filed by Hyundai Motor Company, Seoul (KR); Kia Motors Corporation, Seoul (KR); and University-Industry Cooperation Group of Kyung Hee University, Gyeonggi-do (KR)
Filed on Oct. 6, 2020, as Appl. No. 17/64,169.
Claims priority of application No. 10-2020-0057226 (KR), filed on May 13, 2020.
Prior Publication US 2021/0355289 A1, Nov. 18, 2021
Int. Cl. C08J 5/18 (2006.01); C08L 1/02 (2006.01); C08J 5/00 (2006.01); C08J 3/07 (2006.01); C08K 5/00 (2006.01); C08K 5/1515 (2006.01); C08K 3/011 (2018.01); C08K 3/20 (2006.01); C08K 7/02 (2006.01); C08B 15/10 (2006.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01)
CPC C08J 5/18 (2013.01) [C08B 15/10 (2013.01); C08J 3/07 (2013.01); C08J 5/005 (2013.01); C08K 3/011 (2018.01); C08K 3/20 (2013.01); C08K 5/0025 (2013.01); C08K 5/1515 (2013.01); C08K 7/02 (2013.01); C08L 1/02 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C08J 2301/02 (2013.01); C08K 2201/005 (2013.01); C08K 2201/011 (2013.01); C08L 2201/54 (2013.01); C08L 2203/16 (2013.01); C08L 2205/16 (2013.01); C08L 2312/00 (2013.01)] 13 Claims
 
1. A manufacturing method of a composite cellulose nanosheet with excellent transparency and strength, comprising:
preparing a dispersion by mixing a cellulose nanofiber and a cellulose nanocrystal;
preparing a wet nanosheet support by filtering the dispersion;
crosslinking the cellulose nanofiber and the cellulose nanocrystal by immersing the wet nanosheet support in a crosslinking agent solution; and
placing the wet nanosheet support between two sheets of glass plate and then pressing and drying.