US 11,753,510 B2
Biodegradable composite material having improved mechanical properties using natural polymer nanofiber aqueous dispersion and method of producing the same
Sung Yeon Hwang, Daejeon (KR); Jeyoung Park, Daejeon (KR); Dong Yeop Oh, Daejeon (KR); Tae Ho Kim, Daejeon (KR); Si Gyeong Lee, Daejeon (KR); Myung Suk Shin, Daejeon (KR); and Jong Geon Jegal, Daejeon (KR)
Assigned to Korea Research Institute of Chemical Technology, Daejeon (KR)
Appl. No. 17/597,430
Filed by KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, Daejeon (KR)
PCT Filed May 28, 2020, PCT No. PCT/KR2020/006880
§ 371(c)(1), (2) Date Jan. 5, 2022,
PCT Pub. No. WO2021/006480, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 10-2019-0083851 (KR), filed on Jul. 11, 2019.
Prior Publication US 2022/0282048 A1, Sep. 8, 2022
Int. Cl. C08J 5/04 (2006.01); C08G 63/12 (2006.01); C08G 63/81 (2006.01); C08K 7/02 (2006.01)
CPC C08J 5/045 (2013.01) [C08G 63/12 (2013.01); C08G 63/81 (2013.01); C08K 7/02 (2013.01); C08G 2230/00 (2013.01); C08J 2367/02 (2013.01); C08K 2201/005 (2013.01); C08K 2201/011 (2013.01); C08K 2201/018 (2013.01)] 10 Claims
 
1. A biodegradable composite material produced by polymerizing a mixture including:
an aqueous dispersion of a natural polymer nanofiber including any one or more selected from the group consisting of a chitin nanofiber and a cellulose nanofiber;
a dicarboxylic acid or a derivative thereof; and
a diol,
wherein an amount of the natural polymer nanofiber in the aqueous dispersion of the natural polymer nanofiber is 0.05 to 0.5 wt % based on a total of 100 wt % of the biodegradable composite material.