US 12,312,707 B2
Preparation method for graphene oxide fiber, and fiber obtained thereby
Kunyan Sui, Shandong (CN); Yanzhi Xia, Shandong (CN); Na Pan, Shandong (CN); Min Lin, Shandong (CN); Wenxin Fan, Shandong (CN); Huilin Cui, Shandong (CN); and Yuyu Li, Shandong (CN)
Assigned to QINGDAO UNIVERSITY, Shandong (CN)
Appl. No. 17/607,762
Filed by QINGDAO UNIVERSITY, Shandong (CN)
PCT Filed Apr. 30, 2020, PCT No. PCT/CN2020/088500
§ 371(c)(1), (2) Date Oct. 29, 2021,
PCT Pub. No. WO2020/221361, PCT Pub. Date Nov. 5, 2020.
Claims priority of application No. 201910362369.X (CN), filed on Apr. 30, 2019.
Prior Publication US 2022/0205139 A1, Jun. 30, 2022
Int. Cl. D01D 5/06 (2006.01); D01D 1/02 (2006.01)
CPC D01D 5/06 (2013.01) [D01D 1/02 (2013.01); D10B 2101/12 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A preparation method for graphene oxide fiber, wherein the method comprises the following steps:
step 1: adding polyelectrolyte into water to obtain spinning stock solution wherein the polyelectrolyte is chitosan oligosaccharide, the molecular weight of the polyelectrolyte is 2000-10000 Da;
step 2: adding graphene oxide into water, optionally stirring and/or ultrasonic processing, to obtain coagulation bath;
step 3: injecting the spinning stock solution obtained in step 1 into the coagulation bath obtained in step 2, and winding, washing and drying to obtain the graphene oxide fiber.