	US 11,700,849 B2
	Method for preparation of attapulgite-based pH-responsive antibacterial material
Aiqin Wang, Gansu (CN); Aiping Hui, Gansu (CN); Fangfang Yang, Gansu (CN); Yuru Kang, Gansu (CN); Bin Mu, Gansu (CN); Qin Wang, Gansu (CN); and Yongfeng Zhu, Gansu (CN)
Assigned to Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Gansu (CN)
Appl. No. 17/781,667
Filed by Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Gansu (CN)
PCT Filed Feb. 9, 2021, PCT No. PCT/CN2021/076254 § 371(c)(1), (2) Date Jun. 1, 2022, PCT Pub. No. WO2021/203833, PCT Pub. Date Oct. 14, 2021.
Claims priority of application No. 202010280575.9 (CN), filed on Apr. 10, 2020.
Prior Publication US 2023/0000076 A1, Jan. 5, 2023
Int. Cl. A01N 25/12 (2006.01); A23K 20/28 (2016.01); A23K 20/163 (2016.01); A23K 40/10 (2016.01); A23K 40/30 (2016.01); A23K 20/105 (2016.01); A23K 20/111 (2016.01); A23K 20/121 (2016.01); A01P 1/00 (2006.01); A01N 35/02 (2006.01); A01N 43/08 (2006.01)

CPC A01N 25/12 (2013.01) [A01N 35/02 (2013.01); A01N 43/08 (2013.01); A01P 1/00 (2021.08); A23K 20/105 (2016.05); A23K 20/111 (2016.05); A23K 20/121 (2016.05); A23K 20/163 (2016.05); A23K 20/28 (2016.05); A23K 40/10 (2016.05); A23K 40/30 (2016.05)]

6 Claims

1. A method for prepay attapulgite-based pH-responsive antibacterial material, comprising:

directly spraying a natural aldehyde-based antibacterial agent onto an attapulgite powder wider stirring, and constantly stirring the attapulgite powder for 20-30 min;

grinding the attapulgite powder in a ball mill for 30-60 min to obtain a ground attapulgite powder;

placing the ground attapulgite powder in a stirred tank, and spraying a chitosan-citric acid aqueous solution onto the ground attapulgite powder;

after spraying, constantly stirring the ground attapulgite powder for 30-120 ruin; and

finally, drying the ground attapulgite powder to obtain a dried attapulgite powder, sieving the dried attapulgite powder to obtain a sieved attapulgite powder, and packaging the sieved attapulgite powder to obtain the antibacterial material.