The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2023
Filed:
Aug. 29, 2022
Shaanxi Environmental Protection Research Institute, Xi'an, CN;
Shaanxi Rongna Material Technology Co., Ltd., Xi'an, CN;
Feng Ji, Xi'an, CN;
Min Zhang, Baoji, CN;
Dong Li, Xi'an, CN;
Yifan Lei, Shangluo, CN;
Qingyi Wang, Xi'an, CN;
Jundong Wang, Bazhong, CN;
Hongbo Li, Xi'an, CN;
SHAANXI ENVIRONMENTAL PROTECTION RESEARCH INST., Xi'an, CN;
SHAANXI RONGNA MATERIAL TECHNOLOGY CO., LTD., Xi'an, CN;
Abstract
An electrospun nanofiber membrane and a method for preparing the electrospun nanofiber membrane are provided to solve problems of poor mechanical properties, short service life, poor uniformity and consistency of orientation of fibers and poor stability of fiber networks in current electrospun composite nanofiber materials. The electrospun nanofiber membrane is prepared by spinning solution through a high-voltage electrospinning device. The spinning solution is blending solution of regenerated silk fibroin:polyvinyl alcohol:polylactic acid with a mass ratio being 75-85:10-20:5 dissolved in a mixed solvent of trifluoroacetic acid and dichloromethane with a volume ratio being 7:3. The method establishes a reasonable mass ratio parameter of the regenerated silk fibroin, the polyvinyl alcohol and the polylactic acid to blending spinning to improve spinnability of silk fibroin, as well as prepare the electrospun composite nanofiber membrane with good mechanical properties.