Title:
PVA-BASED COMPOSITE MATERIAL, PRECURSOR THEREOF, REMOLDED PRODUCT, COMPOSITE HYDROGEL, COMPOSITE THIN FILM, PREPARATION METHOD, AND APPLICATION
Document Type and Number:
WIPO Patent Application WO/2020/259723
Kind Code:
A1
Abstract:
Disclosed are a PVA-based composite material, a precursor thereof, a remolded product, a composite hydrogel, a composite thin film, a preparation method, and an application. The preparation method for the PVA-based composite material precursor comprises the following steps: precipitating an evenly mixed solution of a polyvinyl alcohol aqueous solution and a tannic acid aqueous solution, and separating and collecting the precipitate, the mass ratio of the tannic acid and the polyvinyl alcohol being 0.016:1 or more. The composite material, composite hydrogel and composite thin film have advantages such as increased strength and significantly increased toughness, also have aqueous processability, ultraviolet light absorption and freshness preservation performance, and are easily degradable and remoldable.
Inventors:
LIU XIAOKONG (CN)
NIU WENWEN (CN)
NIU WENWEN (CN)
Application Number:
PCT/CN2020/111998
Publication Date:
December 30, 2020
Filing Date:
August 28, 2020
Export Citation:
Assignee:
UNIV JILIN (CN)
International Classes:
C08G83/00; C08J3/075; C08J5/18; C08L87/00
Foreign References:
| CN110358099A | 2019-10-22 | |||
| US6624258B1 | 2003-09-23 | |||
| JP2002220522A | 2002-08-09 | |||
| CN109320886A | 2019-02-12 | |||
| CN108341973A | 2018-07-31 |
Other References:
WENWEN NIU: "Remalleable, Healable, and Highly Sustainable Supramolecular Polymeric Materials Combining Superhigh Strength and Ultrahigh Toughness", APPLIED MATERIALS & INTERFACES, vol. 12, no. 27, 11 June 2020 (2020-06-11), XP055770678, DOI: 20201026161812PX
CHEN, YA-NAN: "Poly(vinyl alcohol)–Tannic Acid Hydrogels with Excellent Mechanical Properties and Shape Memory Behaviors", APPLIED MATERIALS & INTERFACES, vol. 8, no. 40, 12 October 2016 (2016-10-12), XP055770660, DOI: 20201026162626A
WANG, ZHU ET AL.: "PVA/Tannic Acid Blends with High Thermal Stability", PLASTICS, no. 5, DOI: 10080313
CHEN, YA-NAN: "Poly(vinyl alcohol)–Tannic Acid Hydrogels with Excellent Mechanical Properties and Shape Memory Behaviors", APPLIED MATERIALS & INTERFACES, vol. 8, no. 40, 12 October 2016 (2016-10-12), XP055770660, DOI: 20201026162626A
WANG, ZHU ET AL.: "PVA/Tannic Acid Blends with High Thermal Stability", PLASTICS, no. 5, DOI: 10080313
Attorney, Agent or Firm:
SHANGHAI BESHINING LAW OFFICE (CN)
Download PDF: