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http://hdl.handle.net/10397/1946
Title: | Fabric-supported chitosan modified temperature responsive PNIPAAm/PU hydrogel and the use thereof in preparation of facial mask | Authors: | Hu, J Liu, W Liu, B |
Issue Date: | 24-Aug-2010 | Source: | US Patent 7,780,979 B2. Washington, DC: US Patent and Trademark Office, 2010. | Abstract: | This invention involves fabric-supported chitosan modified temperature responsive PNIPAAm/PU hydrogel and the use thereof in preparation of facial mask. The merit of this invention is the hydrogel formed can reversibly swell and deswell near body temperature; the incorporation of PU can suppress the syneresis of PNIPAAm at an elevated temperature; Grafting of PNIPAAm and PU onto the surface of cellulose fabrics can enhance the mechanical strength of hydrogel; Coupling of chitosan to the surface of hydrogel can not only improve the handle and skin affinity, but also render the facial mask antibacterial; The hydrogel is capable of loading a variety of nutrients (or other functional components), which can release at body temperature; the hydrogel facial mask can be reusable with repeated rinsing. | Rights: | Assignee: The Hong Kong Polytechnic University. |
Appears in Collections: | Patent |
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us7780979b2.pdf | 327.12 kB | Adobe PDF | View/Open |
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