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Vinyl alcohol co-polymer cryogels, vinyl alcohol co-polymers, and methods and products thereof
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanoteknologi och funktionella material)ORCID iD: 0000-0002-5496-9664
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanotechnology and Functional Materials)
2015 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

A cryogel-forming vinyl alcohol co-polymer is operable to form a cryogel, i.e., a hydrogel formed by crytropic gelation, in an aqueous solution at a concentration of less than about 10% by weight, in the absence of a chemical cross-linking agent and in the absence of an emulsifier. In one embodiment, a vinyl alcohol co-polymer cryogel comprises at least about 75% by weight water and a vinyl alcohol co-polymer, wherein the vinyl alcohol co-polymer is operable to form a cryogel in an aqueous solution at a concentration of less than about 10% by weight, in the absence of a chemical cross-linking agent and in the absence of an emulsifier. In another embodiment, a vinyl alcohol co-polymer cryogel comprises at least about 75% by weight water and a vinyl alcohol co-polymer comprising a saponified product of a vinyl acetate co-polymer formed from at least about 80% by weight of vinyl acetate monomer, and (i) at least about 3% by weight of acrylamide monomer or a mixture of acrylamide monomer and acrylic acid monomer, or (ii) at least about 5% by weight acrylic acid monomer. The vinyl acetate co-polymer, vinyl alcohol co-polymer and vinyl alcohol co-polymer cryogel may be formed according to particular methods, and the vinyl alcohol co-polymer cryogels may be used in various applications including biomedical implants and thin films and for delivery of therapeutic or cosmetic agents

Place, publisher, year, edition, pages
2015.
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
URN: urn:nbn:se:uu:diva-264390OAI: oai:DiVA.org:uu-264390DiVA: diva2:860094
Patent
US US8975309 B2 (2015-03-10)
Available from: 2015-10-10 Created: 2015-10-10 Last updated: 2016-11-30

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Strömme, MariaMihranyan, Albert

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