Polyvinyl alcohol hydrogel having asymmetric pore size

The present invention relates to a polyvinyl alcohol hydrogel having an asymmetric pore size. the pore size of the upper surface of the polyvinyl alcohol hydrogel is 1-30 μm, the pore size of lower surface thereof is 50-300 μm, and the pore size of the hydrogel gradually increases from the upper sur...

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Bibliographische Detailangaben
Hauptverfasser:	Fan, Daidi, Yang, Chanyuan, Zhu, Chenhui, Yan, Jianya, Li, Yang, Ma, Xiaoxuan, Jia, Liping
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR GENERAL PROCESSES OF COMPOUNDING HUMAN NECESSITIES HYGIENE MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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