Preparation of superabsorbent materials by plasma modification

The invention relates to a method of altering the characteristics of a material, by applying one of, but preferably both of the steps of cross-linking of either or both the exterior and internal surfaces of the substrate and/or plasma modification or plasma deposition of/onto the cross-linked materi...

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Bibliographische Detailangaben
Hauptverfasser:	BADYAL JAS P.S, SCHOFIELD WAYNE C.E
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMISTRY COMPOSITIONS BASED THEREON DISINFECTION, STERILISATION, OR DEODORISATION OF AIR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY 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 PERFORMING OPERATIONS PLASMA TECHNIQUE PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OFNEUTRONS PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMICBEAMS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPRAYING OR ATOMISING IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	The invention relates to a method of altering the characteristics of a material, by applying one of, but preferably both of the steps of cross-linking of either or both the exterior and internal surfaces of the substrate and/or plasma modification or plasma deposition of/onto the cross-linked material. When both steps are performed the substrate which can, for example, be an absorbent, hydrophobic polymer material has improved liquid retention and super absorbence characteristics.