Acid catalyzed cross‐linking of polyvinyl alcohol for humidifier membranes

Synthesis and evaluation of nanohydrogel film containing polyvinyl alcohol/hyaluronic acid/zinc oxide for wound dressing

Background and Aim: Lesions of the skin can impair its vital function to protect humans against external pathogens. Therefore, producing a suitable wound dressing to repair injuries is always one of the challenges of researchers. The present study aims to Synthesize a hydrogel film for wound dressing applications. Methods: In this research, a hydrogel film of polyvinyl alcohol / hyaluronic a...

OPH oxidized polyvinyl alcohol hydrolase PCL polylcaprolactone PHA polyhydroxyalkanoate PHB polyhydroxybutyrate PLA polylactic acid PQQ pyrroloquinoline quinone PUR polyurethane PVA polyvinyl alcohol PVADH polyvinyl alcohol dehydrogenase

Widespread studies on the biodegradation of plastics have been carried out in order to overcome the environmental problems associated with synthetic plastic waste. Recent work has included studies of the distribution of synthetic polymerdegrading microorganisms in the environment, the isolation of new microorganisms for biodegradation, the discovery of new degradation enzymes, and the cloning o...

Zeolite catalyzed alkylation of toluene by alcohol

Vapor-phase methylation of toluene using methanol and its isopropylation with 2-propanol has been investigated ina down flow reactor under atmospheric conditions using N2 carrier over a series of surface modified andunmodified ZSM-5 (Si/Al= 60-170) loaded with H3PO4, differing in the external surface treatment of the zeolites.The feed molar ratios of toluene/methanol and toluene/2-propanol were...

SelvolTM Polyvinyl Alcohol for Textile Warp Sizing

Anisotropic polyvinyl alcohol hydrogel for cardiovascular applications.

Polyvinyl alcohol (PVA) is a hydrophilic polymer with various characteristics desired for biomedical applications and can be transformed into a solid hydrogel by physical crosslinking, using a low-temperature thermal cycling process. As with most polymeric materials, the mechanical properties of the resultant PVA are isotropic, as oppose to most soft tissues, which are anisotropic. The objectiv...