Wound dressing viscose

Dextrans are particularly useful and are employed as a plasma substitute. A concentration of about 6% dextran (50,000-100,000 relative molecular weight) has equivalent viscosity and colloid-osmotic properties to blood plasma. Dextran can also be used as non-irritant absorbent wound dressings, an application also suited to alginate gels. 

Silk/chitosan Nonwoven scaffold for wound dress- TE SEM, viscosity analysis, conductivity (Park et al. 2004)... 

Since 1976 the number of commercial odour adsorbent wound dressings has increased, but it was not until the late 1990s that they were available on prescription in the UK. There are a wide variety of odour adsorbent wound dressings available, but these can differ in construction, composition and, therefore, physical characteristics including odour adsorption. These dressings are composed of many different materials, ranging from the traditional naturally absorbent fibre types such as cotton and viscose, specialist materials such as polyurethane film, and fibres such as alginate and carboxymeth-ylcellulose fibres (CMC). 

First composite wound dressing -Gamgee tissue. Produced as cotton or viscose fiber in a retaining sleeve. First film dressing Isinglassplaster used after skin grafting. Composed of fish swim bladder sja-ead onto layer of oiled silk. 

The selection of solvents for dip coating is usually a complex process ultimately requiring multicomponent solvent mixtures which include a good solvent, a poor solvent, and a solvent of lower boiling point (sometime called blush resistor ) to balance viscosity and rate of evaporation. In wound dressings, the solvents selected affect the material microstructure which controls the evaporation of exuded body fluids but prevents bacteria... 

The wet integrity of the dressing which facilitates removal from the wound may be improved by incorporating fibers of greater strength such as viscose (rayon) staple fiber or fibers which interact with the alginate fibers when wet such as chitosan staple fibers. 

Kaltocarb (calcium alginate fibre bonded to a layer of activated charcoal cloth with an outer layer composed of spun bonded viscose, ConvaTec) is indicated for use as a primary dressing in the management of malodorous wounds including fungating carcinomas, leg ulcers, and pressure sores. 

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