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Hydrogel dressings can be designed to prevent bacterial infection, retain moisture, promote optimum adhesion to tissues, and satisfy the basic requirements of biocompatibility. [1] [2] Hydrogel dressings can also be designed to respond to changes in the microenvironment at the wound bed. [3]
A dressing or compress [1] is a piece of material such as a pad applied to a wound to promote healing and protect the wound from further harm. A dressing is designed to be in direct contact with the wound, as distinguished from a bandage, which is most often used to hold a dressing in place. Modern dressings are sterile.
The hysteresis of a hydrogel refers to the phenomenon where there is a delay in the deformation and recovery of a hydrogel when it is subjected to mechanical stress and relieved of that stress. This occurs because the polymer chains within a hydrogel rearrange, and the water molecules are displaced, and energy is stored as it deforms in ...
A hydrocolloid dressing is biodegradable, [2] breathable, and depending on the dressing selected, may adhere to the skin, so no separate taping is needed. [ 3 ] The active surface of the dressing is coated with a cross-linked adhesive mass containing a dispersion of gelatin, pectin and carboxymethyl cellulose together with other polymers and ...
The adhesive bandage protects the wound and scab from friction, bacteria, damage, and dirt. Thus, the healing process of the body is less disturbed. Some of the dressings have antiseptic properties. An additional function is to hold the two cut edges of the skin together to make the healing process faster. [1]
Recent technological advancements produced novel approaches such as self-adaptive wound dressings [40] that rely on properties of smart polymers sensitive to changes in humidity levels. The dressing delivers absorption or hydration as needed over each independent wound area and aids in the natural process of autolytic debridement.