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PU Dressings Help Wounds
To Heal
A wound Dressing is required to have
following capabilities :
-
Control of water loss through
evaporation
-
Inhibition of body fluid loss
-
Promotion of drainage and prevention
of exudates build up
-
Protection from external
contamination
-
Sufficient bacterial effect to
inhibit infection and preparation of an optimum wound be for
autografting
Polyurethanes have wide applications
because of advantages in synthesizing with various polymer
materials having different mechanical and physical properties due
to polyol and diisocyanate used in synthesis.
Dressings based on polyurethane
foams with a specific combination of properties can be combined
with thermoplastic polyurethane (TPU) films which are water-vapour
permeable and allow the wound to breathe.
These wound dressings have high
mechanical strength, flexibility and biocompatibility. They absorb
aqueous fluids like wound secretions quickly before they can
escape, and do so without the foams expanding.
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