polyester
polyester
In the late 1950 there was intensive development of synthetic arterial substitute .(80) Some materials such as nylon clearly deteriorated with time with a risk of aneurysm formation and rupture . Dacron ( polyester) appears to be more stable and resistant to long term degradation .(81)Although depending upon the particular weave or knit and fiber density , there is a continuing small risk of aneurysm formation.(82) Edward was the first to emphasize the importance of porosity in the construction of these synthetic prosthesis. (83) Polyester is made by reacting dicarboxylic acid with dihydric alcohol, polyester fibers are produced in many types filament or staple yarns. Polyester has excellent resistance to wrinking and creasing , besides that abrasion resistance and strength of polyester are excellent . (57) Polyesters characteristics include high strength , resistance to shrinkage and stretching , quick drying , chemical resistance , melting point 450º F and heat sealability. (56) The wide variety of polyester textiles good performance properties and favorable economics have combined to make polyester the fibers most used for industrial applications . Polyester fibers dominate the field of medical fabrics, due to certain characteristics, it is used in disposable diapers and sanitary napkins . (85) An interesting and important use of polyester is for surgical implants, the pure fiber used for this purpose does not causes physiological reactions and thus it is used in vascular tubes to replace damaged human implants .(86) It is also used in support of cardiac biological valves , artificial heart, mesh type fabrics to reinforce damaged body tissue , patch grafts and dialysis filters .(56) It is also used in the repair of the abdominal wall after injury lesion caused by hernia, invasive infection or trauma
