Vascular grafts are special tubes that serve as artificial replacements for damaged blood *** are already commercially available, mainly produced from Polyethylene Terephthalate(PET) knitted or woven fabrics or the ex...
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Vascular grafts are special tubes that serve as artificial replacements for damaged blood *** are already commercially available, mainly produced from Polyethylene Terephthalate(PET) knitted or woven fabrics or the expanded polytetrafluoroethylene(ePTFE).The purpose ofthe vascular graft prostheses or implantation is not only to keep a patient alive, but also for thepatient to continue with their normal lives, as a *** and ePTFE have been successfullyused in large diameter grafts;however, small caliber grafts still show an unacceptable highpercentage of failure, due to surface forces, blood plasma proteins are adsorbed by the graft,resulting in inflammation, infection, thrombus formation and ultimately vessel *** (ε-caprolactone) (PCL) is a promising biodegradable polymer with a longer degradation *** properties of the pure PCL cannot meet up with the requirement of vascular *** this thesis composite materials of PCL/PET consider as a novel biomedical materials which itmay use to prepare vascular graft with less defects, as composite materials form more than layer,to imitation the human blood vessel which composed of three *** of these layers tocontribute in the increases of mechanical properties (PET), while the others to improve thebiological properties (PCL), which leads to decrease the surface forces of PET and improve themechanical properties of the PCL.\n The aims of this study are to prepare a new prototype small diameter vascular graft from PCL reinforced with PETweft-knitted tube *** the influence of the materials parameters and textile structure on the *** the relationship between structure and elastic properties.\n Generally, PET weft knitting tube fabrics (6mm diameter) were fabricated with different loopdensity using small single jersey weft knitting *** has been used to dissolve PCL(three molecular weight were used) under stirring at room temperature until
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