邢唷> WYV欹] 餜bjbjz鎧8"1\1\    8R4 Q2   cPePePePePePeP$鳵甎H塒9,,,塒H翽,pcP,cPp 圿LOP豍0Q鯱鯱鯱2,,,,,,,塒塒,,,Q,,,,鯱,,,,,,,,,  : Effect of Molecular Weight of PCL on the Structure and Mechanical Properties of PCL/PET Composite Vascular Scaffold Prototype LI Chao-Jing(Ng厤gZ), Mohammed Abedalwafa, Wang Fu-Jun(媠蘙決)*, GE Peng([ O), CHEN Pei-feng(H桖W餦), WANG Lu(媠 恡) Key Laboratory of Textile Science and Technology, Ministry of Education, Donghua University, Shanghai 201620, China AbstractA new scaffold has been developed, which made from Poly-epsilon-caprolactone (PCL) membrane with porous structure, and reinforcement of PCL scaffold was achieved by embedding Polyethylene terephthalate (PET) weft-knitted tubular fabric. The aim of this paper is to study the variation tendency of the morphology and the mechanical properties of the sample with the changing of molecular weight. Weighing method was used to analyze the porosity of the sample, and SEM images were taken to observe porous structure. The tensile and compressive strengths of the samples were tested by the universal mechanical tester and radial compression apparatus, respectively. And the results showed that the porosity and compressive strength were improved when increasing the molecular weight, and the elastic recovery rate was also improved slightly. However, molecular weight has little impact on the tensile strength properties, because the PET tubular fabric provides most of the strength support rather than PCL membrane. 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