The selection of the raw materials is one of the most important factors for tissue scaffolds to function as native tissue. In this regard, the usage of biopolymers is crucial because these polymers are biocompatible, biodegradable, and non-toxic. Poly (l-lactic acid) (PLLA) has high biocompatibility that promotes cell attachment and proliferation, also it has suitable biodegradation time to allow cells to generate their own extracellular matrix (ECM) without creating any toxicity. On the other hand, polycaprolactone (PCL) has some mechanical advantages that can contribute to the function of the designed scaffolds when using as a blend. In this study, PLLA-based fibrous structures are produced by electrospinning method. Different concentrations of PLLA (10%, 14%, and 18%) are dissolved in chloroform solvent while PCL/PLLA blends (8% wt.) with different ratios (5/5, 6/4, 7/3, 8/2, and 9/1) are dissolved in 8/1/1 chloroform/ethanol/acetic acid solvent systems. The physical and morphological analyses are accomplished to determine the effect of concentration and blend ratio on the web structure.

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