Abstract

An electrospinning method was used to spin semi-crystalline poly(L-lactide) (PLLA)nanofibres. Processing parameter effects on the internal molecular structure of electrospunPLLA fibres were investigated by x-ray diffraction (XRD) and differential scanningcalorimetry (DSC). Take-up velocity was found as a dominant parameter to induce a highlyordered molecular structure in the electrospun PLLA fibres compared to solutionconductivity and polymer concentration, although these two parameters playedan important role in controlling the fibre diameter. A collecting method of asingle nanofibre by an electrospinning process was developed for the tensile teststo investigate structure–property relationships of the polymer nanofibres. Thetensile test results indicated that higher take-up velocity caused higher tensilemodulus and strength due to the ordered structure developed through the process.

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