Conclusion We have demonstrated a convenient and reliable method to fabricate grooved PS nanofibers.
The average diameter of the grooved nanofibers was as small as 326 ± 50 nm, and we believe they are so far the finest nanofibers with a grooved texture. By systematical HSP inhibitor investigation GSK1904529A manufacturer of process parameters, we pointed out that solvent system, solution concentration, and relative humidity were the three key factors to the formation of grooved texture. When THF/DMF ratio was higher than 2:1, the formation mechanism should be attributed to the formation of voids on the jet surface at the early stage of electrospinning and subsequent elongation and solidification of the voids into a line surface structure. When THF/DMF ratio was 1:1, the formation mechanism should be ascribed to the formation of wrinkled surface on the jet surface at the early stage of electrospinning and subsequent elongation into a grooved texture. Acknowledgements This work was supported by the ‘Fundamental Research Funds for the Central Universities’ and project (2011BAE10B01) from National Science and Technology Ministry. References 1. Li D, Xia Y: Electrospinning of nanofibers: reinventing the wheel? Adv Mater 2004, 16:1151–1170.CrossRef 2. Huang ZM, Zhang YZ, Kotaki M, Ramakrishna S: A review on polymer nanofibers by electrospinning and their applications check details in nanocomposites.
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