The preparation of nanofiber from the conducting polymer polypyrrole alone by electrospinning methods could not be effected, but the fabrication of nanofiber can be done successfully by blending meta-Aramid (m-Aramid) with polypyrrole. The fiber diameter of the fabricated nanofiber was approximately 300nm. The structure of the nanofiber could be controlled by varying the revolution of the target drum during electrospinning. The cast film of the polypyrrole and meta-Aramid blend polymer was in a uniform single-phase state, but dual-phase nanofiber, on which polypyrrole significantly condensed in the vicinity of the nanofiber surface, was successfully fabricated through the spinning of nanofiber by electrospinning. The revolution speed of the target drum was increased, the higher the conductivity possessed by the nanofiber. The conducting nanofiber obtained in this research provides hope for its use and exploitation in electromagnetic shielding for which flexibility is required and antistatic material.

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In this study, a new experimental device of rotary bending test for filaments was proposed, and the mechanical behaviors of the contact, movement, and release of filaments under rotary bending were investigated. According to the experimental results, the maximum load of a bundle of filaments could be estimated by considering the geometry interaction of filaments. The cumulative energy based on load and rotation angle was calculated, and the correlation between the energy and the number of filaments in the case of various filament diameters and pushing length was estimated. Furthermore, the energy was divided into two energies (E_I, E_II). The energy E_I is dominated by the effect of impact and decomposition, and the energy E_II is influenced by the sweeping phenomena. It is obvious that E_I and E_II have trade-off relationship due to effects of pushing length. From the results, we believe that the proposed method is useful for design of the products composed of filaments because effects of design parameters of filaments on mechanical characterization can be estimated conveniently.

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