Polyvinylidene fluoride (PVDF)/polyacrilonitrile (PAN)/multiwalled carbon nanotubes functionalized COOH (MWCNTs-COOH) nanocomposites with different contents of MWCNTs were fabricated by using electrospinning and solution cast methods. The interaction of the MWCNTs with the polymer blend was confirmed by a Fourier transform infrared (FTIR) spectroscopy study. The dispersion of the MWCNTs in the polymer blend was studied by scanning electron microscopy. The dispersion of the MWCNTs in the polymer matrix at different compositions has been examined by using scanning electron microscopy (SEM). Both individual and agglomerations of MWCNTs were evident. Multiwalled carbon nanotubes are capable of enhancing the impedance and electrical conductivity of PVDF-PAN/MWCNTs in a wide frequency range at different temperatures. Nanocomposites based on PVDF/PAN and MWCNTs as fillers show a significant enhancement in the electrical conductivity as a function of temperature. In addition, PVDF/PAN with 5.58 wt.% of MWCNTs has a much higher specific energy (129.7Wh/kg) compared to that of PVDF/PAN (15.57 Wh/kg).The results reveal that PVDF/PAN/MWCNTs composites have potential applications for nanogenerators, organic semiconductors, transducers, and electrical energy storage.

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The proper assessment of aesthetics and comfort is an important step before launching a new type of apparel. Most current works on this assessment are qualitative and hard to be applied in practical to improve apparel design. In this study, we proposed two quantitative mappings from pattern design parameters to degree of aesthetics and pattern design parameters to degree of comfort for assessing aesthetics and comfort of apparel, and particularly, women's pants have been investigated. Statistical analysis was employed in the mappings' development. An experiment was conducted as a validation for the mappings. Two major conclusions are drawn from this study. The first is that these mappings enable to extract a more advanced pattern for apparel design after the iterative pattern revision. The second is that these mappings are able to be digitalized and then the traditional method of observing feedbacks of aesthetics and comfort for an apparel product can be updated into a more efficient and low-cost one.