Descriptive analysis is one of the methods used in the food industry to describe the perception of products when being eaten. This work attempts to adapt this method to the description of fabric handle. A panel of eleven assessors use fifteen discriminant and pertinent attributes, and the assessors are trained to evaluate each attribute and to score them on a linear scale. The performance of each panelist is checked for validity and reproducibility before the panel is acknowledged as operative. Through implementation of rigorous procedures (i.e., exploratory procedures, sample presentation, and data analyses), this methodology provides reliable descriptions of the perceived quality of fabrics. The hand of the same cotton fabric treated with different industrial finishes is described by the panel. Results are analyzed in term of differences and similarities between the fabrics, sustaining commercial claims but in a more precise way. Finally, the fabric ranking from crease recovery tests agrees with the ranking of the panel on the responsive scale.
Nano-web sheets of polyacrylonitrile (PAN) reinforced by carbon nanotubes (CNT) were prepared by electrospinning process. Multi wall nanotubes (MWNT) were dispersed mechanically by high shear mixing using a homogenizer device. It has been found that the spinning solution presented an electrical percolation threshold less than 0.5 wt.% of MWNT. Electrical volume and surface conductivity of the obtained nano-webs was studied by measuring the electrical volume resistance and surface resistance thanks to home-made plate electrodes. Scanning electron microscope (SEM) has been used to characterize the nano-web sheets produced. The average filament diameters range from 320 to 750 nm depending on the concentration of CNT and of PAN. From an electrical point of view, it has been observed that the electrical volume conductivity increases by about six orders of magnitude from 2 × 10 −12 S/m for pristine PAN to 4 × 10 −6 S/m for PAN charged by MWNT. Increasing the pressure on the specimen induces an exponential decrease of the volume resistivity while surface resistivity shows no significant changes, neither between pristine PAN and reinforced nano-webs, nor among reinforced nano-web in relation to MWNT concentration (in the limit of the study). This observed behavior is very interesting in the context of sensor developments.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.