In order to recycle the waste silk resource effectively, the biodegradable composite consisting of PBS matrix and silk/bamboo hybrid paper was prepared by hot compression molding. Beating treatment is adopted to modify silk fibroin and enhance the bamboo paper and the green composite, and the corresponding mechanical properties and morphologies were studied detailedly. The results showed that beating treatment could realize the fibrillation of fibroin and improve the hybrid paper′s tensile strength and elongation, and proper beating treatment to fibroin could also improve the mechanical properties of silk/bamboo hybrid paper reinforced PBS composite. The tensile, flexural and impact resistance properties of this green composite were improved remarkably compared with that of PBS control.

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In this paper, we present a highly accurate position detection system using a textile technique as a useful application of radio frequency identification (RFID) technology. To support this system, we also developed an automatic mapmaking system. Massively distributed RFID tags have the potential for location-aware applications. However, deploying RFID tags and correlating the physical coordinates of each tag identification for mapmaking is relatively expensive and time-consuming. We developed RFID textile and a customized textile inspection machine as an automatic mapmaking system. We examined the feasibility of a tracking system using the RFID textile that was calibrated by the developed mapmaking system. The calibration for a 19-m length of RFID textile, including 1900 RFID tags, was completed within 38 min, and RFID-based tracking system could successfully detect a walking trajectory.

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Nano/micron-size fibers are of growing interest not only in the textile industry but also in non-textile industries because of their superior functional properties. Since a commercial machine has not been designed to measure the mechanical properties of nano/micron-size fibers in any environment, we developed a versatile tensile tester suitable for monofilaments of nanometer to micrometer size. The design of the tester provides the following advantages: 1) convenient and precise mounting of fiber in a fiber holding unit 2) test methods conducted not only in ambient air but also in an ambient liquid environment, and 3) multiple tests including not only the simple tensile test but also the stress relaxation test. and three-point flexural test.
Using the developed tester, the mechanical properties of micron-size polyethylene, glass and carbon fibers as well as electrospun nylon-6 nanofiber are well evaluated with a proposed procedure. The characteristic feature of Young′s modulus, the breaking stress, the stress relaxation of the single micro- and nanofibers are studied in terms of the fiber diameter, the gauge length, and the environment (air or water).

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We investigated changes in the appearance and thickness of textile floor coverings caused by the Vettermann drum and practical use tests. Eight commercial tufted textile floor coverings were used as samples. All samples were subjected to the Vettermann drum test, and five samples were subjected to a practical use test carried out in accordance with ISO 11377. Visual assessments of changes in appearance were performed by seven experts. Thickness loss of samples was determined using a WRONZ non-destructive thickness gauge. In the case of the Vettermann drum test, the coefficient of agreement between the visually assessed grade and the thickness loss estimated using a logarithmic formula was r²=0.899. We concluded that the law of Weber-Fechner could be applied to the relationship between visual assessment and thickness loss. Finally, the correlation between the thickness loss and visually assessed grade obtained after a total traffic of 100,000 people in the practical use test and that after 5,000 revolutions in the Vettermann drum test was very high (mean of correlation coefficient: r_MEAN=0.950).

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