Fibrous TEMPO-oxidized cellulose sodium salt (TOC-Na) and TEMPO-oxidized cellulose nanofiber sodium salt (TOCN-Na) were prepared. Counterions of TOC-Na and TOCN-Na were exchanged to copper,aluminum, and silver ions to form TOC-M and TOCN-M (M: metal). TOC-M sheets were prepared from TOC-M/water dispersions by filtration, and TOCN-M films were prepared from TOCN-M/water dispersions by casting and drying. The thermal diffusivities of the TOC-M sheets and TOCN-M films were measured in terms of metal counterions. All TOC-M sheets and TOCN-M films had higher thermal diffusivities in the planar direction than thickness direction. The TOCN-M films had higher thermal diffusivities than the TOC-M sheets or commercial transparent films. In TOCN-M films, the thermal diffusivities increased in the order, TOCN-Al < TOCN-Cu < TOCN-Ag.

Friction, a quality-related property, governs not only the efficiency of processing operations but also the quality and performance of the final product. In this work, the frictional characteristics of 100 % polyester,nylon, and polypropylene spunbond nonwoven fabrics bonded with three bonding patterns and the differences in fabric density were tested. A whisker-type tactile sensor machine that can measure the coefficient of friction regardless of the tracing direction was used. Stick-slip trace changes according to the fabric surface morphology were observed. Furthermore, it was found that the bonding method, component filament, and fabric density have a significant influence on the frictional characteristics of spunbond nonwoven fabrics.

Main-chain liquid-crystalline elastomers have received increasing attention because of their large reversible deformation, such as fivefold contraction and/or elongation. On the other hand, nanofibers prepared by electrospinning have attracted both industrial and scientific interest because of their high-performance mechanical properties due to the high molecular orientation obtained in the large-stretching fabrication process. In this study, a trial manufacture of nanofibers made from a main-chain liquid-crystalline elastomer composed of bibenzoate mesogens has been carried out. We succeeded in preparing the main-chain liquidcrystalline nanofibers cross-linked by in situ UV radiation during the electrospinning process and observed them by scanning electron microscopy.