The award in 2024 is presented to the authors of the following paper:

A Novel Approach to Fabricate Polymeric Nanofibrous Aerogels with Embedded Silica Aerogel Particles

REN Jianhua ^a, TABATA Isao ^b, HORI Teruo ^c, HIROGAKI Kazumasa <sup>a

a</sup> Graduate School of Engineering, University of Fukui, Japan
^b School of Engineering, University of Fukui, Japan
^c Headquarters for Innovative Society-Academia Cooperation, University of Fukui, Japan

Abstract: This study presents a novel approach to improve the structure of polymeric nanofibrous aerogels by incorporating silica aerogel particles. Para-aramid nanofibers/polyvinyl alcohol (ANFs/PVA) constitute the skeleton of nanofibrous aerogels, and silica aerogel particles derived from methyltrimethoxysilane (MTMS) serve as structural fulcrums embedded in the skeleton of the aerogels. In order to gain an in-depth understanding of the ANFs/PVA/MTMS composite aerogels, we carefully compared them with MTMS aerogels, ANFs aerogels, and ANFs/PVA aerogels. The preparation process and appearance of above four aerogels were clearly demonstrated. Their macroscopic morphology, chemical composition, and porosity were characterized by field emission scanning electron microscope (FE-SEM), attenuated total reflectance-Fourier transform infrared spectra (ATR-FTIR), and nitrogen physical adsorption, respectively. The results show that the silica aerogel particles are firmly embedded in the nanofibrous skeleton of aerogels, effectively resisting volume collapse during gelation and supercritical drying, preserving a finer appearance, and forming a stable ternary nanofibrous structure.

Journal of Textile Engineering, 2023, 69(1), 1-7

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The 3D curvature gaps (3D-gaps) between the 3D-dummy and 3D-body curved surface shapes of adult males and females (a total of 2,528 models) were automatically extracted using the four curvature angle values in each of the 10 areas regardless of size. The 3D-gap values were useful common information data for the 3D custom-made garment design and sewing in both models. In the case of tight-fitting garment design based on the 3D-dummy, the 3D-gap features of the four curvature values represented differences between the female- and male-dominated clusters in the chest, abdomen, and buttocks areas. In the female-dominated clusters, the 3D-gap in the chest areas tends to be high, while the 3D-gaps in the abdomen and buttocks areas tend to be high in the male-dominated clusters. The 3D-gap features in the slightly older female-dominated clusters show more complexity in many areas. The slightly younger male-dominated clusters extracted the 3D-gap features in each area. Although the number of both models was few, the 3D-gap in the back area was high in the older male and female common clusters. Using the 3D-gaps, we were able to numerically extract differences in the 3D-body curved surface shapes in the garment design.

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The aim of this study was to clarify the relationship between tactile sensation and physical properties of instrument panel material by applying the method of objective fabric hand evaluation. Physical properties of samples were measured, and subjective evaluation of tactile sensation was conducted by forty-four subjects. The subjects were divided into two clusters based on the subjective evaluation results, and the differences in the tactile evaluation criteria for each cluster were discussed. The results of the multiple regression analysis indicated that softness and elastic feel were related to compressional properties, while roughness was strongly related to surface roughness property. Surface roughness, softness, and elastic feel contributed significantly to the total tactile evaluation. Emboss patterns influenced surface roughness, and types of material polymer affected compressional properties. Furthermore, the two clusters differed in their evaluation of the appropriate roughness and softness, indicating differences in preferences.

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