Three-dimensional spatial distribution analysis of fibre in wet-blue pig leather / Jing Li in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 3 (05-06/2018)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 3 (05-06/2018) Titre : Three-dimensional spatial distribution analysis of fibre in wet-blue pig leather Type de document : texte imprimé Auteurs : Jing Li, Auteur ; Honglei Teng, Auteur ; Suqing Liu, Auteur ; Jing Xu, Auteur ; Tianduo Li, Auteur Année de publication : 2018 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Analyse Cuirs et peaux de porcs Wet-blue (tannage) Peau tannée au chrome (le chrome donne une couleur bleue) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In the paper, the ratio of spatial distribution of fibre in wet-blue leather obtained from the spinal region of adult pigskin is researched in both horizontal and vertical directions. Furthermore, the regularity of spatial distribution of fibre is further analysed by the Hurst exponent H. Such spatial structure analyses are essential to obtain true 3D data, including the shape, size and orientation of fibres. We demonstrate that the data sets can be obtained by serial paraffin sections using a series of improved techniques, such as serial-sectioning, SEM imaging and locating techniques. In the study, stacks of several hundred sections 4µm thick have been obtained to evaluate their spatial relationships. We find that the ratio of spatial distribution of fibre is always fluctuation in a narrow range in both horizontal and vertical directions in wet-blue leather. The information studied in the paper will be of central importance in leather structure research for providing a scientific path to analyse intrinsic leather strength and the process of chemical treatment. Note de contenu : - EXPERIMENTAL PROCEDURES : A Sample preparation and serial sections - B. Imaging and locating - RESULTS AND DISCUSSION : A. Serial-sectioning - B. Imaging - C. Location - D. Quantitative measurements - Fig. 1 : The high-contrast images obtained using a low-vacuum SEM at a magnificationof (A) 50X, (B) 500X, (C) 1000X and (D). Spot size : 6.3 ; contrast : 90 ; brightness : 10 - Fig. 2 : The light microscopy images obtained from six consecutive slices paraffin-embedded with little deformation by serial-sectioning technique - Fig. 3 : The curves showed the locating precision throughout a stack of images from the fibre network - Fig. 4 : The SEM images showing mean area occupied by fibres (black) and by interspaces (white) - Fig. 5 : he curve shows the ratio of spatial distribution of fibre in vertical direction in wet-blue leather. The magnification of images is 40X - Fig. 6 : The curve shows the ratio of spatial distribution of fibre in vertical direction in wet-blue leather. The magnification of images is 100X - Fig. 7 : The curve shows the ratio of spatial distribution of fibre in horizontal direction in wet-blue leather. The magnification of images ranged from 50X to 6000X En ligne : https://drive.google.com/file/d/1KexZvlIdAv2aSjxJOXNxHdZR_SncUZPF/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30790 [article]

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