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Coloration of cellulose nanofibres with pigments / Shamshad Ali in COLORATION TECHNOLOGY, Vol. 136, N° 5 (10/2020)
[article]
Titre : Coloration of cellulose nanofibres with pigments Type de document : texte imprimé Auteurs : Shamshad Ali, Auteur ; Awais Khatri, Auteur ; Urooj Baig, Auteur ; Alishba Javeed, Auteur ; Nadir Ali Rind, Auteur Année de publication : 2020 Article en page(s) : p. 427-434 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Colorimétrie
Eaux usées -- Analyse
Electrofilature
Essais (technologie)
Fibres cellulosiques
Fibres textiles -- Propriétés mécaniques
Morphologie (matériaux)
Nanofibres
Pigments
Résistance au lavage
Solidité de la couleur
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Electrospun nanofibrous mats are popular for their wide technological applications as medical, filtration, sensing and high performance textiles. The potential for coloration of electrospun nanofibrous mats for aesthetic purposes has also been explored recently, and the pigment coloration of cellulose electrospun nanofibrous mats is reported for the first time in this paper. Cellulose acetate electrospun nanofibrous mats were fabricated using electrospinning followed by treatment with sodium hydroxide to synthesise regenerated cellulose electrospun nanofibrous mats. Then the cellulose mats were coloured with commercially available pigments by a pad‐dry‐bake method. Excellent K/S and colour fastness to both washing and light were produced with the application of three commercial pigments. The pH and total dissolved solids content of the coloration wastewater, as well as the mechanical properties of the electrospun nanofibrous mats, were also tested. Attenuated total reflection‐Fourier Transform infrared spectroscopy and scanning electron microscopy analysis were used for characterisation. Note de contenu : - EXPERIMENTAL : Materials - Preparation of CEL ENMs - Pigment coloration of CEL ENMs - Colour measurement and testing - Wastewater testing - Characterisation - Mechanical properties of ENMs
- RESULTS AND DISCUSSION : Chemical structures of CA and CEL ENMs - Effect of bakint temperature on K/S - Effect of baking time on K/S - Effect of pigment quantity on K/S - Effect of pigment quantity on the colorimetric values of coloured CEL ENMs - Analysis of wastewater testing - Colour fastness properties - Surface morphology of ENMs - Mechanical properties of ENMsDOI : https://doi.org/10.1111/cote.12485 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12485 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34486
in COLORATION TECHNOLOGY > Vol. 136, N° 5 (10/2020) . - p. 427-434[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22268 - Périodique Bibliothèque principale Documentaires Disponible A comparative morphology of kangaroo and bovine leathers / J. H. Bavinton in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXII (Année 1987)
[article]
Titre : A comparative morphology of kangaroo and bovine leathers Type de document : texte imprimé Auteurs : J. H. Bavinton, Auteur ; D. E. Peters, Auteur ; L. J. Stephens, Auteur Année de publication : 1987 Article en page(s) : p. 197-199 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Analyse
Cuirs et peaux de bovins
Cuirs et peaux de kangourous
Morphologie (matériaux)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Collagen fibre bundles, which are the structural components of skin and leather, are organized in a variety of ways. Each species of animal has a characteristic arrangement, although in many cases they are similar. In animals which are commonly used for leather production, such as cattle and sheep, the arrangement of the fibre bundles has been well studied, and the existence of a relationship between the fibre bundle orientation and the physical properties of the leather is recognized. Diseases of the collagen may also have a profound effect on skin strenth. The strength of leather depends therefore on the arrangement of the collagen fibre bundles and, presumably also on the strength of the collagen itself.
Although kangaroo leather has not been studied to the same extent as the more commonly used leathers, recent studies on its physical properties and stratigraphic strength analysis have shown that there are differences between kangaroo and other leathers. To ensure that full use may be made of its capabilities, a better understanding of its structure is needed. This paper reports a histological study of kangaroo leather and compares it with bovine leather.En ligne : https://drive.google.com/file/d/1DG1ODE2PPey865TN7K87_gDWewPiwa55/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8994
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXII (Année 1987) . - p. 197-199[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 008087 - Périodique Bibliothèque principale Documentaires Disponible A comparative study of ultrasonic degumming of silk sericin using citric acid, sodium carbonate and papain / Wuchao Wang in COLORATION TECHNOLOGY, Vol. 135, N° 3 (06/2019)
[article]
Titre : A comparative study of ultrasonic degumming of silk sericin using citric acid, sodium carbonate and papain Type de document : texte imprimé Auteurs : Wuchao Wang, Auteur ; Yi Pan, Auteur ; Kang Gong, Auteur ; Qi Zhou, Auteur ; Tonghua Zhang, Auteur ; Qing Li, Auteur Année de publication : 2019 Article en page(s) : p. 195-201 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dégommage
Essais dynamiques
Fibres textiles -- Analyse
Fibres textiles -- Propriétés mécaniques
Morphologie (matériaux)
Nettoyage par ultrasons
Résistance à la traction
Séricine
Soie et constituants
Surfaces -- AnalyseIndex. décimale : 667.3 Teinture et impression des tissus Résumé : The utilisation of ultrasonics has been shown to enable efficient and environmentally friendly textile wet processing. This study conducted a comparative investigation of silk degumming by using a conventional heating bath and ultrasonic irradiation at a range of ultrasonic frequencies. Citric acid, sodium carbonate and papain were used as degumming agents. Sericin degumming rate, fibre whiteness, fibre surface morphology, fibre structure characteristics and fibre tensile properties were measured and analysed. Results showed that ultrasonics at a lower frequency produced a greater degumming rate than at a higher frequency. Ultrasonics is a more effective way than the conventional heating bath of improving degumming efficiency, especially at a lowered temperature of 60 °C. When sodium carbonate was applied at 90 °C, a conventional heating bath was found to be more effective than ultrasonics. Papain was found to be more effective in sericin removal than citric acid and sodium carbonate, with a degumming rate of 22% achieved at 60 °C under ultrasonic irradiation at 40 kHz. The use of papain can, however, cause a possible overreaction to silk under certain severe conditions, resulting in a loss of fibre whiteness. Negligible changes in fibre structure characteristics were measured by Fourier Transform–infrared spectroscopy and X‐ray diffraction after ultrasonic degumming with papain. Slightly reduced fibre strength and increased fibre extensibility were observed in ultrasonically degummed silk samples compared with un‐degummed and conventionally degummed silk samples. Note de contenu : - EXPERIMENTAL : Materials - Equipment - Sample preparation - Degumming - Determination of fibre weight loss - Determination of fibre whiteness - Fibre surface analysis - Infrared spectra - X-ray diffraction - Tensil testing
- RESULTS AND DISCUSSION : Degumming rate - Fibre whiteness - Fibre surface morphology - Fibre structure characteristics and tensile strengthDOI : 10.1111/cote.12392 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12392 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32617
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Code-barres Cote Support Localisation Section Disponibilité 20951 - Périodique Bibliothèque principale Documentaires Disponible Comparison of physical and chemical properties between polysulfonamide and aramid / Wen-Liang Xue in CHEMICAL FIBERS INTERNATIONAL, Vol. 63, N° 2 (05/2013)
[article]
Titre : Comparison of physical and chemical properties between polysulfonamide and aramid Type de document : texte imprimé Auteurs : Wen-Liang Xue, Auteur ; Meng-Yuan Wei, Auteur ; Lu Wei-Min, Auteur Année de publication : 2013 Article en page(s) : p. 91-93 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse spectrale
Analyse thermique
BiréfringenceLa biréfringence est la propriété physique d'un matériau dans lequel la lumière se propage de façon anisotrope. Dans un milieu biréfringent, l'indice de réfraction n'est pas unique, il dépend de la direction de polarisation de l'onde lumineuse. (Wikipedia)
Diffractométrie de rayons X
Etudes comparatives
Fibre aramide
Fibres textiles -- Propriétés chimiques
Fibres textiles -- Propriétés physiques
Fibres textiles -- Propriétés thermiques
Fibres textiles synthétiques
Morphologie (matériaux)
PolysulfonamidesIndex. décimale : 677 Textiles Résumé : Polysulfonamide and aramid have a wide range of applications in heat-resistant materials areas, but now the lack of effective distinguishing methods has seriously influenced the normal textiles trade. Textile fiber identification is based on a variety of fiber physical, chemical and other properties, and through comparing with the standard picture, standard spectra and standard data it could be used to identify the type of unknown fiber. This paper describes the physical and chemical properties of polysulfonamide and aramid, such as surface morphology, aggregation structure, thermal properties and so on, and it is found that infrared spectroscopy, thermal analysis, X-ray diffraction, and birefringence are effective distinguishing methods for these high-performance fibers. Note de contenu : - SURFACE MORPHOLOGY
- AGGREGATION STRUCTURE
- THERMAL PROPERTIES
- OTHER PROPERTIES : Wide-angle X-ray diffraction test - Birefringence determinationEn ligne : https://drive.google.com/file/d/1DM_Z7NbQArys9KlfLZkxUN4PmrSfmDr1/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18641
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Code-barres Cote Support Localisation Section Disponibilité 15112 - Périodique Bibliothèque principale Documentaires Disponible Core-shell and other multiphase latex particles their morphologies and relating those to synthesis variables in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 2 (06/2008)
[article]
Titre : Core-shell and other multiphase latex particles their morphologies and relating those to synthesis variables Type de document : texte imprimé Année de publication : 2008 Article en page(s) : p. 169-180 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Composés organiques -- Synthèse
Copolymère styrène acrylique
Core-Shell
Latex
Morphologie (matériaux)Index. décimale : 667.9 Revêtements et enduits Résumé : Composite latex particles made from sequential processing steps may have a wide range of morphologies. The particular structure achieved is the result of a number of complex interactions between the chemical and physical aspects of the emulsion polymerization process. The intention is often to produce a core-shell particle structure, but in reality this is often a nontrivial task. In addition, it is challenging to develop confident conclusions about the detailed morphology of such particles, even when the two-component polymers are well phase-separated. This paper reports on an inter-laboratory study of acrylic-styrene copolymer latices in which the two-component polymers were not well phase-separated-a common result when attempting to make core-shell latex particles. Six different organizations each performed a number of analytical measurements to characterize two different latex systems. Their collective results were presented at a workshop in which the group strived to reach consensus on the detailed structures of the particles. Their conclusions were that multiple, complementary analytical results are required to reach a sound decision. While electron microscope results were always judged to be necessary, considered by themselves, it is often found that one can be led to false conclusions, especially for systems that are not well phase-separated. Given the results of this study it is clearly inappropriate to assume that the polymer formed in the second stage of a semibatch latex polymerization process forms a shell, giving rise to a core-shell morphology. DOI : 10.1007/s11998-007-9060-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-007-9060-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2994
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Code-barres Cote Support Localisation Section Disponibilité 010394 - Périodique Bibliothèque principale Documentaires Disponible Corrosion behavior of AISI 316 stainless steel coated with modified fluoropolymer in marine condition / E. Husain in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 5 (09/2018)
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PermalinkCorrosion tests of nickel coatings prepared from a Watts-type bath / D. E. Rusu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 1 (01/2012)
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PermalinkCyclic extrusion of recycled high density polyethylene/banana fiber/fly ash cenosphere biocomposites : thermal and mechanical retention properties / Sukanya Satapathy in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIV, N° 1 (03/2019)
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PermalinkDirect observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM / Cheng-Le Zhao in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 2 (04/2006)
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