Evaluation of the physical properties of goatskins tanned using banana (Musa spp.) leaf midrib tannins / James K. Wangui in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 1 (01/2024)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIX, N° 1 (01/2024) . - p. 13-19 Titre : Evaluation of the physical properties of goatskins tanned using banana (Musa spp.) leaf midrib tannins Type de document : texte imprimé Auteurs : James K. Wangui, Auteur ; Benson Ongorora, Auteur ; Douglas Onyancha, Auteur Année de publication : 2024 Article en page(s) : p. 13-19 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bananier et constituants Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés physiques Cuirs et peaux de chèvres Mimosa et constituants Tannage végétal Température de retrait Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Vegetable tannins have been studied over the years with an aim to reduce the pollution load caused by chrome tanning. Although mimosa tannins have been utilized commercially, they are expensive and not readily available. The purpose of this study was to assess the physical properties of leather tanned with banana leaf midribs tannins in order to determine their suitability as vegetable tannins. Selected banana leaf midrib samples were collected from Gikondi village in Mukurweini, Nyeri County, Kenya. They were shade-dried and ground into powder. The skins were processed conventionally using banana leaf midribs tannins of Musa sapientum Linn. and ‘Muraru’ (AA genome), with mimosa as a control. The physical properties of the resultant leathers were determined following the standard IUP methods. It was found that Musa sapenitum Linn, ‘Muraru’ (AA genome) and mimosa-tanned leathers had average shrinkage temperatures of 80.33 ± 0.74°C, 78.67 ± 0.47°C and 81.67 ± 0.94°C, respectively. The properties of the tanned leathers were compared with those of the control-tanned leather. Assessment of the physical properties indicated that the leathers met the minimum recommended values safe for Musa sapentium Linn-tanned leather, which failed at 30,000 flexes. These results indicate that banana leaf midribs can be used as an organic tanning agent source for production of leathers from goatskins. Note de contenu : - EXPERIMENTAL : Materials - Tanning process - PHYSICAL TESTING : Sampling and sample preparation- Determination of shrinkage temperature - Mechanical analysis of the tanned leathers - RESULTS AND DISCUSSION : Tanning - Physical properties of the tanned leathers - Shrinkage temperature - Tensile strength - Tear strength - Table 1 : Process recipe for Mimosa tanning - Table 2 : Process recipe for banana leaf midrib tanning - Table 3 : Physical properties of selected banana leaf midrib tanned leathers and mimosa tanned leather - Grain crack and ball burst - Flexing endurance DOI : https://doi.org/10.34314/jalca.v119i1.8290 En ligne : https://drive.google.com/file/d/1CRhkpRovl3M5V4rZjc83y9rKE9FjEEaH/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40345 [article]

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Green fire retardant finishing and combined dyeing of proteinous wool fabric / Santanu Basak in COLORATION TECHNOLOGY, Vol. 132, N° 2 (04/2016)  

[article]  inCOLORATION TECHNOLOGY > Vol. 132, N° 2 (04/2016) . - p. 135-143 Titre : Green fire retardant finishing and combined dyeing of proteinous wool fabric Type de document : texte imprimé Auteurs : Santanu Basak, Auteur ; Kartick K. Samanta, Auteur ; Sajal K. Chattopadhyay, Auteur ; Pintu Pandit, Auteur ; Saptarshi Maiti, Auteur Année de publication : 2016 Article en page(s) : p. 135-143 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bananier et constituants Déchets agricoles -- Recyclage Essais dynamiques Ignifugeants Composé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface. Laine Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : Flame retardancy was imparted to a scoured and bleached, proteinous woollen textile by using banana pseudostem sap, an ecofriendly waste agricultural product, at different pH levels. The flame retardancy characteristics of both the control and the treated fabrics were analysed in terms of the limiting oxygen index and the vertical flammability measurement. Thermal degradation and fire retardancy mechanisms were studied using thermogravimetry, scanning electron microscopy, and energy dispersive X-ray analysis. Moreover, the charring mechanism of both the control and the banana-pseudostem-sap-treated fabrics with varying pH was analysed and reported in detail. The wool fabric was also dyed with CI Acid Blue 25 using banana pseudostem sap as well as water as the medium. The fabric dyed with the banana pseudostem sap medium at pH 5.5 showed more colour exhaustion, colour strength, and thermal stability compared with the control wool fabric. The mechanism by which superior fire retardancy and colour strength are imparted to the woollen textile by the application of banana pseudostem sap is proposed. Note de contenu : - MATERIALS AND METHODS : Material and BPS application - Determination of percentage add-on - Thermal characterisation - Dyeing of wool fabric - Colour parameters - Thermogravimetry and differential thermal analysis under nitrogen and in an air atmosphere - Scanning electron microscopy and energy dispersive X-ray analysis - Wash durability test - Mechanical strength - RESULTS AND DISCUSSION : Flame retardancy analysis - Thermogravimetry and differential thermal analysis - Scanning electron microscopy and energy dispersive X-ray analysis - Char characteristics - Wash durability to finish - Mechanical properties - Coloration of the wool fabric - Mechanism of the fire retardant finish and dyeing DOI : 10.1111/cote.12200 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12200 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25864 [article]

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Hybrid nonwovens-based composite made of banana fiber and biodegradable polyester / Maryam Sodagar in TECHNICAL TEXTILES, Vol. 66, N° 1 (2023)  

[article]  inTECHNICAL TEXTILES > Vol. 66, N° 1 (2023) . - p. 38-39 Titre : Hybrid nonwovens-based composite made of banana fiber and biodegradable polyester Type de document : texte imprimé Auteurs : Maryam Sodagar, Auteur ; Anne Hennig, Auteur ; Carsten Uthemann, Auteur ; Frederik Cloppenburg, Auteur ; Thomas Gries, Auteur Année de publication : 2023 Article en page(s) : p. 38-39 Langues : Multilingue (mul) Catégories : Bananier et constituants Composites à fibres -- Propriétés mécaniques Composites à fibres végétales Essais dynamiques Fibres libériennes Fibres polyesters Mélanges de fibres Nontissés Textiles et tissus -- Emploi dans l'industrie automobile Index. décimale : 677.4 Textiles artificiels Résumé : In a simple eco-friendly, low-cost mechanical process, banana fibers can be extracted from the stem of the banana plants. Due to their environ¬mentally friendly characteristics, low cost, light weight, and good specific mechanical properties, plant-based fibers can replace various synthetic fibers in many areas of application such as the marine, automotive, aerospace, and construction industries. In order to reduce CO2 emissions which are not only emitted by burning and burial of banana cultivation byproducts, but also by the end-of-life disposal of vehicles, Biointerio, a startup initiative at RWTH Aachen University, is working towards manufacturing valuable composite products from banana fibers for the automotive industry. Note de contenu : - Fig. 1 : Nonwovens-based composite manufacturing process - Fig. 2 : Flexural and tensile strength of Biointerio's banana bast fiber composite - Fig. 3 : Consolidated composite plates of biointerio En ligne : https://drive.google.com/file/d/14q5A6QF5g6GZmey_OHUzc_GsGmZURgEx/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38928 [article]

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Hybrid nonwovens-based composite made of banana fiber and biodegradable polyester / Maryam Sodagar in MAN-MADE FIBERS INTERNATIONAL, Vol. 73, N° 1 (2023)  

[article]  inMAN-MADE FIBERS INTERNATIONAL > Vol. 73, N° 1 (2023) . - p. 52-53 Titre : Hybrid nonwovens-based composite made of banana fiber and biodegradable polyester Type de document : texte imprimé Auteurs : Maryam Sodagar, Auteur ; Anne Hennig, Auteur ; Carsten Uthemann, Auteur ; Frederik Cloppenburg, Auteur ; Thomas Gries, Auteur Année de publication : 2023 Article en page(s) : p. 52-53 Langues : Anglais (eng) Catégories : Bananier et constituants Fibres libériennes Fibres polyesters Fibres végétales Fibres végétales -- Propriétés mécaniques Flexion (mécanique) Matériaux hybrides Nontissés Plaques (ingénierie) Traction (mécanique) Index. décimale : 677.6 Tissus obtenus par des procédés spéciaux, quelle que soit leur composition : jacquard, feutres tissés et non tissés, tapisseries, tissus ajourés Résumé : In a simple eco-friendly, low-cost mechanical process, banana fibers can be extracted from the stem of the banana plants. Due to their environmentally friendly characteristics, low cost, light weight, and good specific mechanical properties, plant-based fibers can replace various synthetic fibers in many areas of application such as the marine, automotive, aero-space, and construction industries. In order to reduce CO2 emissions which are not only emitted by burning and burial of banana cultivation byproducts, but also by the end-of-life disposal of vehicles, Biointerio, a startup initiative at RWTH Aachen University, is working towards manufacturing valuable composite products from banana fibers for the automotive industry. Note de contenu : - Fig. 1 : Nonwovens-based composite manufacturing process - Fig. 2 : Flexural and tensile strength of Biointerio's banana bast fiber composite - Fig. 3 : Consolidated composite plates of Biointerio En ligne : https://drive.google.com/file/d/110ulcH-gNVfA4ymn_cNEaXqWP6YPjGGZ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39138 [article]

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Peracetic acid bleaching of banana fibre: Process optimisation / S. N. Chattopadhyay in COLORATION TECHNOLOGY, Vol. 139, N° 6 (12/2023)  

[article]  inCOLORATION TECHNOLOGY > Vol. 139, N° 6 (12/2023) . - p. 678-688 Titre : Peracetic acid bleaching of banana fibre: Process optimisation Type de document : texte imprimé Auteurs : S. N. Chattopadhyay, Auteur ; Kartick K. Samanta, Auteur ; L. Ammayappan, Auteur ; R. K. Ghosh, Auteur Année de publication : 2023 Article en page(s) : p. 678-688 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de blanchiment Bananier et constituants Fibres végétales -- Propriétés chimiques Fibres végétales -- Propriétés physiques Peracétique, Acide L'acide peracétique ou acide peroxyacétique (formule chimique: C2H4O3) (ou PAA) est un acide et agent oxydant très puissant utilisé dans l'Industrie pharmaceutique et le domaine médical comme oxydant, biocide désinfectant ou "stérilisant à froid" de certains dispositifs médicaux5. Ses propriétés oxydantes sont connues depuis 1902. Cette molécule est très soluble dans l'eau, l'alcool et l'éther. Fabrication : Il est le plus souvent produit en faisant agir de l'anhydre mixte boroacétique sur du peroxyde d'hydrogène (eau oxygénée). Dégradation : En condition normale, ce produit se dégrade en sous-produits non toxiques (acide acétique, oxygène et eau). Efficacité comme biocide : Utilisé seul ou avec du chlore ou des formaldehydes, sous forme liquide8 ou gazeuse (vapeur d'acide peracétique), il tue la plupart des micro-organismes libres en libérant de l'oxygène avec production d'hypochlorite ou de radicaux hydroxyles. Il est le plus efficace des désinfectants du marché sur les bactéries Gram-positives et Gram-négatives (moins de 5 minutes à faibles concentrations sur des bactéries libres), sur Mycobacterium tuberculosis et sur les spores. Index. décimale : 667.3 Teinture et impression des tissus Résumé : Banana is an important commercially available natural fibre, suitable for making coarse yarns. It has also potential for making fine home and apparel textiles after requisite chemical intervention or blending with other fine fibres. For making such products, chemical processing, namely bleaching, coloration and finishing, play an important role. Bleaching of fibre is generally carried out in highly alkaline condition and at high temperature of 85°C using hydrogen peroxide to achieve whiteness index of > 70 with about 25% loss in tensile strength. To achieve a similar whiteness index, while addressing strength loss, a fibre friendly low-temperature low-alkali based peracetic acid (PAA) bleaching of banana fibre has been proposed in the present article. Important bleaching process parameters, namely PAA concentration (10–30 g/L), time (60–180 min) and temperature (60–80°C), have been varied for optimisation of the bleaching process. Banana fibre bleaching using PAA concentration of 20 g/L at 70°C for 2 h can produce fibre with whiteness index of > 70, which is suitable for subsequent coloration. The PAA bleached banana fibre can retain 84% of its bundle strength and 95.6% of its weight. Physical (strength, fineness), chemical (attenuated total reflectance Fourier-transform infrared [ATR-FTIR], energy dispersive X-ray spectroscopy [EDX]), optical (colour) and morphological (scanning electron microscopy [SEM]) properties of banana fibres before and after bleaching were evaluated to study the efficacy of the process. Note de contenu : - EXPERIMENTAL : Materials - Chemicals - Mild scouring and peracetic acid bleaching - Fibre properties evaluation - Fibre physical and chemical properties - RESULTS AND DISCUSSION : Properties of banana fibre - Bleaching of fibre - Physical and chemical properties in optimised condition - Table 1 : Properties of banana fibre in comparison to jute - Table 2 : Process variable for peracetic acid (PAA) bleaching of banana fibre - Table 3 : Properties of scoured and bleached banana fibre in optimised condition - Table 4 : Atomic percentage in the banana fibres before and after peracetic acid (PAA) bleaching DOI : https://doi.org/10.1111/cote.12681 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12681 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40119 [article]

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Utilisation of waste plaintain (Musa paradisiaca) peels and waste polystyrene in the development of reinforced polymer composites / Adewale George Adeniyi in INTERNATIONAL POLYMER PROCESSING, Vol. XXXV, N° 3 (07/2020)  

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