Cellulose fibrils - Sustainable rheology additive for home care products / Rosasilvia Raggio in SOFW JOURNAL, Vol. 149, N° 1 (01-02/2023)  

[article]  inSOFW JOURNAL > Vol. 149, N° 1 (01-02/2023) . - p. 8-13 Titre : Cellulose fibrils - Sustainable rheology additive for home care products Type de document : texte imprimé Auteurs : Rosasilvia Raggio, Auteur Année de publication : 2023 Article en page(s) : p. 8-13 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Assouplissants Compatibilité chimique et physique Détergents Epaississants Fibrilles de cellulose Formulation (Génie chimique) Microcapsules Produits nettoyants Rhéologie Surfactants Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Cleaning products manufacturers are looking for new biobased solutions to replace traditional petrochemical ingredients. They aim to meet consumers’ expectations and conform to new upcoming regulations by reducing the carbon footprint and improving the sustainability profile of the formulated end products. In this paper, we present an innovative rheology additive that represents a sustainable option for the HI&I industry, and a solution to bring new developments closer to meeting environmental goals without compromising the performances. Exilva® cellulose fibrils is a bio-based additive composed of pure cellulose, characterized by rheological and mechanical functionalities that impart a unique combination of properties in finished products. In this paper, we investigate a fabric softener-like system containing Exilva and a cationic surfactant, assessing the compatibility between these two ingredients. We show that small concentrations of cellulose fibrils can structure the formulations and suspend microencapsulated fragrances dispersed in the system, both in case of traditional and new generation microplastic free microcapsules. Note de contenu : - Table 1 : Typical recipe for preparation of cationic surfactant dispersion stabilized with Exilva cellulose fibrils En ligne : https://drive.google.com/file/d/15v5Kryu670yTcHCo0WhNGjaEuB950svq/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38720 [article]

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Growing the bio economy : Emerging development of nanocellulose applications in paint and coating / Shweta Amrutkar in PAINTINDIA, Vol. LXXIII, N° 10 (10/2023)  

[article]  inPAINTINDIA > Vol. LXXIII, N° 10 (10/2023) . - p. 62-101 Titre : Growing the bio economy : Emerging development of nanocellulose applications in paint and coating Type de document : texte imprimé Auteurs : Shweta Amrutkar, Auteur Année de publication : 2023 Article en page(s) : p. 62-101 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules. Fibrilles de cellulose Nanofibres Peinture -- Effets des produits chimiques Polymères cristallins Revêtements (produits chimiques) Revêtements en phase aqueuse:Peinture en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : Nanocellulose has received tremendous attention during the last decade due to its inherent unique properties such as high strength, high surface area, and flexible surface chemistry. Their capacity to form an interconnected network kept together by hydrogen bonds, nanocelluloses perform an unprecedented strengthening action towards cellulose and other fiber-based materials. Furthermore, nanocellulose use implies greener application procedures, such as deposition from water. The surface chemistry of nanocellulose plays a pivotai role in influencing the performance of the coating: tailored surface functionalization can introduce several properties, such as gas or grease barrier, hydrophobicity, antibacterial and anti-UV behavior. The early polymers industry was nearly completely bio-based and cellulose was one of the most important materials. Due to global awareness on the use of more green products, cellulose offers an alternative to petroleum-based products. It is expected that the results showing the explosion that nanocellulose technology is experiencing in current days will still bring more research on the topic and contribute to the expansion of nanocellulosic applications. This review summarizes recent achievements in the interesting emerging applications of nanocellulose in paint and coating industry evidencing critical aspects of coating performances related to deposition technique, nanocellulose morphology, and surface functionalization. Note de contenu : - CELLULOSE - NANOCELLULOSE AND ITS PROPERTIES : 1. Microfibrillated cellulose (MFC)/cellulose nanofibers (CNF) - 2. Cellulose nanocrystal (CNC) microcrystalline cellulose (MCC) - 3. Bacterial cellulose - APPLICATIONS OF NANOCELLULOSE IN PAINT AND COATING : 1. Protective coating - 2. Anticorrosion coating - 3. Self-healing coating - 4. Wood coating - 5. Paper coating - 6. Super hydrophobic coating - 7. Textile coating - 8. Edible coating - 9. Optical coating - 10. Iridescent coating - 11. Fire retardant coating - 12. Stretchable colorful coating - Table 1 : Different types of nancellulose - Table 2 : Summary of chemical modifications of nanocellulose for hydrophobic/superhydrophobic functions/applications En ligne : https://drive.google.com/file/d/1qj1mfCN41d3zkijQ4tSr57MF5UCiJX3d/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40417 [article]

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Hydrophobization of nanocrystalline and microfibrillated cellulose using covalent grafting of plant oil-based copolymers / Tetiana Shevtsova in COATINGS TECH, Vol. 21, N° 1 (01-02/2024)  

[article]  inCOATINGS TECH > Vol. 21, N° 1 (01-02/2024) . - p. 42-47 Titre : Hydrophobization of nanocrystalline and microfibrillated cellulose using covalent grafting of plant oil-based copolymers Type de document : texte imprimé Auteurs : Tetiana Shevtsova, Auteur ; Zoriana Demchuk, Auteur ; Oleh Shevchuk, Auteur ; Sergiy Minko, Auteur ; Andriy Voronov, Auteur Année de publication : 2024 Article en page(s) : p. 42-47 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Angle de contact Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules. Copolymères greffés Energie de surface Fibrilles de cellulose Hydrophobie Matériaux nanocristallins Polymérisation en émulsion Revêtements organiques Traîtements de surface Index. décimale : 667.9 Revêtements et enduits Résumé : Cellulose, a linear polysaccharide biopolymer, has applications in various industries including food packaging, personal care products, and construction, due to its unique physico-chemical properties, as well as its biocompatibility and biodegradability. This study introduces a methodology to enhance the hydrophobicity of nanocrystalline (CNC) and microfibrillated (MFC) cellulose, using the covalent attachment (grafting) of copolymers based on plant oils. Current methodologies for cellulose surface modification are limited in terms of hydrophobizing agents due to both their high cost and the fact that most are not renewable. This study focuses on the surface modification of CNC and MFC by graft copolymers from plant oil-based acrylic monomers (POBMs) developed by this research group. The grafting and the properties of the resulting copolymers were determined using Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS) to demonstrate the presence of grafted POBMs and their impact on the characteristics of modified CNC and MFC. Note de contenu : - Scheme 1 : Grafting of HOSBM-DMAEMA copolymers onto cellulose - Table 1 : Elemental analysis result for CNC and grafted CNC - Table 2 : Water contact angle and surface energy of different formulation En ligne : https://drive.google.com/file/d/1rq2g1IKXk7Y3abEDZxUrYWCPsRgaKbQY/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40429 [article]

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