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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