Fabrication of highly hydrophobic paper by coating with modified collagen hydrolysate / Yaohui You in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 2 (03-04/2014)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 98, N° 2 (03-04/2014) . - p. 69-75 Titre : Fabrication of highly hydrophobic paper by coating with modified collagen hydrolysate Type de document : texte imprimé Auteurs : Yaohui You, Auteur ; Yunhang Zeng, Auteur ; Yishan Liu, Auteur ; Xuepin Liao, Auteur ; Bi Shi, Auteur Année de publication : 2014 Article en page(s) : p. 69-75 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anhydride alcényle succinique Biopolymères Collagène Dip-coating Hydrolysats de protéines Hydrophobie Papier Procédés de fabrication Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : An environmentally friendly biopolymer (CAA) used as a coating material for the preparation of hydrophobic paper has been developed by incorporating alkenyl succinic anhydride (ASA) into collagen hydrolysate (CH), the base paper was treated with CAA by a dip-coating technique to improve its water resistance. It was found that the acylated CH has a significantly higher surface hydrophobicity than CH and that coating with CAA is beneficial to improve the hydrophobic property of paper. Experimental results indicated that the contact angle of water droplet on CAA-coated paper surface was about 125° and the CIO ratio of CAA-coated paper was increased to 3.76. XPS analysis and FESEM images of paper surfaces proved that CAA was well retained on the surface as a hydrophobic layer. Moreover, the strength properties of CAA-coated paper were superior to those of uncoated paper. Note de contenu : - Materials - Preparation of CH - Syntheses of CAA - Properties of CAA - Properties of CAA/CH-coated papers En ligne : https://drive.google.com/file/d/1gYPnS1drOfHgozGK82vSCFvnbzwaeuNJ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21137 [article]

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Utilization of tannery solid waste : Dry strength additive for papermaking / Yaohui You in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 7 (07/2013)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVIII, N° 7 (07/2013) . - p. 250-256 Titre : Utilization of tannery solid waste : Dry strength additive for papermaking Type de document : texte imprimé Auteurs : Yaohui You, Auteur ; Yunhang Zeng, Auteur ; Yishan Liu, Auteur ; Bi Shi, Auteur ; Xuepin Liao, Auteur Année de publication : 2013 Article en page(s) : p. 250-256 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Additifs Ammonium Cations Collagène Cuirs et peaux -- Déchets -- Recyclage Hydrolysats de protéines Papier Papier -- Propriétés mécaniques Procédés de fabrication Tannage Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : An approach of utilizing tannery solid waste was developed by using untanned solid waste as raw material to prepare a dry strength additive for papermaking. Cationic derivatives of collagen hydrolysate (C-CHs) were prepared by incorporating (2,3-epoxypropyl) trimethyl ammonium chloride into collagen hydrolysates with different molecular weights. C-CHs were employed in sheet formation for enhancing physical properties of hand-sheets, and the results indicated that C-CHs were useful in tap water and white water to improve the tensile strength and folding endurance of the hand-sheets. This should be due to the fact that C-CHs with cationic moieties are prone to be retained in anionic cellulose fibers, which is beneficial for the formation hydrogen bonds among hydroxyl groups in the cellulose fibers. Note de contenu : - EXPERIMENTAL : Materials - Preparation of CHs with different molecular weights - Cationization of CHs to obtain C-CHs - Effectiveness of C-CHs in sheet formation - RESULTS AND DISCUSSION : characteristics of C-CHs - Effectiveness of C-CHs in sheet formation En ligne : https://drive.google.com/file/d/11rFGXylHlX9eyLITVAEw2vFxg9Y-XQvX/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19009 [article]

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