Emulsion based polymer/clay nanocomposites / Onur Yilmaz / Saarbrücken [Germany] : Lambert Academic Publishing (2012)

Titre : Emulsion based polymer/clay nanocomposites : Synthesis, characterization and application in leather finishing Type de document : texte imprimé Auteurs : Onur Yilmaz, Auteur ; Gürbüz Gülümser, Auteur ; Cornelia Vasile, Auteur Editeur : Saarbrücken [Germany] : Lambert Academic Publishing Année de publication : 2012 Importance : XVI-184 p. Présentation : ill. Format : 22 cm ISBN/ISSN/EAN : 978-3-659-19930-1 Prix : 79 E Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Chimie analytique Cuirs et peaux -- Finition Monomères Montmorillonite Polyacryliques Polymères en émulsion Polymérisation Rhéologie Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Polymer/clay nanocomposites are a new class of reinforced polymer materials containing low quantifies of nanometric-sized clay particles which impart them better mechanical, thermal, electrical, barrier properties, chemical resistance, etc., making them valuable materials in many industrial applications such as; coatings, automotive, packaging, construction, and electronics, etc. They have great potential of increasing the fields of use which indicates them as likely to be involved in many various aspects of our lives in the near future. This book explains the preparation of polymer/clay nanocomposites via emulsion polymerization system and reveals a detailed study on the latex stability which arises as a challenge during nanocomposites latex preparations. The improvements of mechanical and thermal properties of the nanocomposite films as well as the rheological aspects of latexes which have crucial importance for coating applications are discussed. The book also includes a case application of the synthesized nanocomposite latexes as binders in leather finishing and the performance of the nanocomposite coatings is reported as well. Note de contenu : - I. LITERATURE SURVEY : Leather finishing and acrylic binders - General features of emulsion polymerization and acrylate based latexes - Preparation of polymer/clay nanocomposites by emulsion polymerization - Rheology of emulsions and nanocomposites - II. SYNTHESIS OF ACRYLIC/MONTMORILLONITE NANOCOMPOSITES VIA EMULSION POLYMERIZATION : Material and methods - III. RESULTS AND DISCUSSIONS : Preliminary experimental results - Nanocomposites including different types of clay Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36800

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Utilization of chromium-tanned leather solid wastes in microencapsulation / Bugra Ocak in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 7 (07/2011)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVI, N° 7 (07/2011) . - p. 232-238 Titre : Utilization of chromium-tanned leather solid wastes in microencapsulation Type de document : texte imprimé Auteurs : Bugra Ocak, Auteur ; Ahmet Aslan, Auteur ; Gürbüz Gülümser, Auteur Année de publication : 2011 Article en page(s) : p. 232-238 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Collagène Cuir -- Déchets Encapsulation Fourier, Spectroscopie infrarouge à transformée de Glutaraldéhyde Huile essentielle de lavande Hydrolysats de protéines Microscopie électronique à balayage Récupération (Déchets, etc.) Recyclage (déchets, etc.) Tannage au chrome Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this research, solid collagen-based protein hydrolysate was isolated from chromium-tanned leather wastes and its chemical properties were determined. After that, the use of collagen hydrolysate (CH) was investigated as a polymeric wall material in the microencapsulation process. The effects of variations in concentrations of CH, lavender oil (LO) and glutaraldehyde (GA), which were used during the microencapsulation process, on the oil load of microcapsules, oil content, encapsulation efficiency and release rate of oil were determined. The morphological structure of the microcapsules was investigated using optical and scanning electron microscopes (SEM). It was determined by FTIR studies that there was no evidence for any significant interaction between CH and LO. Note de contenu : MATERIALS AND METHODS : Preparation of collagen hydrolysate - Phase separation behaviour of collagen hydrolysate - Preparation of microcapsules - Determination of some chemical characteristics of collagen hydrolysate - Calibration curve of lavender oil - Determination of the oil load, oil content and encpsulation efficiency - Oil release studies - Optical and scanning electron microscopy studies - FTIR study. RESULTS AND DISCUSSION : Some chemical characteristics of collagen hydrolysate - The effect on microcapsules of variations in oil concentration - Effects of variation of hydrolysate concentration - The effect of variation in glutaraldehyde concentration - Optical and scanning electron microscopic studies - Fourier Transform Infrared (FTIR) study. En ligne : https://drive.google.com/file/d/1vpL-zU-enBe_sD-OaV0OOevqpaXvpKVM/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12033 [article]

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