| Titre : |
Synthesis and urea-loading of a novel biosuperabsorbent polymer based on leather waste |
| Type de document : |
texte imprimé |
| Auteurs : |
Hu Zaiyin, Auteur ; Yi Shouhong, Auteur ; Hu Wei, Auteur ; Yuling Tang, Auteur ; Wang Ru, Auteur |
| Année de publication : |
2015 |
| Article en page(s) : |
p. 51-57 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Absorbants et adsorbants
Copolymère acide acrylique acrylamide
Copolymères -- Synthèse
Cuirs et peaux -- Déchets -- Recyclage
Greffage (chimie)
Humidité -- Absorption:Eau -- Absorption
Urée
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
In order to develop an eco-friendly polymer, a novel superabsorbent polymer was synthesized by grafting the alkaline hydrolysis product of Leather waste (LW) to a copolymer of acrylic acid (AA) and acrylamide (Afv1)(PLW-g-(AA-co-AM) with microwave method assistance. The morphology of the samples was examined by scanning electron microscopy (SEM). Through a single factor experiment, various factors were explored which may affect the water absorption of such a superabsorbent polymer du ring preparation. The results showed that the optimum technological conditions of synthesizing PLW-g-(AA-co-AM) were : dosage of LW 15wt.% of total monomer mass, cross-linking agent 0.06wt.°/0 of monomer mass, neutralization degree 75%, AA: AM= 6 :1, initiator 0.6wt.% of monomer mass. According to this procedure, the PLW-g-(AA-co-AM) with a water-absorbency of 1191.5g/g and salt-absorbency of 94.4g/g was obtained. The product was used as adsorbant for urea, the urea load rate reached 87.76% when the concentration of urea was 10g/L. Meanwhile, the release of urea from the loaded PLW-g-(AA-co-AM) in deionized water exhibited specific release properties. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURE : Materials - Swelling measurements : Tea-bag method - Instrumental analysis
- RESULTS AND DISCUSSIONS : Optimization of the grafting conditions - Loading and release of urea |
| En ligne : |
https://drive.google.com/file/d/1PiVWaSmKFsQTY_zL8lgdvGzkXTi9x7V3/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23741 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 99, N° 2 (03-04/2015) . - p. 51-57
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