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Novel Superabsorbent Membranes Made of PVA and Ziziphus Spina-Christi cellulose for Agricultural and Horticultural Applications

Abstract

Novel superabsorbent membranes consisting polyvinyl alcohol (PVA), cellulose nanocrystals (CNCs) from Ziziphus Spina-Christi fibers (ZSP-fibers), Glutaraldehyde (GLA) and glycerin (G) were prepared by Hydraulic Lamination Hot Press machine. Crosslinking of PVA was used to improve applications of agricultural and horticultural. Plasticizer used to increase the plasticity of superabsorbent membranes. Ziziphus spina-christi fibers is the new source to isolate pure cellulose via using mechanical and chemical treatment. These membranes were characterized by FTIR, XRD, SEM, TP and DSC. Superabsorbent membranes showed greater equilibrium swelling capacity compared with neat hydrogel. Moreover, water transport mechanism of all superabsorbent membranes was Fickian diffusion type. The influence of various factors, such as different loads (1, 3,5, 7 and 10 wt.% from CNCs) with time, solution pH, saline solution and reswelling capability on the swelling behavior of superabsorbent membranes were also estimated. Superabsorbent membranes exhibited good pH-dependent swelling reversibility and high water retention capability, making it more efficient water-saving material. The biodegradability of the superabsorbent membranes was evaluated under environmental changes. The superabsorbent membranes were also explored for antimicrobial activities against pathogenic bacteria like Candida Albicans (fungus), Bacillus subtilis (G+Ve), Staphylococcus aureus (G+Ve), Proteus Vulgaris (G-Ve) and Erwinia Carotovora (G-Ve). The results showed that design of innovative bioactive superabsorbent membranes are promising for agricultural and horticultural applications.

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Publication details

The article was received on 15 May 2017, accepted on 11 Jul 2017 and first published on 12 Jul 2017


Article type: Paper
DOI: 10.1039/C7NJ01676J
Citation: New J. Chem., 2017, Accepted Manuscript
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    Novel Superabsorbent Membranes Made of PVA and Ziziphus Spina-Christi cellulose for Agricultural and Horticultural Applications

    E. Abdel Bary, A. Fekri, Y. Solomon and A. Harmal, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ01676J

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