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Erschienen in: Journal of Polymer Research 2/2014

01.02.2014 | Original Paper

On the preparation and swelling properties of hydrogel nanocomposite based on Sodium alginate-g-Poly (acrylic acid-co-acrylamide)/Clinoptilolite and its application as slow release fertilizer

verfasst von: Azam Rashidzadeh, Ali Olad, Dariush Salari, Adel Reyhanitabar

Erschienen in: Journal of Polymer Research | Ausgabe 2/2014

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Abstract

A novel slow release fertilizer hydrogel nanocomposite was prepared via free radical polymerization of sodium alginate, acrylic acid, acrylamide, and clinoptilolite using N, N΄-methylene bisacrylamide as a crosslinker and ammonium persulfate as an initiator. Evidence of grafting and component interactions was obtained by a comparison of the Fourier transform infrared spectra of the initial substrates and hydrogel without clinoptilolite with that of the hydrogel nanocomposite containing clinoptilolite. The swelling behavior of both hydrogels in solutions of various pHs (2-12) and various saline solutions such as NaCl, KCl, CaCl2 and FeCl3 as well as swelling kinetics were investigated. Results showed that the swelling of hydrogels depends on the solution pH value. Also, the swelling of both hydrogels in all salt solutions is significantly lower than that of the values in distilled water. After those characterizations, the potential application was verified through sorption and fertilizer releasing from the hydrogel with and without clinoptilolite zeolite. The presence of the clinoptilolite zeolite in the hydrogel caused the system to liberate the nutrient in a more controlled manner than that with the neat hydrogel. The results of the fertilizer release of hydrogel nanocomposite were also encouraging in order to find applications in agriculture. Consequently, the good slow release fertilizer property as well as the good water adsorption capacity showed that this formulation is potentially viable to be used in agriculture as a nutrient carrier vehicle.

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Metadaten
Titel
On the preparation and swelling properties of hydrogel nanocomposite based on Sodium alginate-g-Poly (acrylic acid-co-acrylamide)/Clinoptilolite and its application as slow release fertilizer
verfasst von
Azam Rashidzadeh
Ali Olad
Dariush Salari
Adel Reyhanitabar
Publikationsdatum
01.02.2014
Verlag
Springer Netherlands
Erschienen in
Journal of Polymer Research / Ausgabe 2/2014
Print ISSN: 1022-9760
Elektronische ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-013-0344-9

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