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Paper Information

Journal:   IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)   DECEMBER 2017-JANUARY 2018 , Volume 30 , Number 5 ; Page(s) 391 To 404.
 
Paper: 

PREPARATION AND STUDY ON PROPERTIES OF SUPERABSORBENT HYDROGEL COMPOSITE OF ACRYLAMIDE-ACRYLIC ACID AND ZEOLITE IN AGRICULTURAL USES

 
 
Author(s):  VOSOUGHI SHOHREH, HOJJATI SEYED MAHMOUDREZA*, KASRAIAN ALI
 
* DEPARTMENT OF CHEMICAL ENGINEERING, SHIRAZ BRANCH, ISLAMIC AZAD UNIVERSITY, SHIRAZ, IRAN, POSTAL CODE:74731-71987
 
Abstract: 

Water shortage is one of the most important environmental problems in arid and semi-arid areas which cause complications in land vegetations. The use of superabsorbent hydrogel is one of the most vital methods, which helps to optimize agricultural irrigations. The purpose of this research is preparation and study on properties the superabsorbent hydrogels by copolymerization of acrylamide and acrylic acid monomers using zeolite as nanoclay particles (0, 0.05, 0.1, 0.15). The optimum amount of nanoparticles in relation to its effect on superabsorbent structure and properties, such as water absorbency, was investigated through designing experiments using FFD software. We used methylene bisacrylamide and ammonium persulfate as crosslinker and initiator, respectively. Thermogravimetric analysis (TGA), Fourier transform spectroscopy (FTIR), scanning electron microscopy (SEM) and X-ray diffractometry (XRD) test results showed that the addition of nanoclay up to 0.1 g caused improvement in the physical and chemical properties of superabsorbent such as thermal resistance, porous structure and uniform network structure. The superabsorbent hydrogel could absorb 1100 (g/g) distilled water. The water absorption and water retention of superabsorbent were studied by loading it in 5 different soil texture classes which were 0:100, 25:75, 50:50, 75:25 and 100:0 mixture fractions of sand/loam soil. As a result, it was observed that in the first week after irrigation, the best retention of initial moisture belonged to the soil with 50% sand texture, and also the soil with sand texture returned to its initial weight after 53 days (i.e., 30 days later than the control sample).

 
Keyword(s): SUPERABSORBENT HYDROGEL, ZEOLITE, ACRYLAMIDE, ACRYLIC ACID, SOIL TEXTURE
 
References: 
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