نتایج جستجو برای: superabsorbent polymer
تعداد نتایج: 93400 فیلتر نتایج به سال:
Agricultural residues and various other materials are currently being used as additives to improve the physical and chemical properties of soil. Iran is located in an arid and semiarid region, so using strategies to reduce water use will reduce the problem water scarcity. The use of superabsorbent to increase water uptake and retention is one of the solutions that have been applied to improve w...
As far as Iran is concerned in arid and semi-arid region and amount of water is limited, improvement of water consuming is very important. One of the ways for storing water is to use superabsorbent polymer. So, this research compared normal and deficit irrigation methods by considering the effects of stockosorb (0.1% and 0.3% by volume) and zeolite (10 weight% and 15 weight%) in two sandy soils...
The aim of this study is to investigate how the absorption capacity a superabsorbent polymer (SAP) in cement paste influenced by number variables: type, water-to-cement ratio (w/c), additive, dry SAP particle size, mixing time, and temperature. By means air void analysis hardened paste, specific surface voids are obtained. Parallel direct measurement surface, parameter also derived from size ca...
New superabsorbent hydrogels were synthesized through free radical graft copolymerization of partially neutralized acrylic acid (AA) and 2-acrylamido-2-methylpropanesulfonic acid (AMPS) onto carboxymethyl cellulose (CMC) backbones. The structure and morphology of the synthesized superabsorbent hydrogels were characterized by Fourier transform infrared spectroscopy and scanning electron microsco...
introduction reduced availability of water resources in many arid countries including iran, particularly in response to the indiscriminate harvesting of water reservoirs and climate change, has created concerns. therefore, the sustainable use of water resources especially in agriculture is a necessity for these countries. strategies such as deficit irrigation and superabsorbent application are ...
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