الفهرس 
Chapter 1 (IntroductionOnly 14 pages are availabe for public view
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Abstract
Superabsorbent polymers (SAP) of carboxymethyl cellulose acrylamide carboxymethyl celullose/acrylamide/Silica (CMC/AM/Si) and carboxymethyl cellulose /Polyvinyl alcohol (CMC/PVA) were synthesized by radiation - induced grafting using γ - irradiation technique. The effects of various parameters, such as irradiation dose, the content of CMC, P AM, PVA, and Silica gel on the swelling percent of produced hydrogels have been evaluated. The kinetic equilibrium swelling of the prepared copolymer hydrogels was studied, it was found that the maximum swelling percent was 5000 % for the CMC/ PAM hydrogel, 12000 % for the CMC/ P AM/Si composite hydrogel, and 6200 % for the CMC/PVA hydrogel . The gel fr action, equilibrium swelling and effect of pH on the swelling percent were also studied. Th e prepared copolymers were also characterized by FTIR spectral analysis, thermo gravimetric analysis (TGA), and scanning electron microscopy (SEM) techniques. In ord er to evaluate its controlled release potential, different prepared hydrogels were loaded with KNO 3 as an agrochemical model and its poten tial for controlled release of KNO 3 was studied and evaluated with respect to different parameters such as time of rel ease, pH of the medium, and temperatures. The results obtained from swelling, loading of KNO 3 , and release behavior studies suggested and recommended the possible use of prepared hydrogels for e nhancing the plantation of Linum Usitatissimum .