The possibilities of using locally available two Iraqi clays kaolin and attapulgite are have been investigated for adsorption of model drug solution of enalapril maleate. U.V. spectrophotometric technique has been utilized to produce quantitative adsorption data at different temperatures. The effect of acidity on the quantity adsorbed of this drug was investigated at Ph = 1.2 in an attempt to simulate the acidity of gastric fluid and at neutral pH. The possible effect of ionic strength on the amount of drug being adsorbed was studied using normal saline at different concentrations. The equilibrium adsorption contact times were determined for both two adsorbents used adsorption isotherms have been analyzed by the Freundlich and Langmuir models. The results of these studies demonstrated that enalapril maleate is adsorbed by both kaolin and attapuligate surfaces, and these two surfaces can be used as a physical antidotes against poisoning by the above drug overdose in vitro.
In the last years, a major attention has been concentrated on the fabricate of conducting polymers doping by nanoparticles because of its unrivaled chemical and physical properties 1−3) . in from between the polymers, polyaniline (PANI) has a large attention to researchers and most widely investigated since it shows excellent stability, ease of prepare, tunable properties, low cost and wide use in electric application such as gas sensor, supercapacitor and batteries 4−7) . Polyaniline with among metal oxide nanoparticles have been studied widely due to their unique size dependent chemical and physical properties creation via the inserting of oxide nanoparticles in the matrix of polymer 8,9) . Clearly this enhances the electrical conductivity, thermal stability, mechanical properties and conductivity process ability for the matrix of polymer. Usually, there are two methods utilize for synthesis PANI-metal oxide nanocomposite. The most commonplace and generally tried method
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