Many biomedical applications including controlled drug delivery systems have been developed based on hydrogel technologies. Different composite hydrogels including synthetic and natural polymers can be produced to controllable systems in drug deliver application. In this study, p...
Open access
Research Article10.9734/IRJPAC/2016/28989
Transition metals complexes with a given structure could be alternatives in treatment of some incurable diseases because the coordination of active ingredients modifies deeply the physiological properties of metals and of ligands. This work is a theoretic study of the coordinatio...
Open access
Research Article10.9734/IRJPAC/2016/29063
Mononuclear complexes of Zn(II) N,N’ coordinated with phendione and phendioxime and polynuclear of Ni(II), Cu(II) and Zn(II) complexes of the phendioxime were synthesized and characterized by direct and template method. Ni(II), Cu(II) and Zn(II) species coordinated by N,N’ of the...
Open access
Research Article10.9734/IRJPAC/2016/18137
A quantum chemical study of the efficiency of some Triazolopyrimidine derivatives as corrosion inhibitors of mild steel in H2SO4 was investigated. The AM1 semi-empirical method and Density Functional Theory (DFT) at the B3LYP/6-31G* level were used. The calculated quantum chemica...
Open access
Research Article10.9734/IRJPAC/2016/28357
Density functional theory (DFT) calculations have been performed to calculate the optimized geometries of stepwise fluorinated methylenecyclopentanes and 1-methylcyclopentenes. Increasing the number of fluorine atoms caused a destabilization of methylenecyclopentane. Perfluorinat...
Open access
Research Article10.9734/IRJPAC/2016/28775
Aim: To synthesize alkyd resin from sandbox seed oil and characterize the alkyd based on the physicochemical and structural properties. Place and Duration of Study: Department of Polymer and Textile Engineering, and Department of Soil Science Technology, both at Federal Universit...
Open access
Research Article10.9734/IRJPAC/2016/28997
Cellulose is an inexpensive, renewable, bio-based and an abundant raw material suitable for the development of filter membranes for water purification. This is because it has numerous functional groups that afford ease of modification to create active surfaces upon chemical modif...
Open access
Research Article10.9734/IRJPAC/2016/28548
Isothermal kinetics of exchange of absorbed water with ethanol in poly(acrylic acid) hydrogel was investigated at different temperatures: 295 K, 303 K and 313 K. By applying isoconversional and model-fitting methods it was found that the exchange of absorbed water with ethanol i...
Open access
Research Article10.9734/IRJPAC/2016/27998
A theoretical study was performed on the methylenecyclobutane and 1-methylcyclobutene in the gas and aqueous phases using PM3 and DFT calculations. Methylenecyclobutane was found to be more stable than 1-methylcyclobutene in the gas and aqueous phases according to PM3 calculation...
Open access
Research Article10.9734/IRJPAC/2016/28006
The disposal of a large amount of polymer waste is one of the major challenges of this century. Use of bio-degradable polymers obtained from sustainable sources presents a solution to this problem. Poly lactic acid (PLA), a bio-degradable polymer, can be synthesized from sustaina...
Open access
Research Article10.9734/IRJPAC/2016/27469
It has recently been shown that nitrogen radicals electrochemically deposited on carbon nanotube paper can catalyze reactions at the cathode of fuel cells. Density functional theory (DFT) is used to show that O2 and HO2 could adsorb on nitrogen radicals such as N2-, N4-, and N8-....
Open access
Research Article10.9734/IRJPAC/2016/27627
A suggested procedure was studied for recovering of uranium selectively from the Abu Zaabal impure phosphoric acid assaying about 46% P2O5 and about 3% iron. This procedure involves the application of an alcoholic precipitation step for most impurities by using isopropyl alcohol...
Open access
Research Article10.9734/IRJPAC/2016/27448
Millet starch (MS) was extracted from millet grains and modified using a physical method (pre-gelatinization). The corrosion inhibition effectiveness of millet starch on mild steel corrosion in 0.5 M H2SO4 solution was investigated using weight loss measurement, potentiodynamic p...
Open access
Research Article10.9734/IRJPAC/2016/27881
Sorption studies of copper (II) phthalocyanine tetrasulfonic sodium acid (CuPc) was done using a batch method with TiO2 powder as the adsorbent, and several variables such as initial concentration of the dye, contact time and TiO2 loading was determined. The sorption data were an...
Open access
Research Article10.9734/IRJPAC/2016/26179
In this study the reactivity of 3-nitrofuran acting as electrophile in their reactions with different dienes, was analyzed in theoretical form. Specifically, the mechanism of each DA reaction was explored. Moreover, considering the polar character of this type of cycloaddition re...
Open access
Research Article10.9734/IRJPAC/2016/27380