In this work, first, copolymer of butyl acrylate/vinyl acetate (ButAc-co-VAC) was prepared by emulsion polymerization in aqueous medium. In the second step, aniline was polymerized in the copolymer matrix by chemical oxidation polymerization. Polymerization of aniline was carried out in the presece of p-toluene sulfonic acid (PTSA) as do pant.Ammonium per sulfate was used as an initiator. Purified COMPOSITE material of Polyaniline/ (BuA-VAc) was dissolved in dichlorometane byusing mechanical mixer. The films was prepared by casting method. The four-point conductivity measurements showd that the blend conductivity is 2.8 S. cm-1. Cyclic voltammograms (CV) revealed that the blend materials are electroactive. It was shown that the electrical activity of polyaniline was transfered successfully to the blend. Amount of conductivity compared with various do pant ions. The mechanical properties of the films indicated that the blend could be considered as an elastomer.

This paper presents an analytical solution for steady state CONDUCTIVE heat transfer in a cylindrical COMPOSITE laminate. The results of this solution can be pretty useful in investigating heat transfer in pipes and reservoirs. In this research, tensor of thermal conductivity coefficients for COMPOSITE materials is presented and the procedure of determination of the coefficients is described based on the properties of fibers and matrix material. Then, the equation of heat transfer of COMPOSITE materials has been determined in cylindrical coordinates. The research has been done for conditions that fibers are wound around the cylinder and the heat transfer equation has been solved via separation of variables method.

In this work, protective properties of polypyrrole/polyaniline COMPOSITE (as a CONDUCTIVE polymer) have been investigated in 3.5% sodium chloride solution via electrochemical techniques (electrochemical impedance spectroscopy, corrosion potential measurements and anodic polarization tests). Polypyrrole / polyaniline COMPOSITE were deposited on carbon steel substrate by potentiostatic method. The electric capacitance and resistance of the films were monitored with the immersion time to investigate the water permeability of the paint films. Polypyrrole/polyaniline COMPOSITE had a relatively low permeability and good catalytic behavior on passivation of carbon steel in longer periods. The results showed that the COMPOSITE had better anticorrosive behavior compared to homopolymers (polypyrrole and polyaniline).

In this work, CuO nanoparticles (CuO NPs) was prepared by a simple and green method using Rosmarinus officinalis extract containing phenolic constituents as both the chelating and the stabilizing agents. CuO nanoparticles/polyorthoaminophenol COMPOSITE (CuO NPs/POAP) as electro-active electrodes for electrocatalytic oxidation of methanol with good uniformity are prepared by electropolymerization. COMPOSITE of CuO NPs/POAP was synthesized by cyclic voltammetry (CV) methods and electrochemical properties of film were investigated by using electrochemical techniques. New COMPOSITE modified electrode shows a significantly high response for methanol oxidation. This method of synthesis of the catalyst and COMPOSITE has the advantages of high yields, elimination of chemical reagent and simple methodology. Catalytic efficiency remains unaltered even after several repeated cycles.

BACKGROUND AND OBJECTIVE: The congenital anomaly of nose is the one of causes of cosmetic of face and repair of this defect is very difficult. In this article, it was reported a case of congenital hypo plastic nasal alar with failure in operation two times. CASE: A 19 year old female referred with hypo plastic nasal alar who had been already operated two times with a failure in repairing this defect. A COMPOSITE graft from ear with suitable size was inserted in the defect area of nose and it was improved. CONCLUSION: For repairing this anatomical defect and decreasing failure, this new surgical method is suggested.

CONDUCTIVE polymers offer great potential in skin tissue regeneration due to the promoted cellular activity and accelerate healing process. Herein, a polymeric nanofibrous dressing was prepared based on oxidized-nanocrystal cellulose/aminated reduced graphene oxide and polyvinyl alcohol (AD-CNCs/NH2rGO/PVA) to enhance cell proliferation with electrical fields for wound healing. For this purpose, CNCs were produced from cotton cellulose and oxidized in the presence of sodium periodate. Following the synthesis of rGO and its functionalization with amine, the crosslink between oxidized CNCs and NH2rGO was created by the Schiff-base reaction. The prepared nanoCOMPOSITE was mixed with PVA and different proportions of curcumin. The polymeric nanofibrous scaffolds were prepared by electrospinning. With the increase in curcumin content, the hydrophobicity of the composition and the diameter of the nanofibers increased, while the uniformity and mechanical properties were optimized. The PVA/AD-CNCs/NH2rGO/curcumin nanofibrous scaffold exhibited electrical conductivity and satisfactory thermal stability. The PVA/AD-CNCs/NH2rGO/curcumin biodegradable nanofibrous scaffold was biocompatible and presented a satisfactory performance in cell attachment, proliferation and spreading, requirements for wound healing purposes.