Thermal behavior of the copolymers based on styrylphosphonic acid

The main property of copolymers containing phosphonic acid group at side chain is the proton conductivity, therefore there copolymers have strong metal complexation properties, due to the presence of phosphonic group. The copolymers of styrylphosphonic acid and acrylic monomer at different molar ratios were synthesized by thermal polymerization and charcterized by FTIR, thermal analysis and ionexchange capacity. The copolymers present good ion-exchange capacity and can be used as potential ion exchangers

Polyester resin coatings as barrier against aggressive agents : influence of volumetric pigment concentration

In this paper we present experimental results of electrochemical measurements (EIS and anodic polarization) on the performance of polyester copolymers films obtained at the various volumetric pigment content (VPC)

Polyaniline - morphology and sensing properties

The adsorption process of dye on polyaniline films electrodeposited on niobium has been investigated using electrochemical impedance spectroscopy. ads value (- 35.802 kJ mol-1 ) and high value of Kads obtained in our measurements indicate that Amino Black 10 adye adsorption process is spontaneous with the formation of a stable adsorbed dye layer on the polyaniline surface. The adsorption takes place via a combination of physical and chemical adsorption

Mass-spectrometry used in characterization of pigments

Naphthol AS pigmens synthesised by RPTC were characterized by M2 mass spectrometry. The rezults show that this technique is not very a reliable method for characterization of such compounds

Electrochemical synthesis of poly-3-aminophenylboronic acid in sulfuric acid solution

Sensors based on the complexation of boron groups with diols are an attractive alternative to detection of biologic compounds in particular dopamine. The electropolymerisation of 3- aminophenylboronic acid (APBA) in aqueous solutions on Pt electrodes has been investigated. The obtained poly-3-aminophenylboronic acid is used for the potentiometric detection of dopamine

Porphyrin based-systems for the detection of recoverable metals from Li-Ion batteries : mini-review

The collection and recycling of metals, especially heavy metals, from all types of batteries is a major requirement of European Countries. Market studies highlighted that in the rechargeable battery field, lithium batteries are environmental friendly alternatives to the more polluting Ni-Cd batteries. Although lithium is not expected to bioaccumulate and its human and environmental toxicity are low, one source of lithium with impact to the environment is spent lithium batteries, due to the large variety of Li salts incorporated in polymer electrolyte membranes. Concerning to cathode, new trends are based on nanostructured lithium iron and manganese phosphate. Whatever are the metals involved in the cathode of batteries (Co-NiMn-Fe) the problem of controlling the efficiency of metals recovery is implying the use of sensor devices. In this paper we are concerned on porphyrin -based sensor devices for the rapid and accurate detection of Li, Ni, Mn