formic acid

Optimization of Epoxidation Palm-Based Oleic Acid to Produce Polyols

Optimization of epoxidation by using response surface methodology (RSM) based on three-level three-factorial central composite design (CCD) was used. Response percentage of relative oxirane content (%RCO) was studied to determine the optimum reaction condition for production of polyols. The predicted value of model (85 %) was excellent in accordance to experimental value (81 %). All parameters (temperature, molar ratio of formic acid to oleic acid and molar ratio of hydrogen peroxide to oleic acid) were significant in influencing the course of epoxidation reaction (p < 0.05).

THERMOMECHANICAL PROPERTIES OF COMPOSITIONS BASED ON POLYAMIDE 6, OBTAINED FROM THE SOLUTION

Thermomechanical studies of polamide 6 compositions, modified with (MPM) montmorillonite-polyvinylpyrrolidone mixture, were performed. Polyamide 6 nanocomposites were obtained by the solution deposition. The influence of nanocomposite production conditions on morphological features of polymer blends were researched. Determination of thermomechanical properties makes it possible to define the optimal content of MPM in polyamide 6 blends.

Anodic Decomposition of Complexing Agents in Electrolytes Based on Cr(III) Salts at Composite ТіОх/РtОу Electrodes

The kinetics of complexing agents anodic decomposition in electrolytes based on Cr(III) salts was investigated. In Cr(III) electrolytes urea was shown to be fixed in complexes with Cr3+-ions. It was found that the main way of free carbamide degradation was hydrolysis characterized by a high rate (k = 4.5•10-3 min-1). Decrease in formic acid concentration during electrolysis at composite ТіОх/РtОу-anodes was insignificant.