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The rapid development of science, technology, and information technologies in various sectors of the economy imposes increased requirements and expectations in the preparation of engineering professionals in higher education. In recent years, there have been some difficulties in engineering and technology training related to the assimilation of the methodology for constructive thinking, the development of clear and precise knowledge structuring, improvement of the ability of expressing thoughts, and graphical presentation of information.This article presents some applications and best practices in the use of e-learning systems, interactive boards, and accessories. The application of active teaching methods and use of information technologies with interactive tools, providing active involvement of the students in training, leads to considerable interest and improvement in the quality of teaching and learning.

The spectra in middle IR-region of common polymers obtain different characteristic bands which can be analyzed for proper characterization and identification of single polymers in polymer mixture. In the present work the results of multilayer polymer films based on recycled high density polyethylene (HDPE) characterization are presented. The main technological problem in the secondary processing of HDPE is determination of the polymer degradation degree. The most suitable region in the IR-region is between 1850 – 1630 cm-1 , where the carbonyl group displays bands related to the oxidation processes of polyolefins. All IR-spectra have weak absorption in this region which proves the oxidation processes in macromolecular chains. The carbonyl index of the studied films is calculated too. It is proved that the recycling process of HDPE is insignificantly related to its stability, macromolecular characteristics and possibility for secondary processing. The results of present study show a perspective possibility for utilization of huge amounts of waste HDPE as main component in multilayer films with good characteristics, suitable for packaging purposes of foods.