An alternative route to lower the flammability of viscose fibres is presented. Silica layer acts as a thermal insulator, shifting the temperature at which cellulose starts to degrade to higher values. Likewise, the silica coating also serves as a barrier for oxygen, as evidenced from a significant shift of exothermic peaks (attributed to oxygen combustion) to higher temperatures. The modification efficiency is conditioned by the homogeneity of nanocoating which is influenced by the fibre surface morphology, therefore fibres pre-treatment processes were studied and used.
COBISS.SI-ID: 3823130
The synthesis of new iminocoumarina and their transformation to the N-chloro and hydrazono substituted coumarin derivatives were presented in the article. Knoevenagel reaction between 2-hydroxybenzaldehydes and active methylene compounds (malononitrile and ethyl cyanoacetate) produces iminocoumarins and/or coumarins. The ratio between the possible products strongly depends on the nature of the aromatic ring substituents.
COBISS.SI-ID: 9647638
Original scientific paper, in which we presented a new luminiscent europium probe for determination of phosphate (P) in microtiter plate format. The assay is based on the quenching of the luminescence of the europium–tetracycline (EuTc) 1:1 complex by phosphate using a reagent concentration of 20.8 µmol/L. The linear range of the calibration plot is from 5 × 10-6 mol/L to 7.5 × 10-4 mol/L of phosphate, and the limit of detection is 3 µmol/L. The system works best at neutral pH 7 and is therefore suitable for phosphate determination in biological and biochemical systems.
COBISS.SI-ID: 10105110
Original scientific article examines the treatment efficiency of constructed wetland for coloured textile wastewaters with the intention to developed an universal, simple, cheap, environmentally-friendly, but still enough efficient biological treatment procedure. Different natural materials (sand, peat, tuff) were applied in the research as biomass support media, which imitate self-purifying processes in natural ecosystems with numerous physical and chemical processes such as filtration, sorption, ion exchange, complex formation and degradation with microorganisms.
COBISS.SI-ID: 10945558
In our research, we determined the antimicrobic laundering effect by simulating a common laundering procedure for hospital textiles in the laboratory washing machine at different temperatures by the use of bioindicators. Enterococcus faecium, Staphylococcus aureus, Mycobacterium terrae, Enterobacter aerogenes, and Pseudomonas aeruginosa were used for determining the antibacterial laundering effect. Candida albicans was used for determining the antifungal laundering effect.
COBISS.SI-ID: 10756118