Category Archives: Year 2010 Issue 4

Analytical possibilities of generating volatile hydrides in optical emission spectrometry (HG-ICP-OES) Part 1. Theoretical fundamentals of the process.

Analytical possibilities of generating volatile hydrides in optical emission spectrometry (HG-ICP-OES) Part 1. Theoretical fundamentals of the process. Magdalena PIĄTKOWSKA - Analytical Laboratory at the Institute for Inorganic Chemistry,Gliwice Please cited as: CHEMIK 2010, 64, 4, 294-301 The analytical possibilities of arsenic and other hydride forming elements determination in environmental materials involving hydride generation techniques were discussed. On the basis of some literature reviews, number of factors affecting hydride generation efficiency, such as: element oxidation state in solution, reducer type and concentration, acid type and...
Read more

Oligocarbonate diols obtained from carbonate ?green monomers? as soft segments of polyurethanes

Oligocarbonate diols obtained from carbonate ?green monomers? as soft segments of polyurethanes Karolina M. TOMCZYK, Piotr PAWŁOWSKI, Paweł G. PARZUCHOWSKI, Gabriel ROKICKI ? Warsaw University of Technology, Faculty of Chemistry, Warsaw Please cited as: CHEMIK 2010, 64, 4, 284-293 This paper presents various methods of oligocarbonate diols (OWDs) synthesis based on environmentally friendly materials. Taking into account the price and availability of raw materials, lack of hazardous by-products and the process efficiency, especially attractive methods of oligocarbonate diols obtaining seem to be those in which...
Read more

Rheological analysis of PVC plastisols containing a surfactant, an organic pigment, a thickener and water

Rheological analysis of PVC plastisols containing a surfactant, an organic pigment, a thickener and water

Edwin MAKAREWICZ, Iwona DOBIAŁA ? University of Technology and Life Sciences in Bydgoszcz Please cited as: CHEMIK 2010, 64, 4, 274-283 The results of rheological investigations of poly(vinyl chloride) plastisols containing constant amount of surfactant and increasing amount of water are presented. It was found that inversion phase phenomenon occurs. The next investigations determined influence addition of organic pigment and water in composition. The results show that pigment addition increases viscosity....
Read more

Research on the physical modification of PMMA-PO waste

Research on the physical modification of PMMA-PO waste

Izabela GAJLEWICZ - Institute for Engineering of Polymer Materials and Dyes, Branch Department of Paints and Plastics in Gliwice Please cited as: CHEMIK 2010, 64, 4, 268-273 The aim of the paper was to work out a recycling method for a mix of poly(methyl methacrylate) (PMMA) and polyolefines (PO) ? polyethylene (PE) or polypropylene (PP). A physical modification of after-utility PMMA/ PO waste mixes has been carried out. In order to obtain a usable material with...
Read more

Effect of molybdenum disulphide and graphite on tribological properties of vulcanizates of hydrogenated butadiene-acrylonitrile rubber

Effect of molybdenum disulphide and graphite on tribological properties of vulcanizates of hydrogenated butadiene-acrylonitrile rubber

Urszula OSTASZEWSKA, Jacek MAGRYTA, Michał LEWANDOWSKI, - Institute for Engineering of Polymer Materials & Dyes, Department of Elastomers and Rubber Technology, Piastów Please cited as: CHEMIK 2010, 64, 4, 254-267 The results of modification of the compositions of the rubber compound IRP 1078, HNBR-containing, with molybdenum disulphide and submicrometer graphite were presented. Improvement of the tribological properties was the aim of the modification. It was found that each of this...
Read more

Triple processing of polylactide affect on mechanical, rheological and thermal properties.

Triple processing of polylactide affect on mechanical, rheological and thermal properties.

Rafał MALINOWSKI- Institute for Engineering of Polymer Materials and Dyes, Toruń; Sebastian RICHERT ? PLASTMAL JAKO Sp. z o.o., Toruń Please cited as: CHEMIK 2010, 64, 4, 246-253 This article describes research studies on using triple processing biodegradable polymers to obtain products like sheets. Polylactide (PLA), one of the most known and generally processed biodegradable polymer, was used as research material. Basic properties, like strength, rheological and thermal ones of untreated PLA have been...
Read more

Comparison of methods for the surface free energy determination of polimeric layers aligning liquid crystals

Comparison of methods for the surface free energy determination of polimeric layers aligning liquid crystals

Sebastian FIRLIK, Jarosław MOLENDA ? Institute for Sustainable Technologies - PIB in Radom; Jerzy BORYCKI ? Technical University of Radom, Materials, Technology and Designing Department, Radom Please cited as: CHEMIK 2010, 64, 4, 238-245 The goal of the study was to compare methods for determination of the Surface Free Energy and its components for poly(amide-ester-imide) layers used to align crystal molecules. Once the polymeric layers were relevantly prepared, their contact...
Read more

Collagen application in drug formulation technology. Achievements and perspectives

Collagen application in drug formulation technology. Achievements and perspectives.

Artur TUREK - Department of Biopharmacy, Medical University of Silesia, Sosnowiec, Poland; Janusz KASPERCZYK - Department of Biopharmacy, Medical University of Silesia, Sosnowiec, Poland; Centre of Polymer and Carbon Materials, Polish Academy of Sciences, Zabrze, Poland; Zofia DZIERŻEWICZ - Department of Biopharmacy, Medical University of Silesia, Sosnowiec, Poland Please cited as: CHEMIK 2010, 64, 4, 229-237 Collagen belongs to the well-known biopolymers. Developing of its properties has shown that it can be used in the...
Read more

Chemistry and pharmacy closer to nature. How to prolong healthy life with natural compounds?

Chemistry and pharmacy closer to nature. How to prolong healthy life with natural compounds?

Iwona WAWER ? Medical University of Warsaw, Faculty of Pharmaceutical, Department of Physical Chemistry, Warsaw Please cited as: CHEMIK 2010, 64, 4, 219-227 Modern medicine (especially personalised and nutritional approach) focuses more attention on the diet, life style and the environment. Scientists have to examine more closely what we are eating, how diseases can be treated more rationally, and how we can more effectively use our natural resources. The pharmaceutical...
Read more