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Inhibition of the coil-helix transition of gelatin and retardation of the gelation process of the system as a whole is an important scientific problem. The solution to this problem will make it possible to maintain the properties of gelatin solutions for a long time without changing their rheological characteristics. In this work, by the method of dynamic mechanical analysis, the dependences of the time profile of gelatin solutions depending on the concentration of 10, 13 and 16 wt.%, as well as the different diss...

Oil is produced in the form of an oil emulsion due to the high depletion of deposits and significant water cut in wells. The formation of emulsions can lead to a number of complications in the operation of various field equipment, and sometimes even to emergency shutdowns or failures. Therefore, the study of the properties of demulsifiers and their effectiveness is an important task. The work investigates the surface-active properties of seven industrial demulsifiers produced in Russia, such as: interfacial and su...

To date, there is an increase in the incidence of skin and subcutaneous tissue diseases, despite the variety of treatment methods. One of the promising class of biomaterials for the treatment of skin diseases can be coatings based on hydrogels. The purpose of this study was to obtain collagen-acrylic hydrogels with various technological parameters (varying the synthesis temperature and the degree of neutralization of acrylic acid) with the specified properties by radical polymerization. The chemical structure of t...

The problem of obtaining compositions, that would act as biomaterials and fit all demands, is well-known. One the branch of application materials such is the hydrogels. High retention capacity of water and physiological fluids, sufficient physio-mechanical properties and safety of usage are ones of the most relevant specifications for medical hydrogels. It is quite hard to develop such formulations. Perspective initial substances for synthesis are gelatin (peptide native to human collagen) and tannin (natural comp...

Fabrication of nanofibers is a field of research attracting a lot of interest from technologici scientists because of its great applications in many fields. In order to design the polymer drug delivery system, we had to select a polymer that is biocompatible, biodegradable, non-toxic and approved for medical use. One of the polymers that fulfill those requirements is poly (vinyl alcohol) (PVA). There have been various reports on the fabrication of PVA nanofibers with solvents as water, or water with different salt...