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Performance and Migration Stability of PVC Plasticized with Poly(ethylene glycerol sebacate)
1  Nanotechnology REC, South Ural State University, Lenin Prospect 76, 454080 Chelyabinsk, Russia
Academic Editor: Valentina Siracusa

Abstract:

PVC occupies a leading position among thermoplastics in terms of production and application. The main part of PVC is used in the form of plasticized products. The search for alternatives to phthalate plasticizers remains an urgent task, with priority given to materials with low toxicity and migration resistance. Saturated polyesters based on sebacic acid are a promising eco-friendly substitute. The development of PVC materials with such polyesters solves the problems of environmental safety, durability of products and compliance with international standards. Plasticization of polyvinyl chloride was carried out with DOР and polyethylene glycerol sebacinate containing terminal hydroxy and carboxyl groups, 50 wt. h. and 10 wt.h. respectively per 100 wt.h. PVC. The physico-chemical, technological and operational characteristics of plasticized PVC are determined. The tensile strength was 19.7 MРa, the elongation of PVC plastics was determined at a closing rate of 100 mm/min - 367%. The melt flow rate was determined on a plastometer (T=190 °C, P=98 Н): MFI = 64.5 g/10min. The thermal stability of the Congo red (185 °C) method was 209 min. The glass transition temperature was determined by the DMA method in the stretching mode and in the temperature range from minus 100 °C to plus 100 °C at a frequency of 1 Hz in a nitrogen atmosphere: -26.5 °C. An increase in the amount of polyester (20 wt.h.) leads to increased resistance to migration to polar and nonpolar environments, increased thermal stability – 211 min, MFI – 188 g/min.

Keywords: polyvinyl chloride, plasticizer, migration, рoly(ethylene glycerol sebacate), polyester, environmental friendliness
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