Morphology of import additives used in obtaining oxobio-degradable polyolefins

Abstract

The quantitative and qualitative analysis of the import additives d2W (England) and Tosaf group corporation (Israel) in the form of composite materials containing prooxidants was carried out on a S8 Tiger X-ray fluorescence spectrometer. Analysis of the elemental composition of additives used in the production of biodegradable polymers showed a different approach to foreign manufacturers, both in composition and in difference of the polymer basis. It is determined that the catalytic ability of both the additive d2W and the additive Tosaf is characterized by the presence of a wide range of elements in the form of metals, including variable valence, while the presence of a limited number of nonmetallic elements is noted. Additive d2W contains the following active elements,% (by mass): manganese – 0.16; strontium – 0.014; iron – 0.01; calcium – 17.15; magnesium – 0.13. The significant content of calcium d2W in the catalyst (17.15%), probably in the form of oxide, provides a significant developed surface of the additive. Additives Tosaf lot No. 1 as a whole contains the following active elements,% (by mass): cobalt – 1.18; Zinc 0.6 and iron 0.024, with a small amount of iron, potassium, calcium, chlorine, phosphorus, silicon, zinc and copper. A slightly different elemental composition in batch No. 2 for the content of cobalt is 1.07% (by weight) and iron – 0.033% (wt.) The variety of a wide range of elements that are characterized by different acid-base and other physicochemical properties, That secondary raw materials were used to produce the corresponding prooxidants. It should be noted that, as a polymeric matrix of metal carboxylate additives, polyolefins are presumably used to better combine and distribute the prooxidants when the synthetic polymer is modified.