Study of lignite humic acids hybrid modification technology of biodegradable films based on polyvinyl alcohol

Vladimir Lebedev (), Denis Miroshnichenko and Tetiana Tykhomyrova
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Vladimir Lebedev: National Technical University «Kharkiv Polytechnic Institute»
Denis Miroshnichenko: National Technical University «Kharkiv Polytechnic Institute»
Tetiana Tykhomyrova: National Technical University «Kharkiv Polytechnic Institute»

Technology audit and production reserves, 2023, vol. 2, issue 3(70), 10-13

Abstract: Object of article study is lignite humic acids hybrid modification technology of biodegradable films based on polyvinyl alcohol. The possibility of increasing the strength and operational properties of biodegradable polymeric materials based on polyvinyl alcohol by using its modification with the different types of humic acids from lignite is considered. Lignite humic acids hybrid modification films with antibacterial properties were obtained. The two-stage technology of lignite humic acids hybrid modification of biodegradable films based on polyvinyl alcohol was formalized. At the first stage of lignite humic acids hybrid modification technologies for hybrid-modified biodegradable materials production, lignite humic acids are received. At the second stage, hybrid modification of lignite humic acids (that are part of biodegradable polyvinyl alcohol films), which are received by watering from a solution, takes place. It has been conducted a study on determining the effect of lignite humic acids hybrid modification on the most important operational properties of biodegradable film based on polyvinyl alcohol, i. e., tensile strength, relative elongation at break and time of mold appearance. Changes in tensile strength, relative elongation at break and time of mold appearance for the lignite humic acids hybrid modified biodegradable polymeric materials based on polyvinyl alcohol were revealed depending on the content of the different types of lignite humic acids. It was also shown that the lignite humic acids hybrid modification of polyvinyl alcohol with the different types of humic acids allows preserving the biodegradability of the films along with imparting the antibacterial properties. The developed lignite humic acids hybrid modified biodegradable polyvinyl alcohol films with antibacterial properties, in terms of their operational characteristics, are superior to the known similar biodegradable films based on natural biopolymers.

Keywords: brown coal; humic acids; hybrid modification; polyvinyl alcohol; antibacterial properties; biodegradable films (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:baq:taprar:v:2:y:2023:i:3:p:10-13

DOI: 10.15587/2706-5448.2023.277980

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