Sorption Resistance Studying of Environmentally Friendly Polymeric Materials in Different Liquid Mediums

Lebedev, V.V.; Tykhomyrova, Tetiana; Филенко, Олеся Николаевна; Cherkashina, Аnna; Lytvynenko, Oleksandr

doi:10.4028/www.scientific.net/msf.1038.168

Cited by 12 publications

(7 citation statements)

References 10 publications

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“…In our previous works [9][10][11], it was established that the high efficiency of processes of obtaining eco-friendly biodegradable polymer composite materials based on PLA and coffee grounds wastes, which are characterized by sufficiently high strength characteristics and long-term stability of operational indicators. Very relevant are further studies on the development and research of hybrid eco-friendly biodegradable polymeric materials based on PLA in its functional modification of HS, which are in the works of research as structuring agents in different types of biopolymers [12,13].…”

Section: Unresolved Issuesmentioning

confidence: 99%

Investigation of Hybrid Modification of Eco-Friendly Polymers by Humic Substances

Лебедев

Мірошниченко

Bilets

et al. 2022

SSP

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Research on investigation of hybrid eco-friendly polymers modificated by humic substances are given in this article. The purpose of the research is to investigate a hybrid modification of eco-friendly polymers of polylactic acid by humic substances, it was found that the mechanism of hybrid modification in the matrix synthesis of the polylactic acid-humic substances system indicates an intermolecular bond between polylactic acid and humic substances, at the same time, due to increased crystallization and the emergence of intermolecular and ester bonds in the formation of more rigid mesh structure in the system polylactic acid-humic substances is increasing the mechanical properties of such materials. It was found that the increase in the impact strength and the breaking stress during bending in the polylactic acid-humic substances system in the hybrid modification occurs, while the optimal content of humic substances in the polylactic acid-humic substances systems is 0.5 % by mass.

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Section: Unresolved Issuesmentioning

confidence: 99%

Investigation of Hybrid Modification of Eco-Friendly Polymers by Humic Substances

Лебедев

Мірошниченко

Bilets

et al. 2022

SSP

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“…8,9 Currently, a wide range of biodegradable packaging films for food and other products are obtained from these materials. [10][11][12][13] Nevertheless, packaging biodegradable films with antibacterial properties for long-term storage of food are still not so common due to their rather low operational characteristics. 14,15 To this end, preparation of biodegradable films with antibacterial properties for food packaging is still of great interest.…”

Section: Introductionmentioning

confidence: 99%

Study of Hybrid Humic Acids Modification of Environmentally Safe Biodegradable Films Based on Hydroxypropyl Methyl Cellulose

Lebedev¹,

Мірошниченко²,

Pyshyev³

et al. 2023

ChChT

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The possibility of increasing the strength and operational properties of ecologically safe biodegradable polymeric materials based on hydroxypropyl methyl cellulose by using its modification with the different types of humic acids (HAs) from lignite is considered. Hybrid ecologically safe high-strength films with antibacterial properties were obtained for the first time. Physicochemical studies and IR spectroscopy confirmed the development of hybrid structures of hydroxypropyl methyl cellulose, modified with the different types of HAs. Changes in water absorption, tensile strength, relative elongation at break, and time of mold appearance for the environmentally safe biodegradable polymeric materials based on hydroxypropyl methyl cellulose were revealed depending on the content of the different types of humic acids. It was also shown that the hybrid modification of hydroxypropyl methyl cellulose with the different types of HAs allows preserving the biodegradability of the films along with imparting the antibacterial properties. The developed ecologically safe biodegradable films with antibacterial properties based on hydroxypropyl methyl cellulose and HAs, in terms of their operational characteristics, are superior to the known similar biodegradable films based on natural biopolymers.

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“…In our previous works [10][11][12], it was established that the high efficiency of the processes of obtaining eco-friendly biodegradable polymer composite materials based on polylactide and coffee grounds wastes, which are characterized by sufficiently high strength characteristics and resistance to many aggressive environments.…”

mentioning

confidence: 99%

“…Coffee grounds waste have poly fractional composition in the particle size limit from 0.5 mm to 1 mm. Using IR spectroscopy methods, it has been shown [10,11] that coffee grounds, in their chemical composition, are characterized by up to 6 % or more content of caffeine, alkaloids and their companions, up to 1 % of chlorogenic acids and their derivatives content. The general performance of the peak in the absorption length range from 2900 cm -1 to 1800 cm -1 indicates the presence of water in the samples.…”

mentioning

confidence: 99%

“…2) also indicates the processability of hybrid eco-friendly biodegradable structural composites based on polylactide, coffee grounds and humic substances. Thus it becomes obvious that coffee grounds are evenly distributed in the hybrid matrix of polylactide-humic substances [11]. At the same time, it even slightly "softens" the original rather rigid polylactide.…”

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confidence: 99%

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Hybrid Eco-Friendly Biodegradable Construction Composites Modified With Humic Substances

Lebedev¹,

Miroshnichenko²,

Mysiak³

et al. 2022

BOSACEA

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Obtaining hybrid eco-friendly biodegradable structural composites was considered. The aim of this work was to determining the properties of hybrid eco-friendly biodegradable construction composites modified with humic substances. Hybrid eco-friendly construction composites were obtained on the basis of bioplastic polylactides with the addition as a filler of coffee grounds with a polyfractional composition within a particle size of 0.5 mm to 1 mm and a hybrid modifier – humic substances from brown coal. Hybrid ecofriendly construction composites were obtained by extrusion of pre-prepared raw materials in a single-screw laboratory extruder at a temperature of 170–200 °С and an auger rotation speed of 30–100 rpm. Investigated impact strength, breaking stress during bending, melt flow index (MFI) and melting temperature of hybrid ecofriendly biodegradable structural composites modified with humic substances. Optimization studies have been carried out to determine the most effective composition of new ecofriendly structural composites based on bioplastics of polylactides, coffee grounds waste and humic substances of three different types. Researching data together with the data of impact strength, allows us to make assumptions about the possibility of forming a variety of products from structurally composite material, herewith a composition with a coffee content of 50 % by mass. deserves a special attention. The data show an increase the impact strength and the breaking stress during bending a hybrid modification of ecofriendly biodegradable construction composites based on polylactide, coffee grounds waste and humic substances in 2.5 times, with optimal in terms of strength characteristics is the content of coffee grounds at 50 % wt. and 0.5 % by mass humic substances with the highest content of volatile substances and the lowest content of carbon. For such hybrid ecofriendly biodegradable construction composites based on polylactide, coffee grounds waste and humic substances, the MFI is characterized by 3.1 g/10 min. and the processing temperature range is 182–188 °C. It is shown, that the designed hybrid eco-friendly biodegradable structural composites modified with humic substances can be used in the production of high-strength structures and elements for engineering purposes.

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Sorption Resistance Studying of Environmentally Friendly Polymeric Materials in Different Liquid Mediums

Cited by 12 publications

References 10 publications

Investigation of Hybrid Modification of Eco-Friendly Polymers by Humic Substances

Investigation of Hybrid Modification of Eco-Friendly Polymers by Humic Substances

Study of Hybrid Humic Acids Modification of Environmentally Safe Biodegradable Films Based on Hydroxypropyl Methyl Cellulose

Hybrid Eco-Friendly Biodegradable Construction Composites Modified With Humic Substances

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