Design and Research of Eco-Friendly Polymer Composites

Lebedev, V.V.; Tykhomyrova, Tetiana; Litvinenko, I. F.; Avina, Svitlana; Saimbetova, Zhaniya

doi:10.4028/www.scientific.net/msf.1006.259

Cited by 19 publications

(14 citation statements)

References 18 publications

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“…Level of impact strength influence the possibility for forming various products of composite material. As we see, for new composite material impact strength is within the required value [10].…”

Section: Resultsmentioning

confidence: 60%

“…-extrusion PLA of the Terramac TP-4000 brand; -coffee grounds waste, gathered in 8 different coffee shops in Kharkiv and dried to moisture content 50% Coffee grounds waste have a polyfractional composition in the particle size limit from 0.5 to 1 mm. Using IR spectroscopy methods, it has been shown [10] 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.…”

Section: Methodsmentioning

confidence: 99%

“…We have previously studied [10] chemical, physical, mechanical and operational properties of new high-filler composite based on PLA. As shown, the highest performance indicators were characterized for compositions with a content of coffee grounds filler from 40% to 60% wt.…”

Section: Literature Data Analysis and Problem Statementmentioning

confidence: 99%

“…Coffee consumption in Ukraine is more than 15,000 tons per year and continues to grow on average by 5% per year [10]. Today, coffee is a popular raw material for making broad range of beverages, as well as the provision of various additional services in hotel and restaurant industry.…”

Section: Introductionmentioning

confidence: 99%

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Sorption characteristics studies of eco-friendly polymer composites

et al. 2021

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This paper presents the results of new composite materials based on polylactide and coffee grounds sorption characteristics study. New material, that include coffee grounds as additive material is cheaper than one of common polylactide. All types of dishes cam be made from new material and they also will be biodegradable, as made from polylactide. The sorption properties and characteristics were tested in different liquid medium. The last was chosen among the most wide spread mediums which are contact with dishes during its operational life. It was found, that optimal content of coffee grounds is 40 wt.% as for level of impact strength also for complex of sorption characteristics.

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Section: Resultsmentioning

confidence: 60%

Section: Methodsmentioning

confidence: 99%

Section: Literature Data Analysis and Problem Statementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sorption characteristics studies of eco-friendly polymer composites

et al. 2021

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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.…”

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confidence: 99%

Hybrid Eco-Friendly Biodegradable Construction Composites Modified With Humic Substances

Lebedev¹,

Miroshnichenko²,

Mysiak³

et al. 2022

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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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