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Dimonie D, Dragne M, Trica B, Nicolae CA, Raduly M, Doncea S, Ladaniuc M, Mustatea A, Miu F, Soare L, Georgescu T. New Biodegradable Materials for Re-Thought Packaging from Pre-Consumer Wastes by Controlling the Storage Time as Method to Increase the Mechanical Recycling Efficiency. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1503. [PMID: 36837139 PMCID: PMC9960796 DOI: 10.3390/ma16041503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
The influence of storage conditions on the mechanical recycling of pre-consumer waste (PRE-CW) from the manufacture of multilayer packaging films starting from starch compounds using a renewable-based polymer with PCL and PBAT, which are biodegradable conventional-based polyesters, was studied. It was found that, unlike materials based on conventional-origin polymers that accumulate in the environment for hundreds of years, the studied compounds degraded, even in the solid state, duringstorage in unventilated spaces and during the rainy hot summers with alternatingheat and rain. The degradation of the mechanically recycled compounds obtained from PRE-CW stored in such conditions was highlighted by the comparative analysis with the primary compounds, which proved the following: specific FTIR spectra changes; 2-3-times higher melt fluidity than for primary compounds; melting in successive processes over the entire positive temperatures range, up to 115 °C, such as in cases of compositional de-mixing of incompatible blends, faced to a single melting endotherm with a maximum at around 120 °C for the primar thermal degradation with the movement of the main destruction stages towards higher temperatures; a high quantity residue at 750 °C in air; dispersed mechanical resistance properties y compounds; crystallization at temperatures 10 °C-15 °C higher. The elimination of storage before the mechanical recycling of the pre-consumer waste from this type of polymeric compound fabrication is a way to increase the mechanical recycling efficiency while obtaining new materials with functional properties required by the applications.
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Affiliation(s)
- Doina Dimonie
- Chemical Engineering and Biotechnologies Faculty’ Doctoral School, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
- National Institute for Research and Development in Chemistry and Petrochemistry, 202 Splaiul Independentei Street, 060021 Bucharest, Romania
| | - Mihail Dragne
- Chemical Engineering and Biotechnologies Faculty’ Doctoral School, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
- National Institute for Research and Development in Chemistry and Petrochemistry, 202 Splaiul Independentei Street, 060021 Bucharest, Romania
- PROMATERIS SA, Bucharest-Targoviste Street, No.1, 070000 Buftea, Romania
| | - Bogdan Trica
- National Institute for Research and Development in Chemistry and Petrochemistry, 202 Splaiul Independentei Street, 060021 Bucharest, Romania
| | - Cristian-Andi Nicolae
- National Institute for Research and Development in Chemistry and Petrochemistry, 202 Splaiul Independentei Street, 060021 Bucharest, Romania
| | - Monica Raduly
- National Institute for Research and Development in Chemistry and Petrochemistry, 202 Splaiul Independentei Street, 060021 Bucharest, Romania
| | - Sanda Doncea
- National Institute for Research and Development in Chemistry and Petrochemistry, 202 Splaiul Independentei Street, 060021 Bucharest, Romania
| | - Magda Ladaniuc
- National Institute for Research and Development in Chemistry and Petrochemistry, 202 Splaiul Independentei Street, 060021 Bucharest, Romania
| | - Alina Mustatea
- Chemical Engineering and Biotechnologies Faculty’ Doctoral School, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania
- National Institute for Research and Development in Chemistry and Petrochemistry, 202 Splaiul Independentei Street, 060021 Bucharest, Romania
- PROMATERIS SA, Bucharest-Targoviste Street, No.1, 070000 Buftea, Romania
| | - Florentina Miu
- PROMATERIS SA, Bucharest-Targoviste Street, No.1, 070000 Buftea, Romania
| | - Laurentiu Soare
- PROMATERIS SA, Bucharest-Targoviste Street, No.1, 070000 Buftea, Romania
| | - Tudor Georgescu
- PROMATERIS SA, Bucharest-Targoviste Street, No.1, 070000 Buftea, Romania
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Starch Formates: Synthesis and Modification. Molecules 2021; 26:molecules26164882. [PMID: 34443470 PMCID: PMC8401097 DOI: 10.3390/molecules26164882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/10/2021] [Accepted: 08/11/2021] [Indexed: 11/17/2022] Open
Abstract
Starch can be efficiently converted into the corresponding formates homogeneously using N-formyl imidazole obtained by the reaction of 1,1′-carbonyldiimidazole and formic acid in dimethyl sulfoxide as a solvent. Starch formates are soluble in polar aprotic solvents, not susceptible against hydrolysis, and not meltable. Thermoplastics could be generated by conversion of starch formates with long-chain fatty acids exemplified by the conversion with lauroyl chloride in N,N-dimethylacetamide, leading to mixed starch laurate formates. The mixed esters show melting temperatures mainly dependent on the amount of laurate ester moieties.
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Visakh P. M.. Starch: State-of-the-Art, New Challenges and Opportunities. STARCH-BASED BLENDS, COMPOSITES AND NANOCOMPOSITES 2015. [DOI: 10.1039/9781782622796-00001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The chapter presents a brief account of various topics in starch-based blends, composites and nanocomposites, including structure–property relationships, preparation and characterization of starch nanocrystals, natural fibre-reinforced thermoplastic starch composites, applications of starch nanocrystal-based blends, composites and nanocomposites, chemically modified thermoplastic starches, outstanding features of starch-based hydrogel nanocomposites, fracture and failure of starch-based composites, application of starch-based nanocomposites in the food industry and effects of additives on the properties of starch.
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Affiliation(s)
- Visakh P. M.
- Tomsk Polytechnic University Lenin Av. 30 634050 Tomsk Russia
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Démé F, Peuvrel-Disdier E, Vergnes B. Rheology and morphology of polyester/thermoplastic flour blends. J Appl Polym Sci 2013. [DOI: 10.1002/app.40222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Florian Démé
- MINES ParisTech, CEMEF-Centre de Mise en Forme des Matériaux; Unité Mixte de Recherche Centre National de la Recherche Scientifique/Ecole des Mines 7635; CS 10207 06904 Sophia Antipolis Cedex France
- Laboratoire de Recherches et de Contrôle du Caoutchouc et des Plastiques, 60 Rue Auber, 94408 Vitry sur Seine Cedex, France
| | - Edith Peuvrel-Disdier
- MINES ParisTech, CEMEF-Centre de Mise en Forme des Matériaux; Unité Mixte de Recherche Centre National de la Recherche Scientifique/Ecole des Mines 7635; CS 10207 06904 Sophia Antipolis Cedex France
| | - Bruno Vergnes
- MINES ParisTech, CEMEF-Centre de Mise en Forme des Matériaux; Unité Mixte de Recherche Centre National de la Recherche Scientifique/Ecole des Mines 7635; CS 10207 06904 Sophia Antipolis Cedex France
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Yu L, Liu X, Petinakis E, Dean K, Bateman S. Starch Based Blends, Composites and Nanocomposites. ADVANCES IN NATURAL POLYMERS 2013. [DOI: 10.1007/978-3-642-20940-6_4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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