An Innovative Method for the Recycling of Waste Carbohydrate-Based Flours
This work represents an innovative study that, for the first time, explores the possibility to use waste flours to produce thermoplastic polymeric bio-films. To the best of our knowledge, this is the first time that waste flours, derived from bakeries, pizzerias or pasta factories, have been propose...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/12/6/1414 |
| _version_ | 1797564232403779584 |
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| author | Carola Esposito Corcione Raffaella Striani Francesca Ferrari Paolo Visconti Daniela Rizzo Antonio Greco |
| author_facet | Carola Esposito Corcione Raffaella Striani Francesca Ferrari Paolo Visconti Daniela Rizzo Antonio Greco |
| author_sort | Carola Esposito Corcione |
| collection | DOAJ |
| description | This work represents an innovative study that, for the first time, explores the possibility to use waste flours to produce thermoplastic polymeric bio-films. To the best of our knowledge, this is the first time that waste flours, derived from bakeries, pizzerias or pasta factories, have been proposed for the production of bio-polymers, as a replacement of neat starch. To this aim, durum waste flour derived from a pasta factory, soft waste flour derived from pizzerias and neat maize starch used as control material were firstly analyzed from dimensional, morphological and chemical points of view. Afterwards, waste flour films were produced by the addition of a nature-based plasticizer, glycerol. Mechanical characterization of the plasticized thermoplastic films, produced by compression molding, evidenced low performances, even in the case of the neat maize starch. In order to improve the mechanical properties, the possibility to include polylactic acid and cardanol-based plasticizer was also investigated. Mass transport properties of all the produced bio-films were investigated by measuring their water vapor permeability and hygroscopic absorption. The durability properties of the bio-films were assessed by accelerated ageing tests, while the bio-degradability of the waste-based films was evaluated by measuring the solubility and the degradation in water. The physicochemical analyses of the novel bio-films evidenced good mechanical properties; specifically, the waste-based films showed a lower hygroscopic absorption and water solubility than those of the blends containing neat starch. |
| first_indexed | 2024-03-10T18:54:28Z |
| format | Article |
| id | doaj.art-9a0bc65e6be341a0ad0680c90cd67149 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T18:54:28Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-9a0bc65e6be341a0ad0680c90cd671492023-11-20T04:53:00ZengMDPI AGPolymers2073-43602020-06-01126141410.3390/polym12061414An Innovative Method for the Recycling of Waste Carbohydrate-Based FloursCarola Esposito Corcione0Raffaella Striani1Francesca Ferrari2Paolo Visconti3Daniela Rizzo4Antonio Greco5Department of Engineering for Innovation, University of Salento, 73100 Lecce, ItalyDepartment of Engineering for Innovation, University of Salento, 73100 Lecce, ItalyDepartment of Engineering for Innovation, University of Salento, 73100 Lecce, ItalyDepartment of Engineering for Innovation, University of Salento, 73100 Lecce, ItalyDepartment of Cultural Heritage, University of Salento, 73100 Lecce, ItalyDepartment of Engineering for Innovation, University of Salento, 73100 Lecce, ItalyThis work represents an innovative study that, for the first time, explores the possibility to use waste flours to produce thermoplastic polymeric bio-films. To the best of our knowledge, this is the first time that waste flours, derived from bakeries, pizzerias or pasta factories, have been proposed for the production of bio-polymers, as a replacement of neat starch. To this aim, durum waste flour derived from a pasta factory, soft waste flour derived from pizzerias and neat maize starch used as control material were firstly analyzed from dimensional, morphological and chemical points of view. Afterwards, waste flour films were produced by the addition of a nature-based plasticizer, glycerol. Mechanical characterization of the plasticized thermoplastic films, produced by compression molding, evidenced low performances, even in the case of the neat maize starch. In order to improve the mechanical properties, the possibility to include polylactic acid and cardanol-based plasticizer was also investigated. Mass transport properties of all the produced bio-films were investigated by measuring their water vapor permeability and hygroscopic absorption. The durability properties of the bio-films were assessed by accelerated ageing tests, while the bio-degradability of the waste-based films was evaluated by measuring the solubility and the degradation in water. The physicochemical analyses of the novel bio-films evidenced good mechanical properties; specifically, the waste-based films showed a lower hygroscopic absorption and water solubility than those of the blends containing neat starch.https://www.mdpi.com/2073-4360/12/6/1414thermoplastic bio-filmwaste flourmaize starchmass transport propertiesdurabilitysolubility in water |
| spellingShingle | Carola Esposito Corcione Raffaella Striani Francesca Ferrari Paolo Visconti Daniela Rizzo Antonio Greco An Innovative Method for the Recycling of Waste Carbohydrate-Based Flours Polymers thermoplastic bio-film waste flour maize starch mass transport properties durability solubility in water |
| title | An Innovative Method for the Recycling of Waste Carbohydrate-Based Flours |
| title_full | An Innovative Method for the Recycling of Waste Carbohydrate-Based Flours |
| title_fullStr | An Innovative Method for the Recycling of Waste Carbohydrate-Based Flours |
| title_full_unstemmed | An Innovative Method for the Recycling of Waste Carbohydrate-Based Flours |
| title_short | An Innovative Method for the Recycling of Waste Carbohydrate-Based Flours |
| title_sort | innovative method for the recycling of waste carbohydrate based flours |
| topic | thermoplastic bio-film waste flour maize starch mass transport properties durability solubility in water |
| url | https://www.mdpi.com/2073-4360/12/6/1414 |
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