Thermal and Mechanical Properties of Biocomposites Made of Poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate) and Potato Pulp Powder
The thermal and mechanical properties of biocomposites of poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate) (PHBV) containing 5 wt % of valerate units, with 20 wt % of potato pulp powder were investigated in order (<i>i</i>) to obtain information on possible miscibility/com...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-02-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/11/2/308 |
| _version_ | 1811269802572906496 |
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| author | Maria Cristina Righetti Patrizia Cinelli Norma Mallegni Andreas Stäbler Andrea Lazzeri |
| author_facet | Maria Cristina Righetti Patrizia Cinelli Norma Mallegni Andreas Stäbler Andrea Lazzeri |
| author_sort | Maria Cristina Righetti |
| collection | DOAJ |
| description | The thermal and mechanical properties of biocomposites of poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate) (PHBV) containing 5 wt % of valerate units, with 20 wt % of potato pulp powder were investigated in order (<i>i</i>) to obtain information on possible miscibility/compatibility between the biopolymers and the potato pulp, and (<i>ii</i>) to quantify how the addition of this filler modifies the properties of the polymeric material. The potato pulp powder utilized is a residue of processing for the production and extraction of starch. The final aim of this study is the preparation of PHBV based materials with reduced cost, thanks to biomass valorization, in agreement with the circular economy policy, as result of the incorporation of agricultural organic waste. The results showed that the potato pulp powder does not act as reinforcement, but rather as filler for the PHBV polymeric matrix. A moderate loss in mechanical properties is detected (decrease in elastic modulus, tensile strength and elongation at break), which regardless still meets the technical requirements indicated for rigid packaging production. In order to improve the mechanical response of the PHBV/potato pulp powder biocomposites, surface treatment of the potato pulp powder with bio-based and petroleum-based waxes was investigated. Good enhancement of the mechanical properties was achieved with the natural carnauba and bee waxes. |
| first_indexed | 2024-04-12T21:48:35Z |
| format | Article |
| id | doaj.art-4ca73372a5fc4e5b96c2647b5d6a5787 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-04-12T21:48:35Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-4ca73372a5fc4e5b96c2647b5d6a57872022-12-22T03:15:33ZengMDPI AGPolymers2073-43602019-02-0111230810.3390/polym11020308polym11020308Thermal and Mechanical Properties of Biocomposites Made of Poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate) and Potato Pulp PowderMaria Cristina Righetti0Patrizia Cinelli1Norma Mallegni2Andreas Stäbler3Andrea Lazzeri4CNR-IPCF, National Research Council—Institute for Chemical and Physical Processes, Via Moruzzi 1, 56124 Pisa, ItalyCNR-IPCF, National Research Council—Institute for Chemical and Physical Processes, Via Moruzzi 1, 56124 Pisa, ItalyCNR-IPCF, National Research Council—Institute for Chemical and Physical Processes, Via Moruzzi 1, 56124 Pisa, ItalyFraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Straße, 35, 85354 Freising, GermanyCNR-IPCF, National Research Council—Institute for Chemical and Physical Processes, Via Moruzzi 1, 56124 Pisa, ItalyThe thermal and mechanical properties of biocomposites of poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate) (PHBV) containing 5 wt % of valerate units, with 20 wt % of potato pulp powder were investigated in order (<i>i</i>) to obtain information on possible miscibility/compatibility between the biopolymers and the potato pulp, and (<i>ii</i>) to quantify how the addition of this filler modifies the properties of the polymeric material. The potato pulp powder utilized is a residue of processing for the production and extraction of starch. The final aim of this study is the preparation of PHBV based materials with reduced cost, thanks to biomass valorization, in agreement with the circular economy policy, as result of the incorporation of agricultural organic waste. The results showed that the potato pulp powder does not act as reinforcement, but rather as filler for the PHBV polymeric matrix. A moderate loss in mechanical properties is detected (decrease in elastic modulus, tensile strength and elongation at break), which regardless still meets the technical requirements indicated for rigid packaging production. In order to improve the mechanical response of the PHBV/potato pulp powder biocomposites, surface treatment of the potato pulp powder with bio-based and petroleum-based waxes was investigated. Good enhancement of the mechanical properties was achieved with the natural carnauba and bee waxes.https://www.mdpi.com/2073-4360/11/2/308bio-based polymersnatural fibersbiomassbiocompositesfiber/matrix adhesion |
| spellingShingle | Maria Cristina Righetti Patrizia Cinelli Norma Mallegni Andreas Stäbler Andrea Lazzeri Thermal and Mechanical Properties of Biocomposites Made of Poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate) and Potato Pulp Powder Polymers bio-based polymers natural fibers biomass biocomposites fiber/matrix adhesion |
| title | Thermal and Mechanical Properties of Biocomposites Made of Poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate) and Potato Pulp Powder |
| title_full | Thermal and Mechanical Properties of Biocomposites Made of Poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate) and Potato Pulp Powder |
| title_fullStr | Thermal and Mechanical Properties of Biocomposites Made of Poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate) and Potato Pulp Powder |
| title_full_unstemmed | Thermal and Mechanical Properties of Biocomposites Made of Poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate) and Potato Pulp Powder |
| title_short | Thermal and Mechanical Properties of Biocomposites Made of Poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate) and Potato Pulp Powder |
| title_sort | thermal and mechanical properties of biocomposites made of poly 3 hydroxybutyrate i co i 3 hydroxyvalerate and potato pulp powder |
| topic | bio-based polymers natural fibers biomass biocomposites fiber/matrix adhesion |
| url | https://www.mdpi.com/2073-4360/11/2/308 |
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