Poly(lactic acid)/Poly(3-hydroxybutyrate) Biocomposites with Differently Treated Cellulose Fibers
The growing concern about environmental pollution has generated an increased demand for biobased and biodegradable materials intended particularly for the packaging sector. Thus, this study focuses on the effect of two different cellulosic reinforcements and plasticized poly(3-hydroxybutyrate) (PHB)...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/8/2390 |
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| author | Adriana Nicoleta Frone Marius Ghiurea Cristian Andi Nicolae Augusta Raluca Gabor Stefania Badila Denis Mihaela Panaitescu |
| author_facet | Adriana Nicoleta Frone Marius Ghiurea Cristian Andi Nicolae Augusta Raluca Gabor Stefania Badila Denis Mihaela Panaitescu |
| author_sort | Adriana Nicoleta Frone |
| collection | DOAJ |
| description | The growing concern about environmental pollution has generated an increased demand for biobased and biodegradable materials intended particularly for the packaging sector. Thus, this study focuses on the effect of two different cellulosic reinforcements and plasticized poly(3-hydroxybutyrate) (PHB) on the properties of poly(lactic acid) (PLA). The cellulose fibers containing lignin (CFw) were isolated from wood waste by mechanical treatment, while the ones without lignin (CF) were obtained from pure cellulose by acid hydrolysis. The biocomposites were prepared by means of a melt compounding-masterbatch technique for the better dispersion of additives. The effect of the presence or absence of lignin and of the size of the cellulosic fibers on the properties of PLA and PLA/PHB was emphasized by using in situ X-ray diffraction, polarized optical microscopy, atomic force microscopy, and mechanical and thermal analyses. An improvement of the mechanical properties of PLA and PLA/PHB was achieved in the presence of CF fibers due to their smaller size, while CFw fibers promoted an increased thermal stability of PLA/PHB, owing to the presence of lignin. The overall thermal and mechanical results show the great potential of using cheap cellulose fibers from wood waste to obtain PLA/PHB-based materials for packaging applications as an alternative to using fossil based materials. In addition, in situ X-ray diffraction analysis over a large temperature range has proven to be a useful technique to better understand changes in the crystal structure of complex biomaterials. |
| first_indexed | 2024-03-09T13:15:04Z |
| format | Article |
| id | doaj.art-faf0fdedd6e14fe4924344fc10e09797 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T13:15:04Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-faf0fdedd6e14fe4924344fc10e097972023-11-30T21:37:10ZengMDPI AGMolecules1420-30492022-04-01278239010.3390/molecules27082390Poly(lactic acid)/Poly(3-hydroxybutyrate) Biocomposites with Differently Treated Cellulose FibersAdriana Nicoleta Frone0Marius Ghiurea1Cristian Andi Nicolae2Augusta Raluca Gabor3Stefania Badila4Denis Mihaela Panaitescu5National Institute for Research & Development in Chemistry and Petrochemistry–ICECHIM, 202 Splaiul Independentei, 060021 Bucharest, RomaniaNational Institute for Research & Development in Chemistry and Petrochemistry–ICECHIM, 202 Splaiul Independentei, 060021 Bucharest, RomaniaNational Institute for Research & Development in Chemistry and Petrochemistry–ICECHIM, 202 Splaiul Independentei, 060021 Bucharest, RomaniaNational Institute for Research & Development in Chemistry and Petrochemistry–ICECHIM, 202 Splaiul Independentei, 060021 Bucharest, RomaniaNational Institute for Research & Development in Chemistry and Petrochemistry–ICECHIM, 202 Splaiul Independentei, 060021 Bucharest, RomaniaNational Institute for Research & Development in Chemistry and Petrochemistry–ICECHIM, 202 Splaiul Independentei, 060021 Bucharest, RomaniaThe growing concern about environmental pollution has generated an increased demand for biobased and biodegradable materials intended particularly for the packaging sector. Thus, this study focuses on the effect of two different cellulosic reinforcements and plasticized poly(3-hydroxybutyrate) (PHB) on the properties of poly(lactic acid) (PLA). The cellulose fibers containing lignin (CFw) were isolated from wood waste by mechanical treatment, while the ones without lignin (CF) were obtained from pure cellulose by acid hydrolysis. The biocomposites were prepared by means of a melt compounding-masterbatch technique for the better dispersion of additives. The effect of the presence or absence of lignin and of the size of the cellulosic fibers on the properties of PLA and PLA/PHB was emphasized by using in situ X-ray diffraction, polarized optical microscopy, atomic force microscopy, and mechanical and thermal analyses. An improvement of the mechanical properties of PLA and PLA/PHB was achieved in the presence of CF fibers due to their smaller size, while CFw fibers promoted an increased thermal stability of PLA/PHB, owing to the presence of lignin. The overall thermal and mechanical results show the great potential of using cheap cellulose fibers from wood waste to obtain PLA/PHB-based materials for packaging applications as an alternative to using fossil based materials. In addition, in situ X-ray diffraction analysis over a large temperature range has proven to be a useful technique to better understand changes in the crystal structure of complex biomaterials.https://www.mdpi.com/1420-3049/27/8/2390biocompositePLA/PHB blendcellulose fibershigh-temperature XRD |
| spellingShingle | Adriana Nicoleta Frone Marius Ghiurea Cristian Andi Nicolae Augusta Raluca Gabor Stefania Badila Denis Mihaela Panaitescu Poly(lactic acid)/Poly(3-hydroxybutyrate) Biocomposites with Differently Treated Cellulose Fibers Molecules biocomposite PLA/PHB blend cellulose fibers high-temperature XRD |
| title | Poly(lactic acid)/Poly(3-hydroxybutyrate) Biocomposites with Differently Treated Cellulose Fibers |
| title_full | Poly(lactic acid)/Poly(3-hydroxybutyrate) Biocomposites with Differently Treated Cellulose Fibers |
| title_fullStr | Poly(lactic acid)/Poly(3-hydroxybutyrate) Biocomposites with Differently Treated Cellulose Fibers |
| title_full_unstemmed | Poly(lactic acid)/Poly(3-hydroxybutyrate) Biocomposites with Differently Treated Cellulose Fibers |
| title_short | Poly(lactic acid)/Poly(3-hydroxybutyrate) Biocomposites with Differently Treated Cellulose Fibers |
| title_sort | poly lactic acid poly 3 hydroxybutyrate biocomposites with differently treated cellulose fibers |
| topic | biocomposite PLA/PHB blend cellulose fibers high-temperature XRD |
| url | https://www.mdpi.com/1420-3049/27/8/2390 |
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