Hemicellulose Films from Curaua Fibers (<i>Ananas erectifolius</i>): Extraction and Thermal and Mechanical Characterization
With growing environmental concerns over synthetic polymers, natural polymeric materials, such as hemicellulose, are considered a good sustainable alternative. Curaua fibers could be an excellent source of biopolymer as they have a relatively high hemicellulose content (15 wt%) and only a small amou...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/15/2999 |
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| author | Mariana Roldi-Oliveira Layse M. Diniz Anastasia L. Elias Sandra M. Luz |
| author_facet | Mariana Roldi-Oliveira Layse M. Diniz Anastasia L. Elias Sandra M. Luz |
| author_sort | Mariana Roldi-Oliveira |
| collection | DOAJ |
| description | With growing environmental concerns over synthetic polymers, natural polymeric materials, such as hemicellulose, are considered a good sustainable alternative. Curaua fibers could be an excellent source of biopolymer as they have a relatively high hemicellulose content (15 wt%) and only a small amount of lignin (7 wt%). In this work, hemicellulose was extracted by an alkaline medium using KOH and the influence of the alkali concentration, temperature, and time was studied. A hemicellulose film was produced by water casting and its mechanical, thermal, and morphological properties were characterized. The results show that the best method, which resulted in the highest hemicellulose yield and lowest contamination from lignin, was using 10% (<i>w</i>/<i>v</i>) KOH concentration, 25 °C, and time of 3 h. The hemicellulose film exhibited better thermal stability and elongation at break than other polymeric films. It also exhibited lower rigidity and higher flexibility than other biodegradable polymers, including polylactic acid (PLA) and polyhydroxybutyrate (PHB). |
| first_indexed | 2024-03-09T05:04:50Z |
| format | Article |
| id | doaj.art-3115b4a6b93a47539a6b4347c9cbd8ba |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T05:04:50Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-3115b4a6b93a47539a6b4347c9cbd8ba2023-12-03T12:55:58ZengMDPI AGPolymers2073-43602022-07-011415299910.3390/polym14152999Hemicellulose Films from Curaua Fibers (<i>Ananas erectifolius</i>): Extraction and Thermal and Mechanical CharacterizationMariana Roldi-Oliveira0Layse M. Diniz1Anastasia L. Elias2Sandra M. Luz3Mechanical Department, Technology Faculty, University of Brasília, Brasília 70910-900, BrazilMechanical Department, Technology Faculty, University of Brasília, Brasília 70910-900, BrazilDepartment of Chemical and Materials Engineering, University of Alberta, Donadeo Innovation Centre for Engineering, Edmonton, AB T6G 1H9, CanadaMechanical Department, Technology Faculty, University of Brasília, Brasília 70910-900, BrazilWith growing environmental concerns over synthetic polymers, natural polymeric materials, such as hemicellulose, are considered a good sustainable alternative. Curaua fibers could be an excellent source of biopolymer as they have a relatively high hemicellulose content (15 wt%) and only a small amount of lignin (7 wt%). In this work, hemicellulose was extracted by an alkaline medium using KOH and the influence of the alkali concentration, temperature, and time was studied. A hemicellulose film was produced by water casting and its mechanical, thermal, and morphological properties were characterized. The results show that the best method, which resulted in the highest hemicellulose yield and lowest contamination from lignin, was using 10% (<i>w</i>/<i>v</i>) KOH concentration, 25 °C, and time of 3 h. The hemicellulose film exhibited better thermal stability and elongation at break than other polymeric films. It also exhibited lower rigidity and higher flexibility than other biodegradable polymers, including polylactic acid (PLA) and polyhydroxybutyrate (PHB).https://www.mdpi.com/2073-4360/14/15/2999hemicellulosecuraua fibersexperimental designthermal characterization |
| spellingShingle | Mariana Roldi-Oliveira Layse M. Diniz Anastasia L. Elias Sandra M. Luz Hemicellulose Films from Curaua Fibers (<i>Ananas erectifolius</i>): Extraction and Thermal and Mechanical Characterization Polymers hemicellulose curaua fibers experimental design thermal characterization |
| title | Hemicellulose Films from Curaua Fibers (<i>Ananas erectifolius</i>): Extraction and Thermal and Mechanical Characterization |
| title_full | Hemicellulose Films from Curaua Fibers (<i>Ananas erectifolius</i>): Extraction and Thermal and Mechanical Characterization |
| title_fullStr | Hemicellulose Films from Curaua Fibers (<i>Ananas erectifolius</i>): Extraction and Thermal and Mechanical Characterization |
| title_full_unstemmed | Hemicellulose Films from Curaua Fibers (<i>Ananas erectifolius</i>): Extraction and Thermal and Mechanical Characterization |
| title_short | Hemicellulose Films from Curaua Fibers (<i>Ananas erectifolius</i>): Extraction and Thermal and Mechanical Characterization |
| title_sort | hemicellulose films from curaua fibers i ananas erectifolius i extraction and thermal and mechanical characterization |
| topic | hemicellulose curaua fibers experimental design thermal characterization |
| url | https://www.mdpi.com/2073-4360/14/15/2999 |
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