Effect of Psyllium Husk Addition on the Structural and Physical Properties of Biodegradable Thermoplastic Starch Film
The research subject was the analysis of the microstructure, barrier properties, and mechanical resistance of the psyllium husk (PH)-modified thermoplastic starch films. The tensile tests under various static loading conditions were not performed by researchers for this type of material before and a...
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MDPI AG
2022-06-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/13/4459 |
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| author | Karolina Beer-Lech Anna Skic Kamil Skic Zbigniew Stropek Marta Arczewska |
| author_facet | Karolina Beer-Lech Anna Skic Kamil Skic Zbigniew Stropek Marta Arczewska |
| author_sort | Karolina Beer-Lech |
| collection | DOAJ |
| description | The research subject was the analysis of the microstructure, barrier properties, and mechanical resistance of the psyllium husk (PH)-modified thermoplastic starch films. The tensile tests under various static loading conditions were not performed by researchers for this type of material before and are essential for a more precise assessment of the material’s behavior under the conditions of its subsequent use. The film samples were manufactured by the casting method. PH addition improved starch gelatinization and caused a decrease in failure strain by 86% and an increase in failure stress by 48% compared to pure films. Fourier transform infrared spectroscopy results showed the formation of additional hydrogen bonds between polysaccharides in starch and PH. An increase in the number of hydrophilic groups in the modified films resulted in a faster contact angle decrease (27.4% compared to 12.8% for pure ones within the first 5 s); however, it increased the energy of water binding and surface complexity. The modified films showed the opacity at 600 nm, 43% higher than in the pure starch film, and lower transmittance, suggesting effectively improving barrier properties to UV light, a potent lipid-oxidizing agent in food systems. |
| first_indexed | 2024-03-09T12:49:21Z |
| format | Article |
| id | doaj.art-ba32dcaec2c44bd0906dca063fa48d9a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T12:49:21Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-ba32dcaec2c44bd0906dca063fa48d9a2023-11-30T22:08:54ZengMDPI AGMaterials1996-19442022-06-011513445910.3390/ma15134459Effect of Psyllium Husk Addition on the Structural and Physical Properties of Biodegradable Thermoplastic Starch FilmKarolina Beer-Lech0Anna Skic1Kamil Skic2Zbigniew Stropek3Marta Arczewska4Department of Mechanical Engineering and Automatic Control, University of Life Sciences in Lublin, 28 Głęboka St., 20-612 Lublin, PolandDepartment of Mechanical Engineering and Automatic Control, University of Life Sciences in Lublin, 28 Głęboka St., 20-612 Lublin, PolandInstitute of Agrophysics, Polish Academy of Sciences, 4 Doświadczalna St., 20-290 Lublin, PolandDepartment of Mechanical Engineering and Automatic Control, University of Life Sciences in Lublin, 28 Głęboka St., 20-612 Lublin, PolandDepartment of Biophysics, Faculty of Environmental Biology, University of Life Sciences in Lublin, 13 Akademicka St., 20-950 Lublin, PolandThe research subject was the analysis of the microstructure, barrier properties, and mechanical resistance of the psyllium husk (PH)-modified thermoplastic starch films. The tensile tests under various static loading conditions were not performed by researchers for this type of material before and are essential for a more precise assessment of the material’s behavior under the conditions of its subsequent use. The film samples were manufactured by the casting method. PH addition improved starch gelatinization and caused a decrease in failure strain by 86% and an increase in failure stress by 48% compared to pure films. Fourier transform infrared spectroscopy results showed the formation of additional hydrogen bonds between polysaccharides in starch and PH. An increase in the number of hydrophilic groups in the modified films resulted in a faster contact angle decrease (27.4% compared to 12.8% for pure ones within the first 5 s); however, it increased the energy of water binding and surface complexity. The modified films showed the opacity at 600 nm, 43% higher than in the pure starch film, and lower transmittance, suggesting effectively improving barrier properties to UV light, a potent lipid-oxidizing agent in food systems.https://www.mdpi.com/1996-1944/15/13/4459biocompositesthermoplastic starch filmpsyllium huskmicrostructuremechanical propertiesbarrier properties |
| spellingShingle | Karolina Beer-Lech Anna Skic Kamil Skic Zbigniew Stropek Marta Arczewska Effect of Psyllium Husk Addition on the Structural and Physical Properties of Biodegradable Thermoplastic Starch Film Materials biocomposites thermoplastic starch film psyllium husk microstructure mechanical properties barrier properties |
| title | Effect of Psyllium Husk Addition on the Structural and Physical Properties of Biodegradable Thermoplastic Starch Film |
| title_full | Effect of Psyllium Husk Addition on the Structural and Physical Properties of Biodegradable Thermoplastic Starch Film |
| title_fullStr | Effect of Psyllium Husk Addition on the Structural and Physical Properties of Biodegradable Thermoplastic Starch Film |
| title_full_unstemmed | Effect of Psyllium Husk Addition on the Structural and Physical Properties of Biodegradable Thermoplastic Starch Film |
| title_short | Effect of Psyllium Husk Addition on the Structural and Physical Properties of Biodegradable Thermoplastic Starch Film |
| title_sort | effect of psyllium husk addition on the structural and physical properties of biodegradable thermoplastic starch film |
| topic | biocomposites thermoplastic starch film psyllium husk microstructure mechanical properties barrier properties |
| url | https://www.mdpi.com/1996-1944/15/13/4459 |
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