Controlling the properties of thermoplastic starch films with hydrogen bonding plasticizers
Four deep eutectic solvents were used to produce plasticized thermoplastic starch films by a solution casting method. The mechanical properties of thin films, the stability of these properties over time, and the effects of humidity were investigated with the quartz crystal microbalance. The crystall...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Carbohydrate Polymer Technologies and Applications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666893923000129 |
| _version_ | 1827923249783111680 |
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| author | YuLing Chen Kenneth R. Shull |
| author_facet | YuLing Chen Kenneth R. Shull |
| author_sort | YuLing Chen |
| collection | DOAJ |
| description | Four deep eutectic solvents were used to produce plasticized thermoplastic starch films by a solution casting method. The mechanical properties of thin films, the stability of these properties over time, and the effects of humidity were investigated with the quartz crystal microbalance. The crystallinity, glass transition temperature, modulus and elongation at break for thicker films was measured using a combination of x-ray diffraction, differential scanning calorimetry and tensile testing. The films had very low glass transition temperatures (-50 ∘C or lower), with mechanical properties determined by the crystallinity of the films. The crystallinity did not change significantly over a period of one week, giving materials with a stable mechanical response. Deep eutectic solvents containing ammonium acetate, glycerol, and urea produced films with a crystalline structure that was much more stable at high humidity values than films plasticized only with glycerol or a traditional ionic liquid. These effects are attributed to the complex hydrogen bonding interactions between the different components of the deep eutectic solvents, and between these components and the starch polymer. |
| first_indexed | 2024-03-13T04:55:05Z |
| format | Article |
| id | doaj.art-ef5ec9bf70ae45aeb29db0e50327ce16 |
| institution | Directory Open Access Journal |
| issn | 2666-8939 |
| language | English |
| last_indexed | 2024-03-13T04:55:05Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbohydrate Polymer Technologies and Applications |
| spelling | doaj.art-ef5ec9bf70ae45aeb29db0e50327ce162023-06-18T05:03:43ZengElsevierCarbohydrate Polymer Technologies and Applications2666-89392023-06-015100291Controlling the properties of thermoplastic starch films with hydrogen bonding plasticizersYuLing Chen0Kenneth R. Shull1Department of Materials Science & Engineering, Northwestern University, Evanston, Illinois, 60208, USACorresponding author.; Department of Materials Science & Engineering, Northwestern University, Evanston, Illinois, 60208, USAFour deep eutectic solvents were used to produce plasticized thermoplastic starch films by a solution casting method. The mechanical properties of thin films, the stability of these properties over time, and the effects of humidity were investigated with the quartz crystal microbalance. The crystallinity, glass transition temperature, modulus and elongation at break for thicker films was measured using a combination of x-ray diffraction, differential scanning calorimetry and tensile testing. The films had very low glass transition temperatures (-50 ∘C or lower), with mechanical properties determined by the crystallinity of the films. The crystallinity did not change significantly over a period of one week, giving materials with a stable mechanical response. Deep eutectic solvents containing ammonium acetate, glycerol, and urea produced films with a crystalline structure that was much more stable at high humidity values than films plasticized only with glycerol or a traditional ionic liquid. These effects are attributed to the complex hydrogen bonding interactions between the different components of the deep eutectic solvents, and between these components and the starch polymer.http://www.sciencedirect.com/science/article/pii/S2666893923000129Thermoplastic starchPlasticizationCrystallinityHumidityDeep eutectic solventsStability |
| spellingShingle | YuLing Chen Kenneth R. Shull Controlling the properties of thermoplastic starch films with hydrogen bonding plasticizers Carbohydrate Polymer Technologies and Applications Thermoplastic starch Plasticization Crystallinity Humidity Deep eutectic solvents Stability |
| title | Controlling the properties of thermoplastic starch films with hydrogen bonding plasticizers |
| title_full | Controlling the properties of thermoplastic starch films with hydrogen bonding plasticizers |
| title_fullStr | Controlling the properties of thermoplastic starch films with hydrogen bonding plasticizers |
| title_full_unstemmed | Controlling the properties of thermoplastic starch films with hydrogen bonding plasticizers |
| title_short | Controlling the properties of thermoplastic starch films with hydrogen bonding plasticizers |
| title_sort | controlling the properties of thermoplastic starch films with hydrogen bonding plasticizers |
| topic | Thermoplastic starch Plasticization Crystallinity Humidity Deep eutectic solvents Stability |
| url | http://www.sciencedirect.com/science/article/pii/S2666893923000129 |
| work_keys_str_mv | AT yulingchen controllingthepropertiesofthermoplasticstarchfilmswithhydrogenbondingplasticizers AT kennethrshull controllingthepropertiesofthermoplasticstarchfilmswithhydrogenbondingplasticizers |