Co-Plasticization of Starch with Glycerol and Isosorbide: Effect on Retrogradation in Thermo-Plastic Cassava Starch Films
Thermoplastic starch (TPS) has emerged as an essential alternative to produce environmentally friendly packaging; however, retrogradation is a disadvantage that affects its shelf life. This study analyzed the co-plasticizing effect of isosorbide on the mechanical, thermal, physicochemical, and micro...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-04-01
|
| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/15/9/2104 |
| _version_ | 1797601862471385088 |
|---|---|
| author | Rudy A. Gómez-López Camilo E. Montilla-Buitrago Héctor S. Villada-Castillo Aidé Sáenz-Galindo Felipe Avalos-Belmontes Liliana Serna-Cock |
| author_facet | Rudy A. Gómez-López Camilo E. Montilla-Buitrago Héctor S. Villada-Castillo Aidé Sáenz-Galindo Felipe Avalos-Belmontes Liliana Serna-Cock |
| author_sort | Rudy A. Gómez-López |
| collection | DOAJ |
| description | Thermoplastic starch (TPS) has emerged as an essential alternative to produce environmentally friendly packaging; however, retrogradation is a disadvantage that affects its shelf life. This study analyzed the co-plasticizing effect of isosorbide on the mechanical, thermal, physicochemical, and microstructural properties and the retrogradation of films obtained by blown film extrusion from thermoplasticized starch with mixtures of glycerol and isosorbide in different ratios (3:0, 2:1, 1:2, and 0:3, respectively). The results showed that the higher concentration of isosorbide significantly increased the tensile strength; however, it reduced the elongation. Retrogradation modeled using the Avrami equation showed that the presence of isosorbide reduced the retrogradation rate (k) and modified the recrystallization mechanism (n). The relative crystallinity in the plasticized TPS films was reduced to 89%, and the adsorption significantly decreased. Isosorbide was very important in reducing the retrogradation of TPS. The best performance was obtained with the 2:1 ratio of glycerol/isosorbide due to the synergistic effect between the plasticizers. The results would allow tuning the properties of TPS films by combining glycerol/isosorbide in different ratios, which enables the design of materials tailored to potential application requirements. |
| first_indexed | 2024-03-11T04:09:35Z |
| format | Article |
| id | doaj.art-e406282e04c74c08b477323f20c7f948 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T04:09:35Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-e406282e04c74c08b477323f20c7f9482023-11-17T23:35:13ZengMDPI AGPolymers2073-43602023-04-01159210410.3390/polym15092104Co-Plasticization of Starch with Glycerol and Isosorbide: Effect on Retrogradation in Thermo-Plastic Cassava Starch FilmsRudy A. Gómez-López0Camilo E. Montilla-Buitrago1Héctor S. Villada-Castillo2Aidé Sáenz-Galindo3Felipe Avalos-Belmontes4Liliana Serna-Cock5Grupo de Investigación Ciencia y Tecnología de Biomoléculas de Interés Agroindustrial, (CYTBIA), Departamento de Ingeniería Agroindustrial, Facultad de Ciencias Agrarias, Universidad del Cauca, Cauca 190017, ColombiaGrupo de Investigación Ciencia y Tecnología de Biomoléculas de Interés Agroindustrial, (CYTBIA), Departamento de Ingeniería Agroindustrial, Facultad de Ciencias Agrarias, Universidad del Cauca, Cauca 190017, ColombiaGrupo de Investigación Ciencia y Tecnología de Biomoléculas de Interés Agroindustrial, (CYTBIA), Departamento de Ingeniería Agroindustrial, Facultad de Ciencias Agrarias, Universidad del Cauca, Cauca 190017, ColombiaFacultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Boulevard Venustiano Carranza y José Cárdenas Valdés, Colonia República, Saltillo 25280, MéxicoFacultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Boulevard Venustiano Carranza y José Cárdenas Valdés, Colonia República, Saltillo 25280, MéxicoFacultad de Ingeniería y Administración, Universidad Nacional de Colombia Sede Palmira, Palmira 763533, ColombiaThermoplastic starch (TPS) has emerged as an essential alternative to produce environmentally friendly packaging; however, retrogradation is a disadvantage that affects its shelf life. This study analyzed the co-plasticizing effect of isosorbide on the mechanical, thermal, physicochemical, and microstructural properties and the retrogradation of films obtained by blown film extrusion from thermoplasticized starch with mixtures of glycerol and isosorbide in different ratios (3:0, 2:1, 1:2, and 0:3, respectively). The results showed that the higher concentration of isosorbide significantly increased the tensile strength; however, it reduced the elongation. Retrogradation modeled using the Avrami equation showed that the presence of isosorbide reduced the retrogradation rate (k) and modified the recrystallization mechanism (n). The relative crystallinity in the plasticized TPS films was reduced to 89%, and the adsorption significantly decreased. Isosorbide was very important in reducing the retrogradation of TPS. The best performance was obtained with the 2:1 ratio of glycerol/isosorbide due to the synergistic effect between the plasticizers. The results would allow tuning the properties of TPS films by combining glycerol/isosorbide in different ratios, which enables the design of materials tailored to potential application requirements.https://www.mdpi.com/2073-4360/15/9/2104thermoplastic starchretrogradationextrusionco-plasticizationisosorbide |
| spellingShingle | Rudy A. Gómez-López Camilo E. Montilla-Buitrago Héctor S. Villada-Castillo Aidé Sáenz-Galindo Felipe Avalos-Belmontes Liliana Serna-Cock Co-Plasticization of Starch with Glycerol and Isosorbide: Effect on Retrogradation in Thermo-Plastic Cassava Starch Films Polymers thermoplastic starch retrogradation extrusion co-plasticization isosorbide |
| title | Co-Plasticization of Starch with Glycerol and Isosorbide: Effect on Retrogradation in Thermo-Plastic Cassava Starch Films |
| title_full | Co-Plasticization of Starch with Glycerol and Isosorbide: Effect on Retrogradation in Thermo-Plastic Cassava Starch Films |
| title_fullStr | Co-Plasticization of Starch with Glycerol and Isosorbide: Effect on Retrogradation in Thermo-Plastic Cassava Starch Films |
| title_full_unstemmed | Co-Plasticization of Starch with Glycerol and Isosorbide: Effect on Retrogradation in Thermo-Plastic Cassava Starch Films |
| title_short | Co-Plasticization of Starch with Glycerol and Isosorbide: Effect on Retrogradation in Thermo-Plastic Cassava Starch Films |
| title_sort | co plasticization of starch with glycerol and isosorbide effect on retrogradation in thermo plastic cassava starch films |
| topic | thermoplastic starch retrogradation extrusion co-plasticization isosorbide |
| url | https://www.mdpi.com/2073-4360/15/9/2104 |
| work_keys_str_mv | AT rudyagomezlopez coplasticizationofstarchwithglycerolandisosorbideeffectonretrogradationinthermoplasticcassavastarchfilms AT camiloemontillabuitrago coplasticizationofstarchwithglycerolandisosorbideeffectonretrogradationinthermoplasticcassavastarchfilms AT hectorsvilladacastillo coplasticizationofstarchwithglycerolandisosorbideeffectonretrogradationinthermoplasticcassavastarchfilms AT aidesaenzgalindo coplasticizationofstarchwithglycerolandisosorbideeffectonretrogradationinthermoplasticcassavastarchfilms AT felipeavalosbelmontes coplasticizationofstarchwithglycerolandisosorbideeffectonretrogradationinthermoplasticcassavastarchfilms AT lilianasernacock coplasticizationofstarchwithglycerolandisosorbideeffectonretrogradationinthermoplasticcassavastarchfilms |