Modified starch with bis(2-hydroxyethyl) terephthalate: synthesis, characterization and elaboration of films

• Published in: Journal of polymer research Vol. 27; no. 9
• Main Authors: Ramírez-Centeno, Silvia, Marcos-Fernández, Angel, Aparicio-Saguilán, Alejandro, Navarro-Crespo, Rodrigo, Báez-García, José Eduardo, Páramo-Calderón, Delia Esther, Ramírez-Hernández, Aurelio
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 2020; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Chromium; Degradation; Electrical resistivity; Industrial Chemistry/Chemical Engineering; Mechanical properties; Morphology; Original Paper; Polymer Sciences; Terephthalate; Thermal stability; BHET; Modified starch; Films; Banana starch
• ISSN: 1022-9760; 1572-8935
• DOI: 10.1007/s10965-020-02249-4

Banana starch was modified with B bis(2-hydroxyethyl) terephthalate and its instrumental characterization allowed to propose a chemical structure. In the carbon 6 (C6) of the starch the modification reaction was carried out. The morphology of starch changes due to its chemical modification. The modified starch showed a lower crystallinity and thermal stability, compared to the native starch favoring its film formation. The electrical conductivity of the modified starch films was 2.7 times higher than that for the native starch film. The aqueous hydrolysis of the modified starch films was carried out obtaining a degradation of 77% in a determined time. Modified starch films present different mechanical properties compared to native starch film. These results have high application potential to be used in PET degradation products.