Enhancement of thermal stability, UV barrier, biodegradability, and moisture resistance of potato starch–agar bioplastics using biogenic TiO2 nanoparticles
This study evaluated the influence of biogenically synthesized TiO2 nanoparticles (NPs) on the structure, properties, and biodegradability of bioplastics made from potato starch and agar. TiO2 NPs (13.41 ± 1.0 nm, crystalline structure confirmed by X-ray diffraction) were incorporated at 0.674 %, 0....
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-08-01
|
| Series: | Polymer Testing |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142941825001825 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850123867747516416 |
|---|---|
| author | David Asmat-Campos Meliza Lindsay Rojas Angel Carreño-Ortega Noemi Raquel-Checca |
| author_facet | David Asmat-Campos Meliza Lindsay Rojas Angel Carreño-Ortega Noemi Raquel-Checca |
| author_sort | David Asmat-Campos |
| collection | DOAJ |
| description | This study evaluated the influence of biogenically synthesized TiO2 nanoparticles (NPs) on the structure, properties, and biodegradability of bioplastics made from potato starch and agar. TiO2 NPs (13.41 ± 1.0 nm, crystalline structure confirmed by X-ray diffraction) were incorporated at 0.674 %, 0.506 %, and 0.434 % concentrations. EDS and X-ray fluorescence confirmed their presence in the bioplastic matrix, while FTIR and Raman spectroscopy revealed interactions with polymer functional groups. TiO2 addition reduced transparency from 79.1 % (control) to 46.81 % and improved UV-blocking capacity (68.7 % UV-A, 79.1 % UV-B). Water absorption decreased, indicating lower moisture affinity. Thermally, the 0.506 % NP sample showed superior stability with a decomposition temperature of 318.52 °C. Tensile strength decreased from 7.459 MPa (control) to 4.873 MPa, likely due to NP distribution and agglomeration. Biodegradability tests showed 52–60 % degradation in seawater (15 days) and over 76 % in soil (28 days), with the 0.506 % NP sample reaching the highest degradation (79.7 %). These findings highlight TiO2 NPs’ potential to enhance thermal stability, UV protection, moisture resistance, and biodegradability in sustainable bioplastics. |
| format | Article |
| id | doaj-art-e9525897bbbd4344bf2b5a1b0fbc9d4b |
| institution | OA Journals |
| issn | 1873-2348 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj-art-e9525897bbbd4344bf2b5a1b0fbc9d4b2025-08-20T02:34:29ZengElsevierPolymer Testing1873-23482025-08-0114910886810.1016/j.polymertesting.2025.108868Enhancement of thermal stability, UV barrier, biodegradability, and moisture resistance of potato starch–agar bioplastics using biogenic TiO2 nanoparticlesDavid Asmat-Campos0Meliza Lindsay Rojas1Angel Carreño-Ortega2Noemi Raquel-Checca3Grupo de Investigación en Ciencias Aplicadas y Nuevas Tecnologías, Universidad Privada del Norte, Trujillo, Peru; Laboratorio de Investigación en Nanotecnología, Universidad Privada del Norte, Campus Trujillo, Peru; Centro de Investigación Avanzada en Agroingeniería, Universidad Privada del Norte (UPN), Peru; Corresponding author. Grupo de Investigación en Ciencias Aplicadas y Nuevas Tecnologías, Universidad Privada del Norte, Trujillo, Peru.Centro de Investigación Avanzada en Agroingeniería, Universidad Privada del Norte (UPN), PeruDepartamento de Ingeniería, Universidad de Almería, Centro de Investigación CIMEDES, Almería, SpainBrazilian Center for Physics Research, Rio de Janeiro, 22290-180, BrazilThis study evaluated the influence of biogenically synthesized TiO2 nanoparticles (NPs) on the structure, properties, and biodegradability of bioplastics made from potato starch and agar. TiO2 NPs (13.41 ± 1.0 nm, crystalline structure confirmed by X-ray diffraction) were incorporated at 0.674 %, 0.506 %, and 0.434 % concentrations. EDS and X-ray fluorescence confirmed their presence in the bioplastic matrix, while FTIR and Raman spectroscopy revealed interactions with polymer functional groups. TiO2 addition reduced transparency from 79.1 % (control) to 46.81 % and improved UV-blocking capacity (68.7 % UV-A, 79.1 % UV-B). Water absorption decreased, indicating lower moisture affinity. Thermally, the 0.506 % NP sample showed superior stability with a decomposition temperature of 318.52 °C. Tensile strength decreased from 7.459 MPa (control) to 4.873 MPa, likely due to NP distribution and agglomeration. Biodegradability tests showed 52–60 % degradation in seawater (15 days) and over 76 % in soil (28 days), with the 0.506 % NP sample reaching the highest degradation (79.7 %). These findings highlight TiO2 NPs’ potential to enhance thermal stability, UV protection, moisture resistance, and biodegradability in sustainable bioplastics.http://www.sciencedirect.com/science/article/pii/S0142941825001825BiofilmsBiopolymersTiO2 nanoparticlesBioplastics |
| spellingShingle | David Asmat-Campos Meliza Lindsay Rojas Angel Carreño-Ortega Noemi Raquel-Checca Enhancement of thermal stability, UV barrier, biodegradability, and moisture resistance of potato starch–agar bioplastics using biogenic TiO2 nanoparticles Polymer Testing Biofilms Biopolymers TiO2 nanoparticles Bioplastics |
| title | Enhancement of thermal stability, UV barrier, biodegradability, and moisture resistance of potato starch–agar bioplastics using biogenic TiO2 nanoparticles |
| title_full | Enhancement of thermal stability, UV barrier, biodegradability, and moisture resistance of potato starch–agar bioplastics using biogenic TiO2 nanoparticles |
| title_fullStr | Enhancement of thermal stability, UV barrier, biodegradability, and moisture resistance of potato starch–agar bioplastics using biogenic TiO2 nanoparticles |
| title_full_unstemmed | Enhancement of thermal stability, UV barrier, biodegradability, and moisture resistance of potato starch–agar bioplastics using biogenic TiO2 nanoparticles |
| title_short | Enhancement of thermal stability, UV barrier, biodegradability, and moisture resistance of potato starch–agar bioplastics using biogenic TiO2 nanoparticles |
| title_sort | enhancement of thermal stability uv barrier biodegradability and moisture resistance of potato starch agar bioplastics using biogenic tio2 nanoparticles |
| topic | Biofilms Biopolymers TiO2 nanoparticles Bioplastics |
| url | http://www.sciencedirect.com/science/article/pii/S0142941825001825 |
| work_keys_str_mv | AT davidasmatcampos enhancementofthermalstabilityuvbarrierbiodegradabilityandmoistureresistanceofpotatostarchagarbioplasticsusingbiogenictio2nanoparticles AT melizalindsayrojas enhancementofthermalstabilityuvbarrierbiodegradabilityandmoistureresistanceofpotatostarchagarbioplasticsusingbiogenictio2nanoparticles AT angelcarrenoortega enhancementofthermalstabilityuvbarrierbiodegradabilityandmoistureresistanceofpotatostarchagarbioplasticsusingbiogenictio2nanoparticles AT noemiraquelchecca enhancementofthermalstabilityuvbarrierbiodegradabilityandmoistureresistanceofpotatostarchagarbioplasticsusingbiogenictio2nanoparticles |