Gamma irradiation effect on properties of modified graphene doped PVA nanocomposite films
Abstract Gamma radiation effects on extrinsically electrical semiconducting polymer nanocomposite films of poly(vinyl alcohol) (PVA) and 0.5 wt% histidine-modified reduced graphene oxide (H-RGO) filler were evaluated. Thermogravimetric analysis showed thermal degradation stages of the films and UV-V...
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Associação Brasileira de Polímeros
2025-01-01
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| Series: | Polímeros |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282024000400605&lng=en&tlng=en |
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| _version_ | 1832592556369641472 |
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| author | Thaises Lima Filipe Diniz Elmo Araújo Patrícia Araújo |
| author_facet | Thaises Lima Filipe Diniz Elmo Araújo Patrícia Araújo |
| author_sort | Thaises Lima |
| collection | DOAJ |
| description | Abstract Gamma radiation effects on extrinsically electrical semiconducting polymer nanocomposite films of poly(vinyl alcohol) (PVA) and 0.5 wt% histidine-modified reduced graphene oxide (H-RGO) filler were evaluated. Thermogravimetric analysis showed thermal degradation stages of the films and UV-Vis analysis allowed the study of optical parameters. Optical band gap energy (Eg) of PVA was shifted from 6.20 to 3.76 eV with the addition of H-RGO filler into the polymer matrix, while the electrical conductivity changed from 10-11 (isolator) to 10-6 (semiconductor) S/cm and PVA/H-RGO nanocomposite reached 10-4 S/cm at 25 kGy gamma-radiation dose. PVA/H-RGO nanocomposite films are promising in a wide range of potential applications, such as bio and chemical sensors, catalysis, and active layers for optoelectronic devices. |
| format | Article |
| id | doaj-art-2e1f4f63d45b4687951736defa532658 |
| institution | Kabale University |
| issn | 1678-5169 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Associação Brasileira de Polímeros |
| record_format | Article |
| series | Polímeros |
| spelling | doaj-art-2e1f4f63d45b4687951736defa5326582025-01-21T07:36:24ZengAssociação Brasileira de PolímerosPolímeros1678-51692025-01-0134410.1590/0104-1428.20230106Gamma irradiation effect on properties of modified graphene doped PVA nanocomposite filmsThaises Limahttps://orcid.org/0000-0002-4083-2958Filipe Dinizhttps://orcid.org/0000-0002-0815-3680Elmo Araújohttps://orcid.org/0000-0002-4990-3935Patrícia Araújohttps://orcid.org/0000-0002-5625-737XAbstract Gamma radiation effects on extrinsically electrical semiconducting polymer nanocomposite films of poly(vinyl alcohol) (PVA) and 0.5 wt% histidine-modified reduced graphene oxide (H-RGO) filler were evaluated. Thermogravimetric analysis showed thermal degradation stages of the films and UV-Vis analysis allowed the study of optical parameters. Optical band gap energy (Eg) of PVA was shifted from 6.20 to 3.76 eV with the addition of H-RGO filler into the polymer matrix, while the electrical conductivity changed from 10-11 (isolator) to 10-6 (semiconductor) S/cm and PVA/H-RGO nanocomposite reached 10-4 S/cm at 25 kGy gamma-radiation dose. PVA/H-RGO nanocomposite films are promising in a wide range of potential applications, such as bio and chemical sensors, catalysis, and active layers for optoelectronic devices.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282024000400605&lng=en&tlng=enelectrical conductivitygamma radiationoptical band gappolymer compositesthermal analysis |
| spellingShingle | Thaises Lima Filipe Diniz Elmo Araújo Patrícia Araújo Gamma irradiation effect on properties of modified graphene doped PVA nanocomposite films Polímeros electrical conductivity gamma radiation optical band gap polymer composites thermal analysis |
| title | Gamma irradiation effect on properties of modified graphene doped PVA nanocomposite films |
| title_full | Gamma irradiation effect on properties of modified graphene doped PVA nanocomposite films |
| title_fullStr | Gamma irradiation effect on properties of modified graphene doped PVA nanocomposite films |
| title_full_unstemmed | Gamma irradiation effect on properties of modified graphene doped PVA nanocomposite films |
| title_short | Gamma irradiation effect on properties of modified graphene doped PVA nanocomposite films |
| title_sort | gamma irradiation effect on properties of modified graphene doped pva nanocomposite films |
| topic | electrical conductivity gamma radiation optical band gap polymer composites thermal analysis |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282024000400605&lng=en&tlng=en |
| work_keys_str_mv | AT thaiseslima gammairradiationeffectonpropertiesofmodifiedgraphenedopedpvananocompositefilms AT filipediniz gammairradiationeffectonpropertiesofmodifiedgraphenedopedpvananocompositefilms AT elmoaraujo gammairradiationeffectonpropertiesofmodifiedgraphenedopedpvananocompositefilms AT patriciaaraujo gammairradiationeffectonpropertiesofmodifiedgraphenedopedpvananocompositefilms |