Packaging Materials Based on Styrene-Isoprene-Styrene Triblock Copolymer Modified with Graphene
This study presents the improved stabilization effects of graphene on a polymer substrate, namely a styrene-isoprene-styrene triblock copolymer (SIS) which creates opportunities for long-term applications and radiation processing. The added graphene has a remarkable activity on the protection of pol...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/2/353 |
| _version_ | 1797437596850192384 |
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| author | Traian Zaharescu Cristina Banciu |
| author_facet | Traian Zaharescu Cristina Banciu |
| author_sort | Traian Zaharescu |
| collection | DOAJ |
| description | This study presents the improved stabilization effects of graphene on a polymer substrate, namely a styrene-isoprene-styrene triblock copolymer (SIS) which creates opportunities for long-term applications and radiation processing. The added graphene has a remarkable activity on the protection of polymer against their oxidation due to the penetration of free macroradical fragments into the free interlayer space. The chemiluminescence procedure used for the evaluation of the progress of oxidation reveals the delaying effect of oxidative degradation by the doubling extension of oxidation induction time, when the material formulation containing graphene is oxidized at 130 °C. The pristine polymer that is thermally aged requires an activation energy of 142 kJ mol<sup>−1</sup>, while the modified material needs 148, 158 and 169 kJ mol<sup>−1</sup>, for the oxidative degradation in the presence of 1, 2 and, respectively, 3 wt% of graphene. The contribution of graphene content (1 wt%) on the stability improvement of SIS is demonstrated by the increase of onset oxidation temperature from 190 °C for neat polymer to 196 °C in the presence of graphene and to 205 °C for the polymer stabilized with graphene and rosemary extract. The addition of graphene into the polymer formulations is a successful method for enlarging durability instead of the modification of receipt with synthesis antioxidants. The presumable applications of these studied materials cover the areas of medical wear, food packaging, commodities, sealing gaskets and others that may also be included through the products for nuclear power plants. |
| first_indexed | 2024-03-09T11:23:43Z |
| format | Article |
| id | doaj.art-c04f48b067da482cbb5746f18d46de8f |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T11:23:43Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-c04f48b067da482cbb5746f18d46de8f2023-12-01T00:08:36ZengMDPI AGPolymers2073-43602023-01-0115235310.3390/polym15020353Packaging Materials Based on Styrene-Isoprene-Styrene Triblock Copolymer Modified with GrapheneTraian Zaharescu0Cristina Banciu1INCDIE ICPE CA, 313 Splaiul Unirii, 030138 Bucharest, RomaniaINCDIE ICPE CA, 313 Splaiul Unirii, 030138 Bucharest, RomaniaThis study presents the improved stabilization effects of graphene on a polymer substrate, namely a styrene-isoprene-styrene triblock copolymer (SIS) which creates opportunities for long-term applications and radiation processing. The added graphene has a remarkable activity on the protection of polymer against their oxidation due to the penetration of free macroradical fragments into the free interlayer space. The chemiluminescence procedure used for the evaluation of the progress of oxidation reveals the delaying effect of oxidative degradation by the doubling extension of oxidation induction time, when the material formulation containing graphene is oxidized at 130 °C. The pristine polymer that is thermally aged requires an activation energy of 142 kJ mol<sup>−1</sup>, while the modified material needs 148, 158 and 169 kJ mol<sup>−1</sup>, for the oxidative degradation in the presence of 1, 2 and, respectively, 3 wt% of graphene. The contribution of graphene content (1 wt%) on the stability improvement of SIS is demonstrated by the increase of onset oxidation temperature from 190 °C for neat polymer to 196 °C in the presence of graphene and to 205 °C for the polymer stabilized with graphene and rosemary extract. The addition of graphene into the polymer formulations is a successful method for enlarging durability instead of the modification of receipt with synthesis antioxidants. The presumable applications of these studied materials cover the areas of medical wear, food packaging, commodities, sealing gaskets and others that may also be included through the products for nuclear power plants.https://www.mdpi.com/2073-4360/15/2/353styrene-isoprene-styrene (SIS)graphenerosemarydurability analysisthermal degradationstabilization |
| spellingShingle | Traian Zaharescu Cristina Banciu Packaging Materials Based on Styrene-Isoprene-Styrene Triblock Copolymer Modified with Graphene Polymers styrene-isoprene-styrene (SIS) graphene rosemary durability analysis thermal degradation stabilization |
| title | Packaging Materials Based on Styrene-Isoprene-Styrene Triblock Copolymer Modified with Graphene |
| title_full | Packaging Materials Based on Styrene-Isoprene-Styrene Triblock Copolymer Modified with Graphene |
| title_fullStr | Packaging Materials Based on Styrene-Isoprene-Styrene Triblock Copolymer Modified with Graphene |
| title_full_unstemmed | Packaging Materials Based on Styrene-Isoprene-Styrene Triblock Copolymer Modified with Graphene |
| title_short | Packaging Materials Based on Styrene-Isoprene-Styrene Triblock Copolymer Modified with Graphene |
| title_sort | packaging materials based on styrene isoprene styrene triblock copolymer modified with graphene |
| topic | styrene-isoprene-styrene (SIS) graphene rosemary durability analysis thermal degradation stabilization |
| url | https://www.mdpi.com/2073-4360/15/2/353 |
| work_keys_str_mv | AT traianzaharescu packagingmaterialsbasedonstyreneisoprenestyrenetriblockcopolymermodifiedwithgraphene AT cristinabanciu packagingmaterialsbasedonstyreneisoprenestyrenetriblockcopolymermodifiedwithgraphene |