| Title |
Exploring Green Route of Cross-Linking for Bio-Based Ethylene Propylene Diene Rubber: A Step toward Circular Economy |
| ID_Doc |
4322 |
| Authors |
Aziz, B; Maji, P; Parathodika, AR; Naskar, K |
| Title |
Exploring Green Route of Cross-Linking for Bio-Based Ethylene Propylene Diene Rubber: A Step toward Circular Economy |
| Year |
2024 |
| Published |
Acs Sustainable Chemistry & Engineering, 12, 31 |
| Abstract |
The circular economy is predicated on sustainability; nevertheless, conventional elastomeric products that have been cross-linked with sulfur or peroxide fail to adhere to this principle by virtue of the permanent cross-linking bonds that they create in the elastomer chains. In this research article, we have explored the green cross-linking system in bio-based ethylene propylene diene (EPDM) rubber to achieve desirable mechanical properties along with the ability of recycling to produce upstream materials. The bio-based EPDM was first epoxidized through an in situ epoxidation reaction. Then various dosages of bio-based diacid (decanedioic acid) were added to produce beta-hydroxy ester linkages between the rubber chains that produce a covalent adaptable network (CAN). When 200 mol % of diacid (D-200) is added compared with the epoxy rings of epoxidized EPDM (e-EPDM), the resulting material shows desirable physical and mechanical properties. On the other hand, 50 mol % of diacid (D-50) provides improved rheological and stress relaxation properties to the rubber compound. Furthermore, the designed materials retain exceptional mechanical properties even after recycling that are suitable for practical applications. The strategy is important for creating a strong and flexible network in cross-linked rubber, which has promising possibilities for advancing the production of eco-friendly rubber compounds. |
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