Comparative Performance and Modification of Rubber and Reinforcing-Filler on the Tearing Resistance of Peroxide-Cured Natural-Rubber/Silica Compounds
Hypothesis: To enhance the crack growth resistance of rubber composites one strategy is to embed mechanisms for viscoelastic dissipation. This can be fulfilled by enlarging the bound rubber content through either increasing the filler-filler or filler-polymer interactions. Improving the filler-polym...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | fas |
| Published: |
Iran Polymer and Petrochemical Institute
2022-12-01
|
| Series: | علوم و تکنولوژی پلیمر |
| Subjects: | |
| Online Access: | http://jips.ippi.ac.ir/article_1941_9fb0be2c10e39c0fd17602e36f722615.pdf |
| _version_ | 1797836835711352832 |
|---|---|
| author | Mahaan Ghorashi Mohammad Alimardani Seyed Mostaffa Hosseini |
| author_facet | Mahaan Ghorashi Mohammad Alimardani Seyed Mostaffa Hosseini |
| author_sort | Mahaan Ghorashi |
| collection | DOAJ |
| description | Hypothesis: To enhance the crack growth resistance of rubber composites one strategy is to embed mechanisms for viscoelastic dissipation. This can be fulfilled by enlarging the bound rubber content through either increasing the filler-filler or filler-polymer interactions. Improving the filler-polymer interaction through surface modification of silica by silanes is not a favorable route because of the adverse impact of surface modification on lowering the share of filler-filler interaction on the bound rubber content. Modification of the rubber backbone appears to be a proper alternative. The difference in the .performance of these two methods can be observed well in peroxide-cured rubbersMethods: Present contribution performs a comparative study on the impact of modification in rubber or reinforcing silica on the crack growth resistance of peroxide-cured natural rubber (NR). For NR/silica composites, the modifications in rubber and silica are respectively conducted by grafting maleic anhydride or the bi-functional silane of bis(triethoxysilylpropyl)tetrasulfide (TESPT). For the case of maleic anhydride grafting, the influence of initiation by thermal and chemical routes is also comparedFindings: Results revealed that the modification of the rubber with maleic anhydride leads to an increase in the polymer-filler interactions and the bound rubber content. This imparts a favorable balance in mechanical strength and resistance to crack growth of the resulting composite. Tearing resistance of the system containing maleated rubber in the high loading range of silica showed a significant increase of about 150% compared to a neat rubber system filled with unmodified silica. It was suggested that the chemical crosslink density and viscoelastic dissipation are, respectively, the controlling mechanisms of tear resistance in low and high loading range of silica. |
| first_indexed | 2024-04-09T15:15:19Z |
| format | Article |
| id | doaj.art-b2c73ddfb7ab4be6b66dd334e3827504 |
| institution | Directory Open Access Journal |
| issn | 1016-3255 2008-0883 |
| language | fas |
| last_indexed | 2024-04-09T15:15:19Z |
| publishDate | 2022-12-01 |
| publisher | Iran Polymer and Petrochemical Institute |
| record_format | Article |
| series | علوم و تکنولوژی پلیمر |
| spelling | doaj.art-b2c73ddfb7ab4be6b66dd334e38275042023-04-30T05:45:13ZfasIran Polymer and Petrochemical Instituteعلوم و تکنولوژی پلیمر1016-32552008-08832022-12-0135548750010.22063/jipst.2023.3281.21941941Comparative Performance and Modification of Rubber and Reinforcing-Filler on the Tearing Resistance of Peroxide-Cured Natural-Rubber/Silica CompoundsMahaan Ghorashi0Mohammad Alimardani1Seyed Mostaffa Hosseini2Department of Polymer Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, P.O. Box 14115-114, Tehran, IranDepartment of Polymer Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, P.O. Box 14115-114, Tehran, IranDepartment of Polymer Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, P.O. Box 14115-114, Tehran, IranHypothesis: To enhance the crack growth resistance of rubber composites one strategy is to embed mechanisms for viscoelastic dissipation. This can be fulfilled by enlarging the bound rubber content through either increasing the filler-filler or filler-polymer interactions. Improving the filler-polymer interaction through surface modification of silica by silanes is not a favorable route because of the adverse impact of surface modification on lowering the share of filler-filler interaction on the bound rubber content. Modification of the rubber backbone appears to be a proper alternative. The difference in the .performance of these two methods can be observed well in peroxide-cured rubbersMethods: Present contribution performs a comparative study on the impact of modification in rubber or reinforcing silica on the crack growth resistance of peroxide-cured natural rubber (NR). For NR/silica composites, the modifications in rubber and silica are respectively conducted by grafting maleic anhydride or the bi-functional silane of bis(triethoxysilylpropyl)tetrasulfide (TESPT). For the case of maleic anhydride grafting, the influence of initiation by thermal and chemical routes is also comparedFindings: Results revealed that the modification of the rubber with maleic anhydride leads to an increase in the polymer-filler interactions and the bound rubber content. This imparts a favorable balance in mechanical strength and resistance to crack growth of the resulting composite. Tearing resistance of the system containing maleated rubber in the high loading range of silica showed a significant increase of about 150% compared to a neat rubber system filled with unmodified silica. It was suggested that the chemical crosslink density and viscoelastic dissipation are, respectively, the controlling mechanisms of tear resistance in low and high loading range of silica.http://jips.ippi.ac.ir/article_1941_9fb0be2c10e39c0fd17602e36f722615.pdfnatural rubbersilicamechanical strengthcrack growth resistancebound rubber |
| spellingShingle | Mahaan Ghorashi Mohammad Alimardani Seyed Mostaffa Hosseini Comparative Performance and Modification of Rubber and Reinforcing-Filler on the Tearing Resistance of Peroxide-Cured Natural-Rubber/Silica Compounds علوم و تکنولوژی پلیمر natural rubber silica mechanical strength crack growth resistance bound rubber |
| title | Comparative Performance and Modification of Rubber and Reinforcing-Filler on the Tearing Resistance of Peroxide-Cured Natural-Rubber/Silica Compounds |
| title_full | Comparative Performance and Modification of Rubber and Reinforcing-Filler on the Tearing Resistance of Peroxide-Cured Natural-Rubber/Silica Compounds |
| title_fullStr | Comparative Performance and Modification of Rubber and Reinforcing-Filler on the Tearing Resistance of Peroxide-Cured Natural-Rubber/Silica Compounds |
| title_full_unstemmed | Comparative Performance and Modification of Rubber and Reinforcing-Filler on the Tearing Resistance of Peroxide-Cured Natural-Rubber/Silica Compounds |
| title_short | Comparative Performance and Modification of Rubber and Reinforcing-Filler on the Tearing Resistance of Peroxide-Cured Natural-Rubber/Silica Compounds |
| title_sort | comparative performance and modification of rubber and reinforcing filler on the tearing resistance of peroxide cured natural rubber silica compounds |
| topic | natural rubber silica mechanical strength crack growth resistance bound rubber |
| url | http://jips.ippi.ac.ir/article_1941_9fb0be2c10e39c0fd17602e36f722615.pdf |
| work_keys_str_mv | AT mahaanghorashi comparativeperformanceandmodificationofrubberandreinforcingfilleronthetearingresistanceofperoxidecurednaturalrubbersilicacompounds AT mohammadalimardani comparativeperformanceandmodificationofrubberandreinforcingfilleronthetearingresistanceofperoxidecurednaturalrubbersilicacompounds AT seyedmostaffahosseini comparativeperformanceandmodificationofrubberandreinforcingfilleronthetearingresistanceofperoxidecurednaturalrubbersilicacompounds |