Using a facile method to predict properties of recycled waste nitrile rubber (NBR) through devulcanization
Abstract To prepare a reliable method for predicting the properties of devulcanized rubbers a nitrile rubber (NBR) compound was prepared and masticated before vulcanization for 0, 30 and 60 min under mechanical stress to prepare NBRs with different molecular weights. The masticated samples were vulc...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-42438-x |
| _version_ | 1797452943815868416 |
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| author | Mohammad Amin Ghowsi Masoud Jamshidi |
| author_facet | Mohammad Amin Ghowsi Masoud Jamshidi |
| author_sort | Mohammad Amin Ghowsi |
| collection | DOAJ |
| description | Abstract To prepare a reliable method for predicting the properties of devulcanized rubbers a nitrile rubber (NBR) compound was prepared and masticated before vulcanization for 0, 30 and 60 min under mechanical stress to prepare NBRs with different molecular weights. The masticated samples were vulcanized at different accelerator contents to prepare damples with different crosslink densities. The physical/mechanical/thermal properties (i.e. crosslink density, tensile strength, modulus, modulus at 100 and 300% elongation, elongation at break, hardness, curing behavior and molecular weight) of the samples were experimentally evaluated. In the next step, the prepared samples were assumed as devulcanized NBRs that underwent chains scission (masticated samples) or crosslinks breakage (vulcanized at different accelerator contents). On this basis, hypothetical devulcanization routes were considered between each sample that underwent chains scission or crosslinks breakage. Based on the results, numerical relationships between the number of chains scission or crosslinks breakage and decrease in the properties were obtained. Finally, the numerical reationships were used to calculate the properties of the samples that underwent both of chains scission and crosslinks breakage. It was found that the calculated contents of hardness, modulus at 100% and molecular weight (MZ) using the prepared method were very close to the evaluated ones. |
| first_indexed | 2024-03-09T15:15:00Z |
| format | Article |
| id | doaj.art-cf432875f2f2417d8cbe65cacfaa0243 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-09T15:15:00Z |
| publishDate | 2023-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-cf432875f2f2417d8cbe65cacfaa02432023-11-26T13:08:16ZengNature PortfolioScientific Reports2045-23222023-09-0113111410.1038/s41598-023-42438-xUsing a facile method to predict properties of recycled waste nitrile rubber (NBR) through devulcanizationMohammad Amin Ghowsi0Masoud Jamshidi1Constructional Polymers and Composites Research Lab., School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology (IUST)Constructional Polymers and Composites Research Lab., School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology (IUST)Abstract To prepare a reliable method for predicting the properties of devulcanized rubbers a nitrile rubber (NBR) compound was prepared and masticated before vulcanization for 0, 30 and 60 min under mechanical stress to prepare NBRs with different molecular weights. The masticated samples were vulcanized at different accelerator contents to prepare damples with different crosslink densities. The physical/mechanical/thermal properties (i.e. crosslink density, tensile strength, modulus, modulus at 100 and 300% elongation, elongation at break, hardness, curing behavior and molecular weight) of the samples were experimentally evaluated. In the next step, the prepared samples were assumed as devulcanized NBRs that underwent chains scission (masticated samples) or crosslinks breakage (vulcanized at different accelerator contents). On this basis, hypothetical devulcanization routes were considered between each sample that underwent chains scission or crosslinks breakage. Based on the results, numerical relationships between the number of chains scission or crosslinks breakage and decrease in the properties were obtained. Finally, the numerical reationships were used to calculate the properties of the samples that underwent both of chains scission and crosslinks breakage. It was found that the calculated contents of hardness, modulus at 100% and molecular weight (MZ) using the prepared method were very close to the evaluated ones.https://doi.org/10.1038/s41598-023-42438-x |
| spellingShingle | Mohammad Amin Ghowsi Masoud Jamshidi Using a facile method to predict properties of recycled waste nitrile rubber (NBR) through devulcanization Scientific Reports |
| title | Using a facile method to predict properties of recycled waste nitrile rubber (NBR) through devulcanization |
| title_full | Using a facile method to predict properties of recycled waste nitrile rubber (NBR) through devulcanization |
| title_fullStr | Using a facile method to predict properties of recycled waste nitrile rubber (NBR) through devulcanization |
| title_full_unstemmed | Using a facile method to predict properties of recycled waste nitrile rubber (NBR) through devulcanization |
| title_short | Using a facile method to predict properties of recycled waste nitrile rubber (NBR) through devulcanization |
| title_sort | using a facile method to predict properties of recycled waste nitrile rubber nbr through devulcanization |
| url | https://doi.org/10.1038/s41598-023-42438-x |
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