Evaluation of Effective Crosslinking Density for Pseudo-Semi Interpenetrating Polymer Networks Based on Polyether Glycols Mixture by Dynamic Mechanical Analysis
Pseudo-semi interpenetrating polymer networks (pseudo-semi IPNs) are a special example of topological isomerism in macromolecules, which have attracted significant attention in recent years with a high potential in a variety of engineering applications of polymeric materials. In this article, pseudo...
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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/2073-4360/15/1/226 |
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| author | Yajin Li Bingbing Sun Yunfei Liu Zhengzhong Zhang Yupeng Shen Haiyang Wang Xiaojun Liu Wuxi Xie |
| author_facet | Yajin Li Bingbing Sun Yunfei Liu Zhengzhong Zhang Yupeng Shen Haiyang Wang Xiaojun Liu Wuxi Xie |
| author_sort | Yajin Li |
| collection | DOAJ |
| description | Pseudo-semi interpenetrating polymer networks (pseudo-semi IPNs) are a special example of topological isomerism in macromolecules, which have attracted significant attention in recent years with a high potential in a variety of engineering applications of polymeric materials. In this article, pseudo-semi IPNs were synthetized by sequential polymerization of thermoplastic polymers (TPEs) in the presence of thermosetting elastomer (TSEs) with contents of 10, 20, 30, 40 and 50 wt.% in a vacuum oven at 60 °C for about 72 h. In addition, this article describes a method for researching the elastic modulus, effective crosslinking density and physical crosslinking density of TSEs and pseudo-semi IPNs. The inherent interactions and entanglements of pseudo-semi IPNs were discussed by analyzing the changes in elastic modulus and effective crosslinking density at different temperatures. The results show that after the TPE was added to the TSE matrix as a plastic-reinforced material, the ductility increased from 89.6% to 491%, the effective crosslinking density was increased by 100% at high temperatures and the strength of the material matrix was significantly improved. Two physical events take place in our pseudo-semi IPNs as result of energy dissipation and polymeric chains mobility. |
| first_indexed | 2024-03-09T12:00:18Z |
| format | Article |
| id | doaj.art-1c429ea8d9af4c79ad9656177dfdf9f7 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T12:00:18Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-1c429ea8d9af4c79ad9656177dfdf9f72023-11-30T23:04:35ZengMDPI AGPolymers2073-43602023-01-0115122610.3390/polym15010226Evaluation of Effective Crosslinking Density for Pseudo-Semi Interpenetrating Polymer Networks Based on Polyether Glycols Mixture by Dynamic Mechanical AnalysisYajin Li0Bingbing Sun1Yunfei Liu2Zhengzhong Zhang3Yupeng Shen4Haiyang Wang5Xiaojun Liu6Wuxi Xie7Xi’an Modern Chemistry Research Institute, 710065 Xi’an, ChinaXi’an Modern Chemistry Research Institute, 710065 Xi’an, ChinaXi’an Modern Chemistry Research Institute, 710065 Xi’an, ChinaXi’an Modern Chemistry Research Institute, 710065 Xi’an, ChinaXi’an Modern Chemistry Research Institute, 710065 Xi’an, ChinaXi’an Modern Chemistry Research Institute, 710065 Xi’an, ChinaXi’an Modern Chemistry Research Institute, 710065 Xi’an, ChinaXi’an Modern Chemistry Research Institute, 710065 Xi’an, ChinaPseudo-semi interpenetrating polymer networks (pseudo-semi IPNs) are a special example of topological isomerism in macromolecules, which have attracted significant attention in recent years with a high potential in a variety of engineering applications of polymeric materials. In this article, pseudo-semi IPNs were synthetized by sequential polymerization of thermoplastic polymers (TPEs) in the presence of thermosetting elastomer (TSEs) with contents of 10, 20, 30, 40 and 50 wt.% in a vacuum oven at 60 °C for about 72 h. In addition, this article describes a method for researching the elastic modulus, effective crosslinking density and physical crosslinking density of TSEs and pseudo-semi IPNs. The inherent interactions and entanglements of pseudo-semi IPNs were discussed by analyzing the changes in elastic modulus and effective crosslinking density at different temperatures. The results show that after the TPE was added to the TSE matrix as a plastic-reinforced material, the ductility increased from 89.6% to 491%, the effective crosslinking density was increased by 100% at high temperatures and the strength of the material matrix was significantly improved. Two physical events take place in our pseudo-semi IPNs as result of energy dissipation and polymeric chains mobility.https://www.mdpi.com/2073-4360/15/1/226pseudo-semi IPNTPETSEelastic moduluseffective crosslinking density |
| spellingShingle | Yajin Li Bingbing Sun Yunfei Liu Zhengzhong Zhang Yupeng Shen Haiyang Wang Xiaojun Liu Wuxi Xie Evaluation of Effective Crosslinking Density for Pseudo-Semi Interpenetrating Polymer Networks Based on Polyether Glycols Mixture by Dynamic Mechanical Analysis Polymers pseudo-semi IPN TPE TSE elastic modulus effective crosslinking density |
| title | Evaluation of Effective Crosslinking Density for Pseudo-Semi Interpenetrating Polymer Networks Based on Polyether Glycols Mixture by Dynamic Mechanical Analysis |
| title_full | Evaluation of Effective Crosslinking Density for Pseudo-Semi Interpenetrating Polymer Networks Based on Polyether Glycols Mixture by Dynamic Mechanical Analysis |
| title_fullStr | Evaluation of Effective Crosslinking Density for Pseudo-Semi Interpenetrating Polymer Networks Based on Polyether Glycols Mixture by Dynamic Mechanical Analysis |
| title_full_unstemmed | Evaluation of Effective Crosslinking Density for Pseudo-Semi Interpenetrating Polymer Networks Based on Polyether Glycols Mixture by Dynamic Mechanical Analysis |
| title_short | Evaluation of Effective Crosslinking Density for Pseudo-Semi Interpenetrating Polymer Networks Based on Polyether Glycols Mixture by Dynamic Mechanical Analysis |
| title_sort | evaluation of effective crosslinking density for pseudo semi interpenetrating polymer networks based on polyether glycols mixture by dynamic mechanical analysis |
| topic | pseudo-semi IPN TPE TSE elastic modulus effective crosslinking density |
| url | https://www.mdpi.com/2073-4360/15/1/226 |
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