Polyurethane Glycerolysate as a Modifier of the Properties of Natural Rubber Mixtures and Vulcanizates
Chemical recycling of polyurethanes can be realized in several different ways, but the most important methods are glycolysis and glycerolysis. Both methods permit recovery of polyols (when the process is realized with the mass excess of depolymerizing agent) or substitutes of polyols, which contain...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/17/1/62 |
| _version_ | 1797358568857403392 |
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| author | Marcin Włoch Maksymilian Toruńczak Janusz Datta |
| author_facet | Marcin Włoch Maksymilian Toruńczak Janusz Datta |
| author_sort | Marcin Włoch |
| collection | DOAJ |
| description | Chemical recycling of polyurethanes can be realized in several different ways, but the most important methods are glycolysis and glycerolysis. Both methods permit recovery of polyols (when the process is realized with the mass excess of depolymerizing agent) or substitutes of polyols, which contain urethane moieties in the main chains and terminate mainly in hydroxyl groups (when the process is realized with the mass excess of depolymerized polyurethane). Oligomeric products with urethane groups in the chemical structure can also be used as modifiers of rubber mixtures and vulcanizates. The main aim of the presented work is to study the effect of polyurethane glycerolysate on the performance of natural rubber mixtures and vulcanizates. The influence of the modifier on the vulcanization kinetics and swelling of rubber mixtures, and the thermo-mechanical and mechanical properties of rubber vulcanizates, was studied. The prepared materials were also subjected to accelerated thermal aging in air. It was found that polyurethane glycerolysate affects the vulcanization process of rubber mixtures (for example, promotes the activation of vulcanization) and acts as an antidegradant under thermoxidative conditions (higher stability of mechanical properties was observed in comparison to a reference sample without modifier). The obtained results show that chemical recycling products can be valuable modifiers of natural rubber mixtures and vulcanizates, which extends the possible applications of polyurethane chemical recycling products. |
| first_indexed | 2024-03-08T15:03:54Z |
| format | Article |
| id | doaj.art-f58cc9d8174c4607b1b554d803abc872 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-08T15:03:54Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-f58cc9d8174c4607b1b554d803abc8722024-01-10T15:02:24ZengMDPI AGMaterials1996-19442023-12-011716210.3390/ma17010062Polyurethane Glycerolysate as a Modifier of the Properties of Natural Rubber Mixtures and VulcanizatesMarcin Włoch0Maksymilian Toruńczak1Janusz Datta2Department of Polymers Technology, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza Str. 11/12, 80-233 Gdańsk, PolandDepartment of Polymers Technology, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza Str. 11/12, 80-233 Gdańsk, PolandDepartment of Polymers Technology, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza Str. 11/12, 80-233 Gdańsk, PolandChemical recycling of polyurethanes can be realized in several different ways, but the most important methods are glycolysis and glycerolysis. Both methods permit recovery of polyols (when the process is realized with the mass excess of depolymerizing agent) or substitutes of polyols, which contain urethane moieties in the main chains and terminate mainly in hydroxyl groups (when the process is realized with the mass excess of depolymerized polyurethane). Oligomeric products with urethane groups in the chemical structure can also be used as modifiers of rubber mixtures and vulcanizates. The main aim of the presented work is to study the effect of polyurethane glycerolysate on the performance of natural rubber mixtures and vulcanizates. The influence of the modifier on the vulcanization kinetics and swelling of rubber mixtures, and the thermo-mechanical and mechanical properties of rubber vulcanizates, was studied. The prepared materials were also subjected to accelerated thermal aging in air. It was found that polyurethane glycerolysate affects the vulcanization process of rubber mixtures (for example, promotes the activation of vulcanization) and acts as an antidegradant under thermoxidative conditions (higher stability of mechanical properties was observed in comparison to a reference sample without modifier). The obtained results show that chemical recycling products can be valuable modifiers of natural rubber mixtures and vulcanizates, which extends the possible applications of polyurethane chemical recycling products.https://www.mdpi.com/1996-1944/17/1/62natural rubberchemical recyclingpolyurethane glycerolysatemodifiervulcanization kineticsmechanical properties |
| spellingShingle | Marcin Włoch Maksymilian Toruńczak Janusz Datta Polyurethane Glycerolysate as a Modifier of the Properties of Natural Rubber Mixtures and Vulcanizates Materials natural rubber chemical recycling polyurethane glycerolysate modifier vulcanization kinetics mechanical properties |
| title | Polyurethane Glycerolysate as a Modifier of the Properties of Natural Rubber Mixtures and Vulcanizates |
| title_full | Polyurethane Glycerolysate as a Modifier of the Properties of Natural Rubber Mixtures and Vulcanizates |
| title_fullStr | Polyurethane Glycerolysate as a Modifier of the Properties of Natural Rubber Mixtures and Vulcanizates |
| title_full_unstemmed | Polyurethane Glycerolysate as a Modifier of the Properties of Natural Rubber Mixtures and Vulcanizates |
| title_short | Polyurethane Glycerolysate as a Modifier of the Properties of Natural Rubber Mixtures and Vulcanizates |
| title_sort | polyurethane glycerolysate as a modifier of the properties of natural rubber mixtures and vulcanizates |
| topic | natural rubber chemical recycling polyurethane glycerolysate modifier vulcanization kinetics mechanical properties |
| url | https://www.mdpi.com/1996-1944/17/1/62 |
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