Solvent Swelling-Induced Halogenation of Butyl Rubber Using Polychlorinated N-Alkanes: Structure and Properties
Traditional butyl rubber halogenation technology involves the halogenation of IIR using molecular chlorine or bromine in a solution. However, this method is technologically complex. This study investigated a novel method for the halogenation of butyl rubber to enhance its stability and resistance to...
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MDPI AG
2023-10-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/20/4137 |
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| author | Ksenia Valeriyevna Sukhareva Nikita Romanovich Sukharev Irina Ivanovna Levina Peter Ogbuna Offor Anatoly Anatolyevich Popov |
| author_facet | Ksenia Valeriyevna Sukhareva Nikita Romanovich Sukharev Irina Ivanovna Levina Peter Ogbuna Offor Anatoly Anatolyevich Popov |
| author_sort | Ksenia Valeriyevna Sukhareva |
| collection | DOAJ |
| description | Traditional butyl rubber halogenation technology involves the halogenation of IIR using molecular chlorine or bromine in a solution. However, this method is technologically complex. This study investigated a novel method for the halogenation of butyl rubber to enhance its stability and resistance to thermal oxidation and aggressive media. The butyl rubber was modified through mechanochemical modification, induced by solvent swelling in a polychlorinated n-alkane solution. During the modification, samples were obtained with chlorine content ranging from 3 to 15%. After extraction, the halogen content was quantitatively determined with the oxygen flask combustion method and X-ray photoelectron spectroscopy. It was shown that for samples with total chlorine content of up to 6%, there was almost no leaching of chlorine from the samples. The chemical structure of the extracted rubbers was ascertained using FT-IR and <sup>1</sup>H NMR spectroscopy, and it was demonstrated that all samples showed absorption peaks and signals typical for chlorobutyl rubbers. It was observed that modification with polychlorinated n-alkanes improved the thermal and oxidative stability (the oxygen absorption rate decreased by 40%) and chemical resistance, estimated by the degree of swelling, which decreased with the increase in the chlorine content. This technology allows the production of a chlorinated rubber solution that can be directly used by rubber goods manufacturers and suppliers. |
| first_indexed | 2024-03-10T20:57:00Z |
| format | Article |
| id | doaj.art-ccf021760dc84cbb90f391034e29af94 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T20:57:00Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-ccf021760dc84cbb90f391034e29af942023-11-19T17:51:43ZengMDPI AGPolymers2073-43602023-10-011520413710.3390/polym15204137Solvent Swelling-Induced Halogenation of Butyl Rubber Using Polychlorinated N-Alkanes: Structure and PropertiesKsenia Valeriyevna Sukhareva0Nikita Romanovich Sukharev1Irina Ivanovna Levina2Peter Ogbuna Offor3Anatoly Anatolyevich Popov4Higher School of Engineering, Plekhanov Russian University of Economics, 36 Stremyanny Ln, 117997 Moscow, RussiaInstitute of Biochemical Physics Named after N.M. Emanuel, Russian Academy of Sciences, 4 Kosygin St., 119991 Moscow, RussiaInstitute of Biochemical Physics Named after N.M. Emanuel, Russian Academy of Sciences, 4 Kosygin St., 119991 Moscow, RussiaMetallurgical and Materials Engineering Department, University of Nigeria, Nsukka 410001, NigeriaHigher School of Engineering, Plekhanov Russian University of Economics, 36 Stremyanny Ln, 117997 Moscow, RussiaTraditional butyl rubber halogenation technology involves the halogenation of IIR using molecular chlorine or bromine in a solution. However, this method is technologically complex. This study investigated a novel method for the halogenation of butyl rubber to enhance its stability and resistance to thermal oxidation and aggressive media. The butyl rubber was modified through mechanochemical modification, induced by solvent swelling in a polychlorinated n-alkane solution. During the modification, samples were obtained with chlorine content ranging from 3 to 15%. After extraction, the halogen content was quantitatively determined with the oxygen flask combustion method and X-ray photoelectron spectroscopy. It was shown that for samples with total chlorine content of up to 6%, there was almost no leaching of chlorine from the samples. The chemical structure of the extracted rubbers was ascertained using FT-IR and <sup>1</sup>H NMR spectroscopy, and it was demonstrated that all samples showed absorption peaks and signals typical for chlorobutyl rubbers. It was observed that modification with polychlorinated n-alkanes improved the thermal and oxidative stability (the oxygen absorption rate decreased by 40%) and chemical resistance, estimated by the degree of swelling, which decreased with the increase in the chlorine content. This technology allows the production of a chlorinated rubber solution that can be directly used by rubber goods manufacturers and suppliers.https://www.mdpi.com/2073-4360/15/20/4137halogenationbutyl rubberpolychlorinated n-alkanesmechanochemical modificationthermal and oxidative stabilitychemical resistance |
| spellingShingle | Ksenia Valeriyevna Sukhareva Nikita Romanovich Sukharev Irina Ivanovna Levina Peter Ogbuna Offor Anatoly Anatolyevich Popov Solvent Swelling-Induced Halogenation of Butyl Rubber Using Polychlorinated N-Alkanes: Structure and Properties Polymers halogenation butyl rubber polychlorinated n-alkanes mechanochemical modification thermal and oxidative stability chemical resistance |
| title | Solvent Swelling-Induced Halogenation of Butyl Rubber Using Polychlorinated N-Alkanes: Structure and Properties |
| title_full | Solvent Swelling-Induced Halogenation of Butyl Rubber Using Polychlorinated N-Alkanes: Structure and Properties |
| title_fullStr | Solvent Swelling-Induced Halogenation of Butyl Rubber Using Polychlorinated N-Alkanes: Structure and Properties |
| title_full_unstemmed | Solvent Swelling-Induced Halogenation of Butyl Rubber Using Polychlorinated N-Alkanes: Structure and Properties |
| title_short | Solvent Swelling-Induced Halogenation of Butyl Rubber Using Polychlorinated N-Alkanes: Structure and Properties |
| title_sort | solvent swelling induced halogenation of butyl rubber using polychlorinated n alkanes structure and properties |
| topic | halogenation butyl rubber polychlorinated n-alkanes mechanochemical modification thermal and oxidative stability chemical resistance |
| url | https://www.mdpi.com/2073-4360/15/20/4137 |
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