Polymerization Initiated by Graphite Intercalation Compounds Revisited: One-Pot Synthesis of Amphiphilic Pentablock Copolymers
This study reports the first attempt to employ a potassium–graphite intercalation compound (KC<sub>24</sub>) as an initiator for the one-pot synthesis of a multi-block copolymer. The results obtained show that KC<sub>24</sub> successfully initiated the copolymerization, leadi...
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-05-01
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| Series: | Macromol |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2673-6209/2/2/12 |
| _version_ | 1827659017795665920 |
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| author | Nikolay G. Vladimirov Ivan Gitsov |
| author_facet | Nikolay G. Vladimirov Ivan Gitsov |
| author_sort | Nikolay G. Vladimirov |
| collection | DOAJ |
| description | This study reports the first attempt to employ a potassium–graphite intercalation compound (KC<sub>24</sub>) as an initiator for the one-pot synthesis of a multi-block copolymer. The results obtained show that KC<sub>24</sub> successfully initiated the copolymerization, leading to a copolymer consisting of poly(styrene), poly(methyl methacrylate) and poly(ethylene oxide) blocks. When all three comonomers were introduced simultaneously or in a specific sequence, the resulting copolymers had molecular masses in the range between 170,000 Da and 280,000 Da. Their composition was investigated by size-exclusion chromatography with triple detection (dRI/UV/IR) and <sup>1</sup>H-NMR. The analyses indicated that all copolymers were enriched in methyl methacrylate (50–66 mol%) despite the fact that the comonomers were added in equimolar amounts. Due to the layered structure of the initiator, the polymerization took place in the graphite interlayer spaces and lead to extensive delamination, indicating at the potential to produce in situ graphite/copolymer composite materials. |
| first_indexed | 2024-03-09T23:13:40Z |
| format | Article |
| id | doaj.art-6c517304bda143dbae0a6352a59e5ae4 |
| institution | Directory Open Access Journal |
| issn | 2673-6209 |
| language | English |
| last_indexed | 2024-03-09T23:13:40Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Macromol |
| spelling | doaj.art-6c517304bda143dbae0a6352a59e5ae42023-11-23T17:40:06ZengMDPI AGMacromol2673-62092022-05-012218419310.3390/macromol2020012Polymerization Initiated by Graphite Intercalation Compounds Revisited: One-Pot Synthesis of Amphiphilic Pentablock CopolymersNikolay G. Vladimirov0Ivan Gitsov1Versogen, Inc., 200 Powder Mill Road, Wilmington, DE 19803, USADepartment of Chemistry, State University of New York–ESF, Syracuse, NY 13210, USAThis study reports the first attempt to employ a potassium–graphite intercalation compound (KC<sub>24</sub>) as an initiator for the one-pot synthesis of a multi-block copolymer. The results obtained show that KC<sub>24</sub> successfully initiated the copolymerization, leading to a copolymer consisting of poly(styrene), poly(methyl methacrylate) and poly(ethylene oxide) blocks. When all three comonomers were introduced simultaneously or in a specific sequence, the resulting copolymers had molecular masses in the range between 170,000 Da and 280,000 Da. Their composition was investigated by size-exclusion chromatography with triple detection (dRI/UV/IR) and <sup>1</sup>H-NMR. The analyses indicated that all copolymers were enriched in methyl methacrylate (50–66 mol%) despite the fact that the comonomers were added in equimolar amounts. Due to the layered structure of the initiator, the polymerization took place in the graphite interlayer spaces and lead to extensive delamination, indicating at the potential to produce in situ graphite/copolymer composite materials.https://www.mdpi.com/2673-6209/2/2/12graphite intercalation compoundsanionic polymerizationblock copolymers |
| spellingShingle | Nikolay G. Vladimirov Ivan Gitsov Polymerization Initiated by Graphite Intercalation Compounds Revisited: One-Pot Synthesis of Amphiphilic Pentablock Copolymers Macromol graphite intercalation compounds anionic polymerization block copolymers |
| title | Polymerization Initiated by Graphite Intercalation Compounds Revisited: One-Pot Synthesis of Amphiphilic Pentablock Copolymers |
| title_full | Polymerization Initiated by Graphite Intercalation Compounds Revisited: One-Pot Synthesis of Amphiphilic Pentablock Copolymers |
| title_fullStr | Polymerization Initiated by Graphite Intercalation Compounds Revisited: One-Pot Synthesis of Amphiphilic Pentablock Copolymers |
| title_full_unstemmed | Polymerization Initiated by Graphite Intercalation Compounds Revisited: One-Pot Synthesis of Amphiphilic Pentablock Copolymers |
| title_short | Polymerization Initiated by Graphite Intercalation Compounds Revisited: One-Pot Synthesis of Amphiphilic Pentablock Copolymers |
| title_sort | polymerization initiated by graphite intercalation compounds revisited one pot synthesis of amphiphilic pentablock copolymers |
| topic | graphite intercalation compounds anionic polymerization block copolymers |
| url | https://www.mdpi.com/2673-6209/2/2/12 |
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