Polyacrylamide-Based Block Copolymer Bearing Pyridine Groups Shows Unexpected Salt-Induced LCST Behavior
Thermal-responsive block copolymers are a special type of macromolecule that exhibit a wide range of applications in various fields. In this contribution, we report a new type of polyacrylamide-based block copolymer bearing pyridine groups of polyethylene glycol-block-poly(<i>N</i>-(2-me...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/7/2921 |
| _version_ | 1797607383656038400 |
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| author | Yunyun Tu Dandan Fang Wanli Zhan Zengming Wei Liming Yang Penghui Shao Xubiao Luo Guang Yang |
| author_facet | Yunyun Tu Dandan Fang Wanli Zhan Zengming Wei Liming Yang Penghui Shao Xubiao Luo Guang Yang |
| author_sort | Yunyun Tu |
| collection | DOAJ |
| description | Thermal-responsive block copolymers are a special type of macromolecule that exhibit a wide range of applications in various fields. In this contribution, we report a new type of polyacrylamide-based block copolymer bearing pyridine groups of polyethylene glycol-block-poly(<i>N</i>-(2-methylpyridine)-acrylamide; Px) that display distinct salt-induced lower critical solution temperature (LCST) behavior. Unexpectedly, the phase-transition mechanism of the salt-induced LCST behavior of Px block copolymers is different from that of the reported LCST-featured analogues. Moreover, their thermo-responsive behavior can be significantly regulated by several parameters such as salt species and concentration, urea, polymerization degree, polymer concentration and pH values. This unique thermal behavior of pyridine-containing block copolymers provides a new avenue for the fabrication of smart polymer materials with potential applications in biomedicine. |
| first_indexed | 2024-03-11T05:30:19Z |
| format | Article |
| id | doaj.art-0414eee45f644146baeba6b86dc93fb3 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T05:30:19Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-0414eee45f644146baeba6b86dc93fb32023-11-17T17:10:55ZengMDPI AGMolecules1420-30492023-03-01287292110.3390/molecules28072921Polyacrylamide-Based Block Copolymer Bearing Pyridine Groups Shows Unexpected Salt-Induced LCST BehaviorYunyun Tu0Dandan Fang1Wanli Zhan2Zengming Wei3Liming Yang4Penghui Shao5Xubiao Luo6Guang Yang7Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, ChinaBiomass Molecular Engineering Center, Anhui Agricultural University, Hefei 230036, ChinaBiomass Molecular Engineering Center, Anhui Agricultural University, Hefei 230036, ChinaBiomass Molecular Engineering Center, Anhui Agricultural University, Hefei 230036, ChinaKey Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, ChinaKey Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, ChinaKey Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, ChinaKey Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, ChinaThermal-responsive block copolymers are a special type of macromolecule that exhibit a wide range of applications in various fields. In this contribution, we report a new type of polyacrylamide-based block copolymer bearing pyridine groups of polyethylene glycol-block-poly(<i>N</i>-(2-methylpyridine)-acrylamide; Px) that display distinct salt-induced lower critical solution temperature (LCST) behavior. Unexpectedly, the phase-transition mechanism of the salt-induced LCST behavior of Px block copolymers is different from that of the reported LCST-featured analogues. Moreover, their thermo-responsive behavior can be significantly regulated by several parameters such as salt species and concentration, urea, polymerization degree, polymer concentration and pH values. This unique thermal behavior of pyridine-containing block copolymers provides a new avenue for the fabrication of smart polymer materials with potential applications in biomedicine.https://www.mdpi.com/1420-3049/28/7/2921thermo-responsiveblock-copolymerLCSTself-assemblynanomaterial |
| spellingShingle | Yunyun Tu Dandan Fang Wanli Zhan Zengming Wei Liming Yang Penghui Shao Xubiao Luo Guang Yang Polyacrylamide-Based Block Copolymer Bearing Pyridine Groups Shows Unexpected Salt-Induced LCST Behavior Molecules thermo-responsive block-copolymer LCST self-assembly nanomaterial |
| title | Polyacrylamide-Based Block Copolymer Bearing Pyridine Groups Shows Unexpected Salt-Induced LCST Behavior |
| title_full | Polyacrylamide-Based Block Copolymer Bearing Pyridine Groups Shows Unexpected Salt-Induced LCST Behavior |
| title_fullStr | Polyacrylamide-Based Block Copolymer Bearing Pyridine Groups Shows Unexpected Salt-Induced LCST Behavior |
| title_full_unstemmed | Polyacrylamide-Based Block Copolymer Bearing Pyridine Groups Shows Unexpected Salt-Induced LCST Behavior |
| title_short | Polyacrylamide-Based Block Copolymer Bearing Pyridine Groups Shows Unexpected Salt-Induced LCST Behavior |
| title_sort | polyacrylamide based block copolymer bearing pyridine groups shows unexpected salt induced lcst behavior |
| topic | thermo-responsive block-copolymer LCST self-assembly nanomaterial |
| url | https://www.mdpi.com/1420-3049/28/7/2921 |
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