Melt‐Processable and Electrospinnable Shape‐Memory Hydrogels
Abstract Due to their ability to adapt to subtle changes in response to various external and internal stimuli, smart hydrogels have become increasingly popular in research and industry. However, many currently available hydrogels suffer from poor processability and inferior mechanical properties. Fo...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2024-12-01
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| Series: | Macromolecular Materials and Engineering |
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| Online Access: | https://doi.org/10.1002/mame.202400166 |
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| author | Turdimuhammad Abdullah Cagatay Altınkok Oguz Okay |
| author_facet | Turdimuhammad Abdullah Cagatay Altınkok Oguz Okay |
| author_sort | Turdimuhammad Abdullah |
| collection | DOAJ |
| description | Abstract Due to their ability to adapt to subtle changes in response to various external and internal stimuli, smart hydrogels have become increasingly popular in research and industry. However, many currently available hydrogels suffer from poor processability and inferior mechanical properties. For example, the preparation of a hydrogel network that can be subjected to melt processing and electrospinning is challenging. Herein, a series of mechanically strong, shape‐memory hydrogels based on polyacrylic acid (PAAc) chains containing 20–50 mol% of crystallizable n‐octadecylacrylate (C18A) segments are prepared by an organosolv method followed by in situ physical cross‐linking via hydrophobic interactions. The hydrogels exhibit a reversible strong to weak gel transition at 50–60 °C and can be melt‐processed at 60–100 °C, depending on the molar fraction of C18A. Additionally, the hydrogels can be dissolved in chloroform/ethanol mixture to form a viscous solution, which can then be used to produce a nanofibrous network by electrospinning. Effects of polymer concentration, volume ratio of solvents, and mole fraction of C18A on electrospinning are investigated to produce smooth, uniform nanofibers with small fiber diameter. The produced nanofibers, while maintaining their chemical structure, show significantly improved water adsorption capacity, enhanced mechanical properties, and fast shape‐memory performance. |
| format | Article |
| id | doaj-art-e34c3abf946c4417b14f44af605ec630 |
| institution | Kabale University |
| issn | 1438-7492 1439-2054 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Macromolecular Materials and Engineering |
| spelling | doaj-art-e34c3abf946c4417b14f44af605ec6302024-12-17T01:22:03ZengWiley-VCHMacromolecular Materials and Engineering1438-74921439-20542024-12-0130912n/an/a10.1002/mame.202400166Melt‐Processable and Electrospinnable Shape‐Memory HydrogelsTurdimuhammad Abdullah0Cagatay Altınkok1Oguz Okay2Department of Chemistry Istanbul Technical University Maslak Istanbul 34469 TurkeyDepartment of Chemistry Istanbul Technical University Maslak Istanbul 34469 TurkeyDepartment of Chemistry Istanbul Technical University Maslak Istanbul 34469 TurkeyAbstract Due to their ability to adapt to subtle changes in response to various external and internal stimuli, smart hydrogels have become increasingly popular in research and industry. However, many currently available hydrogels suffer from poor processability and inferior mechanical properties. For example, the preparation of a hydrogel network that can be subjected to melt processing and electrospinning is challenging. Herein, a series of mechanically strong, shape‐memory hydrogels based on polyacrylic acid (PAAc) chains containing 20–50 mol% of crystallizable n‐octadecylacrylate (C18A) segments are prepared by an organosolv method followed by in situ physical cross‐linking via hydrophobic interactions. The hydrogels exhibit a reversible strong to weak gel transition at 50–60 °C and can be melt‐processed at 60–100 °C, depending on the molar fraction of C18A. Additionally, the hydrogels can be dissolved in chloroform/ethanol mixture to form a viscous solution, which can then be used to produce a nanofibrous network by electrospinning. Effects of polymer concentration, volume ratio of solvents, and mole fraction of C18A on electrospinning are investigated to produce smooth, uniform nanofibers with small fiber diameter. The produced nanofibers, while maintaining their chemical structure, show significantly improved water adsorption capacity, enhanced mechanical properties, and fast shape‐memory performance.https://doi.org/10.1002/mame.202400166electrospinninghydrophobic interactionmelt‐processabilitypolyacrylic acidshape‐memory hydrogels |
| spellingShingle | Turdimuhammad Abdullah Cagatay Altınkok Oguz Okay Melt‐Processable and Electrospinnable Shape‐Memory Hydrogels Macromolecular Materials and Engineering electrospinning hydrophobic interaction melt‐processability polyacrylic acid shape‐memory hydrogels |
| title | Melt‐Processable and Electrospinnable Shape‐Memory Hydrogels |
| title_full | Melt‐Processable and Electrospinnable Shape‐Memory Hydrogels |
| title_fullStr | Melt‐Processable and Electrospinnable Shape‐Memory Hydrogels |
| title_full_unstemmed | Melt‐Processable and Electrospinnable Shape‐Memory Hydrogels |
| title_short | Melt‐Processable and Electrospinnable Shape‐Memory Hydrogels |
| title_sort | melt processable and electrospinnable shape memory hydrogels |
| topic | electrospinning hydrophobic interaction melt‐processability polyacrylic acid shape‐memory hydrogels |
| url | https://doi.org/10.1002/mame.202400166 |
| work_keys_str_mv | AT turdimuhammadabdullah meltprocessableandelectrospinnableshapememoryhydrogels AT cagatayaltınkok meltprocessableandelectrospinnableshapememoryhydrogels AT oguzokay meltprocessableandelectrospinnableshapememoryhydrogels |