The Influence of Long-Time Storage on the Structure and Properties of Multi-Block Thermoplastic Polyurethanes Based on Poly(butylene adipate) Diol and Polycaprolactone Diol
A series of semi-crystalline multi-block thermoplastic polyurethanes (TPU), containing poly(butylene adipate) (PBA), polycaprolactone (PCL) and their equimolar mixture (PBA/PCL) as a soft segment was synthesized. The changes in the physical-mechanical and thermal properties of the materials observed...
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MDPI AG
2023-01-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/2/818 |
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| author | Marina A. Gorbunova Denis V. Anokhin Ainur F. Abukaev Dimitri A. Ivanov |
| author_facet | Marina A. Gorbunova Denis V. Anokhin Ainur F. Abukaev Dimitri A. Ivanov |
| author_sort | Marina A. Gorbunova |
| collection | DOAJ |
| description | A series of semi-crystalline multi-block thermoplastic polyurethanes (TPU), containing poly(butylene adipate) (PBA), polycaprolactone (PCL) and their equimolar mixture (PBA/PCL) as a soft segment was synthesized. The changes in the physical-mechanical and thermal properties of the materials observed in the course of a 36-month storage at room temperature were related to the corresponding structural evolution. The latter was monitored using Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXS) and mechanical tests (tensile strength test). The effects of the composition of the soft segment on the phase separation and crystallization of the soft segment were analyzed in detail. It was found that the melting temperature of the crystalline phase increases with storage time, which is associated with hindering of the phase separation of the hard and soft segments of the TPU samples as it was detected by FTIR. |
| first_indexed | 2024-03-09T11:48:38Z |
| format | Article |
| id | doaj.art-a2d51226ac53429a98ec6fa4e89d03e5 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T11:48:38Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-a2d51226ac53429a98ec6fa4e89d03e52023-11-30T23:18:38ZengMDPI AGMaterials1996-19442023-01-0116281810.3390/ma16020818The Influence of Long-Time Storage on the Structure and Properties of Multi-Block Thermoplastic Polyurethanes Based on Poly(butylene adipate) Diol and Polycaprolactone DiolMarina A. Gorbunova0Denis V. Anokhin1Ainur F. Abukaev2Dimitri A. Ivanov3Laboratory of Structural Methods of Materials Investigation, National University of Science and Technology MISIS, Leninskiy Prospekt 4s1, 119049 Moscow, RussiaLaboratory of Structural Methods of Materials Investigation, National University of Science and Technology MISIS, Leninskiy Prospekt 4s1, 119049 Moscow, RussiaLaboratory of Structural Methods of Materials Investigation, National University of Science and Technology MISIS, Leninskiy Prospekt 4s1, 119049 Moscow, RussiaLaboratory of Structural Methods of Materials Investigation, National University of Science and Technology MISIS, Leninskiy Prospekt 4s1, 119049 Moscow, RussiaA series of semi-crystalline multi-block thermoplastic polyurethanes (TPU), containing poly(butylene adipate) (PBA), polycaprolactone (PCL) and their equimolar mixture (PBA/PCL) as a soft segment was synthesized. The changes in the physical-mechanical and thermal properties of the materials observed in the course of a 36-month storage at room temperature were related to the corresponding structural evolution. The latter was monitored using Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXS) and mechanical tests (tensile strength test). The effects of the composition of the soft segment on the phase separation and crystallization of the soft segment were analyzed in detail. It was found that the melting temperature of the crystalline phase increases with storage time, which is associated with hindering of the phase separation of the hard and soft segments of the TPU samples as it was detected by FTIR.https://www.mdpi.com/1996-1944/16/2/818thermoplastic polyurethaneshape memory materialslong-time crystallizationpolycaprolactonepoly(butylene adipate) |
| spellingShingle | Marina A. Gorbunova Denis V. Anokhin Ainur F. Abukaev Dimitri A. Ivanov The Influence of Long-Time Storage on the Structure and Properties of Multi-Block Thermoplastic Polyurethanes Based on Poly(butylene adipate) Diol and Polycaprolactone Diol Materials thermoplastic polyurethane shape memory materials long-time crystallization polycaprolactone poly(butylene adipate) |
| title | The Influence of Long-Time Storage on the Structure and Properties of Multi-Block Thermoplastic Polyurethanes Based on Poly(butylene adipate) Diol and Polycaprolactone Diol |
| title_full | The Influence of Long-Time Storage on the Structure and Properties of Multi-Block Thermoplastic Polyurethanes Based on Poly(butylene adipate) Diol and Polycaprolactone Diol |
| title_fullStr | The Influence of Long-Time Storage on the Structure and Properties of Multi-Block Thermoplastic Polyurethanes Based on Poly(butylene adipate) Diol and Polycaprolactone Diol |
| title_full_unstemmed | The Influence of Long-Time Storage on the Structure and Properties of Multi-Block Thermoplastic Polyurethanes Based on Poly(butylene adipate) Diol and Polycaprolactone Diol |
| title_short | The Influence of Long-Time Storage on the Structure and Properties of Multi-Block Thermoplastic Polyurethanes Based on Poly(butylene adipate) Diol and Polycaprolactone Diol |
| title_sort | influence of long time storage on the structure and properties of multi block thermoplastic polyurethanes based on poly butylene adipate diol and polycaprolactone diol |
| topic | thermoplastic polyurethane shape memory materials long-time crystallization polycaprolactone poly(butylene adipate) |
| url | https://www.mdpi.com/1996-1944/16/2/818 |
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