Influence of deformation temperature on structural variation and shape-memory effect of a thermoplastic semi-crystalline multiblock copolymer
A multiblock copolymer termed as PCL-PIBMD, consisting of crystallizable poly(ε-caprolactone) (PCL) segments and crystallizable poly(3S-isobutyl-morpholine-2,5-dione) (PIBMD) segments, has been reported as a material showing a thermally-induced shape-memory effect. While PIBMD crystalline domains ac...
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Budapest University of Technology and Economics
2015-07-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0005853&mi=cd |
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| author | W. Yan L. Fang U. Noechel K. Kratz A. Lendlein |
| author_facet | W. Yan L. Fang U. Noechel K. Kratz A. Lendlein |
| author_sort | W. Yan |
| collection | DOAJ |
| description | A multiblock copolymer termed as PCL-PIBMD, consisting of crystallizable poly(ε-caprolactone) (PCL) segments and crystallizable poly(3S-isobutyl-morpholine-2,5-dione) (PIBMD) segments, has been reported as a material showing a thermally-induced shape-memory effect. While PIBMD crystalline domains act as netpoints to determine the permanent shape, both PCL crystalline domains and PIBMD amorphous domains, which have similar transition temperatures (Ttrans) can act as switching domains. In this work, the influence of the deformation temperature (Tdeform = 50 or 20°C), which was above or below Ttrans, on the structural changes of PCL-PIBMD during uniaxial deformation and the shapememory properties were investigated. Furthermore, the relative contribution of crystalline PCL and PIBMD amorphous phases to the fixation of the temporary shape were distinguished by a toluene vapor treatment approach. The results indicated that at 50°C, both PCL and PIBMD amorphous phases can be orientated during deformation, resulting in thermallyinduced crystals of PCL domains and joint contribution to the switching domains. In contrast at 20°C, the temporary shape was mainly fixed by PCL crystals generated via strain-induced crystallization. |
| format | Article |
| id | doaj-art-1f49a4abc7a248fbb16e3d7e11bc7ea4 |
| institution | Kabale University |
| issn | 1788-618X |
| language | English |
| publishDate | 2015-07-01 |
| publisher | Budapest University of Technology and Economics |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj-art-1f49a4abc7a248fbb16e3d7e11bc7ea42025-08-20T03:32:50ZengBudapest University of Technology and EconomicseXPRESS Polymer Letters1788-618X2015-07-019762463510.3144/expresspolymlett.2015.58Influence of deformation temperature on structural variation and shape-memory effect of a thermoplastic semi-crystalline multiblock copolymerW. YanL. FangU. NoechelK. KratzA. LendleinA multiblock copolymer termed as PCL-PIBMD, consisting of crystallizable poly(ε-caprolactone) (PCL) segments and crystallizable poly(3S-isobutyl-morpholine-2,5-dione) (PIBMD) segments, has been reported as a material showing a thermally-induced shape-memory effect. While PIBMD crystalline domains act as netpoints to determine the permanent shape, both PCL crystalline domains and PIBMD amorphous domains, which have similar transition temperatures (Ttrans) can act as switching domains. In this work, the influence of the deformation temperature (Tdeform = 50 or 20°C), which was above or below Ttrans, on the structural changes of PCL-PIBMD during uniaxial deformation and the shapememory properties were investigated. Furthermore, the relative contribution of crystalline PCL and PIBMD amorphous phases to the fixation of the temporary shape were distinguished by a toluene vapor treatment approach. The results indicated that at 50°C, both PCL and PIBMD amorphous phases can be orientated during deformation, resulting in thermallyinduced crystals of PCL domains and joint contribution to the switching domains. In contrast at 20°C, the temporary shape was mainly fixed by PCL crystals generated via strain-induced crystallization.http://www.expresspolymlett.com/letolt.php?file=EPL-0005853&mi=cdBiodegradable polymersshape-memory polymermultiblock copolymerpolydepsipeptide |
| spellingShingle | W. Yan L. Fang U. Noechel K. Kratz A. Lendlein Influence of deformation temperature on structural variation and shape-memory effect of a thermoplastic semi-crystalline multiblock copolymer eXPRESS Polymer Letters Biodegradable polymers shape-memory polymer multiblock copolymer polydepsipeptide |
| title | Influence of deformation temperature on structural variation and shape-memory effect of a thermoplastic semi-crystalline multiblock copolymer |
| title_full | Influence of deformation temperature on structural variation and shape-memory effect of a thermoplastic semi-crystalline multiblock copolymer |
| title_fullStr | Influence of deformation temperature on structural variation and shape-memory effect of a thermoplastic semi-crystalline multiblock copolymer |
| title_full_unstemmed | Influence of deformation temperature on structural variation and shape-memory effect of a thermoplastic semi-crystalline multiblock copolymer |
| title_short | Influence of deformation temperature on structural variation and shape-memory effect of a thermoplastic semi-crystalline multiblock copolymer |
| title_sort | influence of deformation temperature on structural variation and shape memory effect of a thermoplastic semi crystalline multiblock copolymer |
| topic | Biodegradable polymers shape-memory polymer multiblock copolymer polydepsipeptide |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0005853&mi=cd |
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