Modification of poly(styrene‐b‐(ethylene‐co‐butylene)‐b‐styrene) via free‐radical grafting and its photo‐crosslinking
| Autor: | Jean-Jacques Robin, Marcos Batistella, Thomas Brossier, Arnaud Regazzi, Sébastien Blanquer, Nicolas Morand, J.M. Lopez-Cuesta, Agnès Harlay |
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| Přispěvatelé: | Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Polymères Composites et Hybrides (PCH - IMT Mines Alès), IMT - MINES ALES (IMT - MINES ALES), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), ARMOR, Durabilité des éco-Matériaux et Structures (DMS), Laboratoire de Mécanique et Génie Civil (LMGC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-IMT - MINES ALES (IMT - MINES ALES) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
thermoplastic elastomers
Ethylene Materials science Polymers and Plastics 4-vinyl-1-cyclohexene 1 02 engineering and technology 010402 general chemistry 01 natural sciences Styrene chemistry.chemical_compound [SPI]Engineering Sciences [physics] Polymer chemistry Photo crosslinking Materials Chemistry Thermoplastic elastomer technology industry and agriculture General Chemistry 021001 nanoscience & nanotechnology Grafting 0104 chemical sciences photo-crosslinking chemistry 0210 nano-technology 2-epoxide free-radical grafting poly(styrene-ethylene-butylene-styrene) SEBS |
| Zdroj: | Polymer Engineering and Science Polymer Engineering and Science, Wiley-Blackwell, 2021, 61 (12), p. 3082-3093. ⟨10.1002/pen.25820⟩ |
| ISSN: | 0032-3888 1548-2634 |
| DOI: | 10.1002/pen.25820⟩ |
| Popis: | International audience; Poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS) is functionalized via radical grafting with 4-vinyl-1-cyclohexene 1,2-epoxide (VCHO) initiated using 2,5-Bis(tert-butylperoxy)-2,5-dimethylhexane. The existence of the epoxide group on the SEBS backbone is evidenced by 1H nuclear magnetic resonance. A size exclusion chromatography (SEC) study reveals some chain coupling, and this phenomenon is limited by controlling the quantities of peroxide and monomer reagents used during the radical grafting. Photo-crosslinking of SEBS-g-VCHO under ultraviolet irradiation in the presence of a cationic initiator is then successfully performed with resultant gel contents higher than 85%. Mechanical properties of SEBS and crosslinked materials are measured by tensile tests on thin films. On the one hand, those tests reveal a significant increase of Young's modulus of the crosslinked materials. On the other hand, the diminution of elongation at break is much more limited; crosslinked materials retain their elastomeric properties with an elongation at break greater than 200%. Finally, the photosensitive SEBS-g-VCHO is used to show the adhesion performance of the photo-crosslinking coating as well as a resin for the stereolithography process. |
| Databáze: | OpenAIRE |
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