TPV: A New Insight on the Rubber Morphology and Mechanic/Elastic Properties
The objective of this work is to study the influence of the ratio between the elastomer (EPDM) phase and the thermoplastic phase (PP) in thermoplastic vulcanizates (TPVs) as well as the associated morphology of the compression set of the material. First, from a study of the literature, it is conclud...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-10-01
|
| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/12/10/2315 |
| _version_ | 1797551436351930368 |
|---|---|
| author | Cindy Le Hel Véronique Bounor-Legaré Mathilde Catherin Antoine Lucas Anthony Thèvenon Philippe Cassagnau |
| author_facet | Cindy Le Hel Véronique Bounor-Legaré Mathilde Catherin Antoine Lucas Anthony Thèvenon Philippe Cassagnau |
| author_sort | Cindy Le Hel |
| collection | DOAJ |
| description | The objective of this work is to study the influence of the ratio between the elastomer (EPDM) phase and the thermoplastic phase (PP) in thermoplastic vulcanizates (TPVs) as well as the associated morphology of the compression set of the material. First, from a study of the literature, it is concluded that the rubber phase must be dispersed with a large distribution of the domain size in the thermoplastic phase in order to achieve a high concentration, i.e., a maximal packing fraction close to ~0.80. From this discussion, it is inferred that a certain degree of progress in the crosslinking reaction must be reached when the thermoplastic phase is melted during mixing in order to achieve dispersion of the elastomeric phase in the thermoplastic matrix under maximum stress. In terms of elasticity recovery which is measured from the compression set experiment, it is observed that the crosslinking agent nature (DCP or phenolic resin) has no influence in the case of a TPV compared with a pure crosslinked EPDM system. Then, the TPV morphology and the rubber phase concentration are the first order parameters in the compression set of TPVs. Finally, the addition of carbon black fillers leads to an improvement of the mechanical properties at break for the low PP concentration (20%). However, the localization of carbon black depends on the crosslinking chemistry nature. With radical chemistry by organic peroxide decomposition, carbon black is located at the interface of EPDM and PP acting as a compatibilizer. |
| first_indexed | 2024-03-10T15:44:42Z |
| format | Article |
| id | doaj.art-c013c7acecee46cd8e8d644549027636 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T15:44:42Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-c013c7acecee46cd8e8d6445490276362023-11-20T16:34:19ZengMDPI AGPolymers2073-43602020-10-011210231510.3390/polym12102315TPV: A New Insight on the Rubber Morphology and Mechanic/Elastic PropertiesCindy Le Hel0Véronique Bounor-Legaré1Mathilde Catherin2Antoine Lucas3Anthony Thèvenon4Philippe Cassagnau5Univ-Lyon, Université Claude Bernard Lyon 1, Ingénierie des Matériaux Polymères, CNRS, UMR 5223, 15 Bd Latarjet, 69622 Villeurbanne CEDEX, FranceUniv-Lyon, Université Claude Bernard Lyon 1, Ingénierie des Matériaux Polymères, CNRS, UMR 5223, 15 Bd Latarjet, 69622 Villeurbanne CEDEX, FranceUniv-Lyon, Université Claude Bernard Lyon 1, Ingénierie des Matériaux Polymères, CNRS, UMR 5223, 15 Bd Latarjet, 69622 Villeurbanne CEDEX, FranceHutchinson, Centre de Recherche, Rue Gustave Nourry-B.P. 31, 45120-Chalette-sur-Loing, FranceHutchinson, Centre de Recherche, Rue Gustave Nourry-B.P. 31, 45120-Chalette-sur-Loing, FranceUniv-Lyon, Université Claude Bernard Lyon 1, Ingénierie des Matériaux Polymères, CNRS, UMR 5223, 15 Bd Latarjet, 69622 Villeurbanne CEDEX, FranceThe objective of this work is to study the influence of the ratio between the elastomer (EPDM) phase and the thermoplastic phase (PP) in thermoplastic vulcanizates (TPVs) as well as the associated morphology of the compression set of the material. First, from a study of the literature, it is concluded that the rubber phase must be dispersed with a large distribution of the domain size in the thermoplastic phase in order to achieve a high concentration, i.e., a maximal packing fraction close to ~0.80. From this discussion, it is inferred that a certain degree of progress in the crosslinking reaction must be reached when the thermoplastic phase is melted during mixing in order to achieve dispersion of the elastomeric phase in the thermoplastic matrix under maximum stress. In terms of elasticity recovery which is measured from the compression set experiment, it is observed that the crosslinking agent nature (DCP or phenolic resin) has no influence in the case of a TPV compared with a pure crosslinked EPDM system. Then, the TPV morphology and the rubber phase concentration are the first order parameters in the compression set of TPVs. Finally, the addition of carbon black fillers leads to an improvement of the mechanical properties at break for the low PP concentration (20%). However, the localization of carbon black depends on the crosslinking chemistry nature. With radical chemistry by organic peroxide decomposition, carbon black is located at the interface of EPDM and PP acting as a compatibilizer.https://www.mdpi.com/2073-4360/12/10/2315thermoplastic vulcanizatesmorphologycompression set |
| spellingShingle | Cindy Le Hel Véronique Bounor-Legaré Mathilde Catherin Antoine Lucas Anthony Thèvenon Philippe Cassagnau TPV: A New Insight on the Rubber Morphology and Mechanic/Elastic Properties Polymers thermoplastic vulcanizates morphology compression set |
| title | TPV: A New Insight on the Rubber Morphology and Mechanic/Elastic Properties |
| title_full | TPV: A New Insight on the Rubber Morphology and Mechanic/Elastic Properties |
| title_fullStr | TPV: A New Insight on the Rubber Morphology and Mechanic/Elastic Properties |
| title_full_unstemmed | TPV: A New Insight on the Rubber Morphology and Mechanic/Elastic Properties |
| title_short | TPV: A New Insight on the Rubber Morphology and Mechanic/Elastic Properties |
| title_sort | tpv a new insight on the rubber morphology and mechanic elastic properties |
| topic | thermoplastic vulcanizates morphology compression set |
| url | https://www.mdpi.com/2073-4360/12/10/2315 |
| work_keys_str_mv | AT cindylehel tpvanewinsightontherubbermorphologyandmechanicelasticproperties AT veroniquebounorlegare tpvanewinsightontherubbermorphologyandmechanicelasticproperties AT mathildecatherin tpvanewinsightontherubbermorphologyandmechanicelasticproperties AT antoinelucas tpvanewinsightontherubbermorphologyandmechanicelasticproperties AT anthonythevenon tpvanewinsightontherubbermorphologyandmechanicelasticproperties AT philippecassagnau tpvanewinsightontherubbermorphologyandmechanicelasticproperties |