| Titre : |
Enhance slower relaxation process of poly(ethyl acrylate) through internal plasticization |
| Type de document : |
texte imprimé |
| Auteurs : |
X. R. He, Auteur ; H. Yu, Auteur ; R. Zhang, Auteur ; C.-H. Yang, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 419-424 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Analyse mécanique dynamique
Caoutchouc
Caractérisation
Composites à fibres de verre
Plastification
Polyacrylate d'éthyle
Relaxation moléculaire
Structure moléculaire
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
In this paper, we report a chemical way to resolve longer motions units in the glass-rubber transition region of poly (ethyl acrylate) (PEA), so called internal plasticization. The ethyl acrylate (EA) monomers were copolymerized with little amount of isoprene (IP) monomers. We propose that the single bonds adjunct to double bonds would have better flexible activity than usual single bonds, so the motion units located between two adjunct double bonds would be enhanced. The dynamic mechanical spectra of internally plasticized PEA (IPPEA) and PEA show that the tan ? of IPPEA is asymmetric, while the tan ? of PEA is symmetric. Furthermore, the results of 2D-DMAS show that the LSM, SRM and RM of IPPEA are located at 7 °C, 12 °C and 36 °C. The shoulder peak of tan ? of IPPEA at higher temperature side was confirmed that it contains sub-rouse mode (SRM) and rouse mode (RM). Thus, internal plasticization is an effective way to resolve modes above Tg. |
| Note de contenu : |
- Materials - Preparation
- Characterization of molecular weight and polydispersity
- Characterization of molecular structure
- Dynamic mechanical analysis
- Two-dimensional analysis |
| DOI : |
10.3139/217.2882 |
| En ligne : |
https://drive.google.com/file/d/1jgIOx1yPD2bjChffIfUDc7vllbL71YRd/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21740 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIX, N° 3 (07/2014) . - p. 419-424
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Enhance slower relaxation process of poly(ethyl acrylate) through internal plasticization in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 3 (07/2014)
