| Téléchargement | - Voir le manuscrit accepté : Influence of the solvent quality on ring polymer dimensions (PDF, 992 Kio)
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| DOI | Trouver le DOI : https://doi.org/10.1021/ma502518p |
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| Auteur | Rechercher : Gooßen, Sebastian; Rechercher : Brás, Ana R.; Rechercher : Pyckhout-Hintzen, Wim; Rechercher : Wischnewski, Andreas; Rechercher : Richter, Dieter; Rechercher : Rubinstein, Michael; Rechercher : Roovers, Jacques1; Rechercher : Lutz, Pierre J.; Rechercher : Jeong, Youncheol; Rechercher : Chang, Taihyun; Rechercher : Vlassopoulos, Dimitris |
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| Affiliation | - Conseil national de recherches du Canada. Institut des sciences des microstructures du CNRC
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| Format | Texte, Article |
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| Sujet | Approximation theory; Chains; Dynamic light scattering; Light scattering; Nanocomposites; Neutron scattering; Polymers; Dilute solution; Linear polymers; Ring dimension; Ring polymers; Role of solvents; Solution preparations; Solvent conditions; Solvent quality; Solvents |
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| Résumé | We present a systematic investigation of well-characterized, experimentally pure polystyrene (PS) rings with molar mass of 161000 g/mol in dilute solutions. We measure the ring form factor at θ- and good-solvent conditions as well as in a polymeric solvent (linear PS of roughly comparable molar mass) by means of small-angle neutron scattering (SANS). Additional dynamic light scattering (DLS) measurements support the SANS data and help elucidate the role of solvent quality and solution preparation. The results indicate the increase of ring dimensions as the solvent quality improves. Furthermore, the experimental form factors in both θ-solvent and linear matrix behave as ideal rings and are fully superimposable. The nearly Gaussian conformations of rings in a melt of linear chains provide evidence of threading of linear chains through rings. The latter result has implications for the dynamics of ring-linear polymer mixtures. |
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| Date de publication | 2015-02-23 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21275750 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 202dd2db-3271-45e3-8c33-613a38203f1b |
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| Enregistrement créé | 2015-07-14 |
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| Enregistrement modifié | 2020-06-04 |
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