| Download | - View accepted manuscript: Influence of the solvent quality on ring polymer dimensions (PDF, 992 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1021/ma502518p |
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| Author | Search for: Gooßen, Sebastian; Search for: Brás, Ana R.; Search for: Pyckhout-Hintzen, Wim; Search for: Wischnewski, Andreas; Search for: Richter, Dieter; Search for: Rubinstein, Michael; Search for: Roovers, Jacques1; Search for: Lutz, Pierre J.; Search for: Jeong, Youncheol; Search for: Chang, Taihyun; Search for: Vlassopoulos, Dimitris |
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| Affiliation | - National Research Council of Canada. NRC Institute for Microstructural Sciences
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| Format | Text, Article |
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| Subject | 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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| Abstract | 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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| Publication date | 2015-02-23 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21275750 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 202dd2db-3271-45e3-8c33-613a38203f1b |
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| Record created | 2015-07-14 |
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| Record modified | 2020-06-04 |
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