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Molecular-weight dependent thermal diffusion in dilute polymer solutions
| hal.structure.identifier | Centre de physique moléculaire optique et hertzienne [CPMOH] | |
| dc.contributor.author | WÜRGER, Alois | |
| dc.date.issued | 2009-02-20 | |
| dc.identifier.issn | 0031-9007 | |
| dc.description.abstractEn | Thermal diffusion of long polymers is independent of the molecular weight M_{w}. Accounting for the molecular structure of the solvent, we derive an additional contribution of opposite sign which is significant for short chains but vanishes as M_{w}→∞. Our findings explain the dependence on M_{w} observed recently for polystyrene, and its inverse Soret effect at very small M_{w}. Moreover, they bridge the gap between the macroscopic hydrodynamics description for large solutes and the heat-of-transport picture for small molecules. | |
| dc.language.iso | en | |
| dc.publisher | American Physical Society | |
| dc.subject.en | thermal diffusion | |
| dc.subject.en | thermophoresis | |
| dc.subject.en | polymers | |
| dc.subject.en | non-equlibrium thermodynamics | |
| dc.subject.en | transport | |
| dc.title.en | Molecular-weight dependent thermal diffusion in dilute polymer solutions | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1103/PhysRevLett.102.078302 | |
| dc.subject.hal | Physique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft] | |
| bordeaux.journal | Physical Review Letters | |
| bordeaux.page | 078302 | |
| bordeaux.volume | 102 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00340147 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00340147v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Review%20Letters&rft.date=2009-02-20&rft.volume=102&rft.spage=078302&rft.epage=078302&rft.eissn=0031-9007&rft.issn=0031-9007&rft.au=W%C3%9CRGER,%20Alois&rft.genre=article |
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