{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T21:31:31Z","timestamp":1790631091766,"version":"4.1.0"},"reference-count":46,"publisher":"AIP Publishing","issue":"3","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2008,1,21]]},"abstract":"<jats:p>We performed systematic temperature and concentration dependent measurements of the Soret coefficient in different associated binary mixtures of water, deuterated water, dimethyl sulfoxide (DMSO), methanol, ethanol, acetone, methanol, 1-propanol, 2-propanol, and propionaldehyde using the so-called thermal diffusion forced Rayleigh scattering method. For some of the associating binary mixtures such as ethanol\/water, acetone\/water, and DMSO\/water, the concentration xw\u00b1 at which the Soret coefficient changes its sign does not depend on temperature and is equal to the concentration xw\u00d7 where the Soret coefficient isotherms intersect. For others such as 1-propanol\/water, 2-propanol\/water, and ethanol\/DMSO, the sign change concentration is temperature dependent, which is the typical behavior observed for nonassociating mixtures. For systems with xw\u00b1=xw\u00d7, we found that xw\u00b1 depends linearly on the ratio of the vaporization enthalpies of the pure components. Probably due to the similarity of methanol and DMSO, we do not observe a sign change for this mixture. The obtained results are related to structural changes in the fluid observed by nuclear magnetic resonance, mass spectrometric, and x-ray experiments in the literature. Furthermore, we discuss the influence of hydrophilic and hydrophobic interactions and the solubility on thermal diffusion behavior.<\/jats:p>","DOI":"10.1063\/1.2819672","type":"journal-article","created":{"date-parts":[[2008,1,18]],"date-time":"2008-01-18T20:20:47Z","timestamp":1200687647000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":32,"title":["Systematic study of the thermal diffusion in associated mixtures"],"prefix":"10.1063","volume":"128","author":[{"given":"Pavel","family":"Polyakov","sequence":"first","affiliation":[{"name":"Forschungszentrum J\u00fclich GmbH IFF-Weiche Materie, , D-52428 J\u00fclich, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simone","family":"Wiegand","sequence":"additional","affiliation":[{"name":"Forschungszentrum J\u00fclich GmbH IFF-Weiche Materie, , D-52428 J\u00fclich, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2008,1,16]]},"reference":[{"key":"2023080206323908200_c1","doi-asserted-by":"publisher","first-page":"1561","DOI":"10.1021\/ma00173a022","volume":"20","year":"1987","journal-title":"Macromolecules"},{"key":"2023080206323908200_c2","first-page":"148","volume":"27","year":"1939","journal-title":"Naturwiss."},{"key":"2023080206323908200_c3","doi-asserted-by":"publisher","first-page":"31","DOI":"10.1351\/pac198557010031","volume":"57","year":"1885","journal-title":"Pure Appl. 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