Vapor pressure osmometry (original) (raw)
Die Dampfdruckosmometrie ist eine Technik zur Bestimmung der Molmasse makromolekularer Stoffe, die auf der Erniedrigung des partiellen Dampfdruckes des Lösungsmittels von Polymerlösungen im Vergleich zu dem des reinen Lösungsmittels beruht.
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| dbo:abstract | Die Dampfdruckosmometrie ist eine Technik zur Bestimmung der Molmasse makromolekularer Stoffe, die auf der Erniedrigung des partiellen Dampfdruckes des Lösungsmittels von Polymerlösungen im Vergleich zu dem des reinen Lösungsmittels beruht. (de) Vapor phase osmometry (VPO), also known as vapor-pressure osmometry, is an experimental technique for the determination of a polymer's number average molecular weight, Mn. It works by taking advantage of the decrease in vapor pressure that occurs when solutes are added to pure solvent. This technique can be used for polymers with a molecular weight of up to 20,000 though accuracy is best for those below 10,000. Although membrane osmometry is also based on the measurement of colligative properties, it has a lower bound of 25,000 for sample molecular weight that can be measured owing to problems with membrane permeation. (en) |
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| dbo:wikiPageRevisionID | 983807456 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Membrane_osmometer dbr:Matrix-assisted_laser_desorption/ionization dbc:Physical_chemistry dbr:Molar_mass_distribution |
| dct:subject | dbc:Physical_chemistry |
| gold:hypernym | dbr:Technique |
| rdf:type | dbo:TopicalConcept |
| rdfs:comment | Die Dampfdruckosmometrie ist eine Technik zur Bestimmung der Molmasse makromolekularer Stoffe, die auf der Erniedrigung des partiellen Dampfdruckes des Lösungsmittels von Polymerlösungen im Vergleich zu dem des reinen Lösungsmittels beruht. (de) Vapor phase osmometry (VPO), also known as vapor-pressure osmometry, is an experimental technique for the determination of a polymer's number average molecular weight, Mn. It works by taking advantage of the decrease in vapor pressure that occurs when solutes are added to pure solvent. This technique can be used for polymers with a molecular weight of up to 20,000 though accuracy is best for those below 10,000. Although membrane osmometry is also based on the measurement of colligative properties, it has a lower bound of 25,000 for sample molecular weight that can be measured owing to problems with membrane permeation. (en) |
| rdfs:label | Dampfdruckosmometrie (de) Vapor pressure osmometry (en) |
| owl:sameAs | freebase:Vapor pressure osmometry wikidata:Vapor pressure osmometry dbpedia-de:Vapor pressure osmometry https://global.dbpedia.org/id/CrCd |
| prov:wasDerivedFrom | wikipedia-en:Vapor_pressure_osmometry?oldid=983807456&ns=0 |
| foaf:isPrimaryTopicOf | wikipedia-en:Vapor_pressure_osmometry |
| is dbo:wikiPageDisambiguates of | dbr:VPO |
| is dbo:wikiPageWikiLink of | dbr:Osmometer dbr:Freezing_point_depression_osmometer dbr:Molar_mass_distribution dbr:VPO |
| is foaf:primaryTopic of | wikipedia-en:Vapor_pressure_osmometry |