Matches in SemOpenAlex for { <https://semopenalex.org/work/W4210372014> ?p ?o ?g. }
Showing items 1 to 79 of
79
with 100 items per page.
- W4210372014 endingPage "110250" @default.
- W4210372014 startingPage "110250" @default.
- W4210372014 abstract "Pour point depressant (PPD) activity mechanisms include solubilization, morphology alteration, and steric/entropic repulsion. A wealth of complex intermolecular interactions governs PPD efficacies in real crude compositions. The current study utilizes single-component model waxes (n-C24H50, n-C28H58, n-C32H66 or n-C36H74) dissolved in dodecane to reveal chain-length dependent PPD efficacies. Wax appearance temperature depression, effected by PPD, diminishes as paraffin chain-length increases. Stronger London van der Waals attractions between longer wax components effectively diminish PPD solubilization activity. Controlled-temperature centrifugation reveals partitioning of PPD polymers and paraffin waxes between solid and liquid phases. PPD polymers typically contain a polydisperse molecular weight distribution. The highest molecular weight PPD polymers partition preferentially to solid phases, including PPD aggregates and PPD-modified wax crystals. The lowest molecular weight PPD polymers remain preferentially soluble in the liquid phase, binding only weakly to precipitated wax. The presence of precipitated wax counteracts the solubilization activity of PPD polymer. At high precipitated wax fractions, PPD shows no wax solubilization activity. As the precipitated wax fraction decreases, the wax solubilization activity of the PPD progressively increases. The wax solubilization activity of the PPD attains a maximum at the WAT. Finally, the results are consistent with a single optimal polymer molecular weight for PPD activity occurring at a single temperature. PPD polymers larger than the optimal MW undergo a coil-to-globule transition prior to wax crystallization, deactivating the polymer. Polymers smaller than the optimal molecular weight show weaker binding to wax crystals, consistent with a smaller Gibbs free energy of binding, and partition preferentially to the liquid phase. Modern PPD formulations should utilize polymers that are tailored according to molecular weight. Optimally tailored PPD polymers should be less polydisperse in nature than current PPD formulations." @default.
- W4210372014 created "2022-02-08" @default.
- W4210372014 creator A5032800754 @default.
- W4210372014 creator A5051932376 @default.
- W4210372014 creator A5088775498 @default.
- W4210372014 date "2022-05-01" @default.
- W4210372014 modified "2023-10-10" @default.
- W4210372014 title "Pour point depressant efficacy as a function of paraffin chain-length" @default.
- W4210372014 cites W1965267978 @default.
- W4210372014 cites W1981103881 @default.
- W4210372014 cites W1993492309 @default.
- W4210372014 cites W2001265681 @default.
- W4210372014 cites W2018434268 @default.
- W4210372014 cites W2018562341 @default.
- W4210372014 cites W2020648845 @default.
- W4210372014 cites W2029810557 @default.
- W4210372014 cites W2032655850 @default.
- W4210372014 cites W2033835780 @default.
- W4210372014 cites W2039633813 @default.
- W4210372014 cites W2041432924 @default.
- W4210372014 cites W2049954767 @default.
- W4210372014 cites W2083401272 @default.
- W4210372014 cites W2084370387 @default.
- W4210372014 cites W2093456692 @default.
- W4210372014 cites W2126795303 @default.
- W4210372014 cites W2791719075 @default.
- W4210372014 cites W2912368702 @default.
- W4210372014 cites W4300759586 @default.
- W4210372014 doi "https://doi.org/10.1016/j.petrol.2022.110250" @default.
- W4210372014 hasPublicationYear "2022" @default.
- W4210372014 type Work @default.
- W4210372014 citedByCount "8" @default.
- W4210372014 countsByYear W42103720142023 @default.
- W4210372014 crossrefType "journal-article" @default.
- W4210372014 hasAuthorship W4210372014A5032800754 @default.
- W4210372014 hasAuthorship W4210372014A5051932376 @default.
- W4210372014 hasAuthorship W4210372014A5088775498 @default.
- W4210372014 hasBestOaLocation W42103720141 @default.
- W4210372014 hasConcept C13530604 @default.
- W4210372014 hasConcept C153033020 @default.
- W4210372014 hasConcept C158117686 @default.
- W4210372014 hasConcept C178790620 @default.
- W4210372014 hasConcept C185592680 @default.
- W4210372014 hasConcept C188027245 @default.
- W4210372014 hasConcept C21582691 @default.
- W4210372014 hasConcept C2778927798 @default.
- W4210372014 hasConcept C43617362 @default.
- W4210372014 hasConcept C521977710 @default.
- W4210372014 hasConcept C69304742 @default.
- W4210372014 hasConceptScore W4210372014C13530604 @default.
- W4210372014 hasConceptScore W4210372014C153033020 @default.
- W4210372014 hasConceptScore W4210372014C158117686 @default.
- W4210372014 hasConceptScore W4210372014C178790620 @default.
- W4210372014 hasConceptScore W4210372014C185592680 @default.
- W4210372014 hasConceptScore W4210372014C188027245 @default.
- W4210372014 hasConceptScore W4210372014C21582691 @default.
- W4210372014 hasConceptScore W4210372014C2778927798 @default.
- W4210372014 hasConceptScore W4210372014C43617362 @default.
- W4210372014 hasConceptScore W4210372014C521977710 @default.
- W4210372014 hasConceptScore W4210372014C69304742 @default.
- W4210372014 hasLocation W42103720141 @default.
- W4210372014 hasOpenAccess W4210372014 @default.
- W4210372014 hasPrimaryLocation W42103720141 @default.
- W4210372014 hasRelatedWork W2008509632 @default.
- W4210372014 hasRelatedWork W2014276103 @default.
- W4210372014 hasRelatedWork W2152447294 @default.
- W4210372014 hasRelatedWork W2353541917 @default.
- W4210372014 hasRelatedWork W2370205577 @default.
- W4210372014 hasRelatedWork W2379720450 @default.
- W4210372014 hasRelatedWork W2380379835 @default.
- W4210372014 hasRelatedWork W3152719204 @default.
- W4210372014 hasRelatedWork W4210372014 @default.
- W4210372014 hasRelatedWork W2490598758 @default.
- W4210372014 hasVolume "212" @default.
- W4210372014 isParatext "false" @default.
- W4210372014 isRetracted "false" @default.
- W4210372014 workType "article" @default.