FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1972996817> ?p ?o ?g. }

• W1972996817 endingPage "252" @default.
• W1972996817 startingPage "229" @default.
• W1972996817 abstract "Continuous thermodynamics is a framework which combines continuum modeling for the compositions of complex and multicomponent mixtures with molecular thermodynamic models and efficient numerical methods. In this work, a generalized molecular-thermodynamic model for polydisperse polymer solutions is developed; it is formally similar to the classical Flory-Huggins theory but with a polymer-size dependent and polymer-concentration dependent Flory parameter. Most existing lattice models and equation-of-state models such as the Guggenheim, Orifino-Flory, Koningsveld-Kleintjens, Sanchez-Lacombe and Revised Freed models can be cast into this generalized model but with different polymer-size and polymer-concentration dependence for the Flory parameter. A generalized continuous-thermodynamics framework based on this generalized model is also presented; expressions for chemical potentials, spinodals and critical points are derived using both the discrete multicomponent method and the continuous functional procedure. Internally consistent results are obtained. Criteria for multiple critical points are also derived. Computer programs are established for polydisperse-polymer solutions with either a standard or an arbitrary distribution for the polymer's molecular weight; in the latter case, the derivative method is applied, based on a previously developed spline fit. To illustrate the framework developed here, calculated liquid-liquid-equilibrium phase diagrams are shown, including UCST, LCST and hour-glass-shaped cloud-point curves, shadow curves, spinodals, critical points and their dependence on molecular parameters, on pressure and on molecular-weight distribution properties. used in those equations derived from ΔmixG. A binary energy parameter and a binary size parameter are used to fit experimental critical coordinates. Cloud-point curves, shadow curves, spinodals and critical points have been calculated under various conditions which cover different types of liquid-liquid-equilibrium phase equilibria including UCST, LCST and hour-glass shaped phase diagrams. If we have experimental critical points, spinodals, cloud-point curves and shadow curves, we can obtain the binary energy parameter and the binary size parameter as well as their temperature dependence if the experimental data cover a significant temperature range. Considering the difficulty of obtaining monodisperse polymer samples, we can now use a polydisperse polymer sample with a known molecular-weight distribution for experimental work (e.g. cloud points) and then use the parameters obtained experimentally to calculate phase-equilibrium properties for the same system but with a different molecular-weight distribution. Two different procedures, i.e., the discrete multicomponent method and the continuous functional method, have been used for deriving equations. Consistent results have been obtained by both methods. The discrete method is rigorous because polymer components are discrete. A continuous distribution function is only used to calculate various moments in those expressions. The functional method has the merit of mathematical integrity such that the continuous distribution function is built inside the whole framework. While the composition is, in fact, discrete, the continuous distribution provides a good approximation. The present work is only for solutions containing one solvent and one polydisperse polymer. Work in progress extends the methods discussed here to systems containing mixed solvents or mixed polymers and polymer blends with polydisperse polymers." @default.
• W1972996817 created "2016-06-24" @default.
• W1972996817 creator A5020540558 @default.
• W1972996817 creator A5025351275 @default.
• W1972996817 creator A5033680548 @default.
• W1972996817 creator A5062775963 @default.
• W1972996817 date "1995-03-01" @default.
• W1972996817 modified "2023-09-24" @default.
• W1972996817 title "Continuous thermodynamics for polydisperse polymer solutions" @default.
• W1972996817 cites W1975615259 @default.
• W1972996817 cites W1988551036 @default.
• W1972996817 cites W1992038834 @default.
• W1972996817 cites W1993358972 @default.
• W1972996817 cites W1994201106 @default.
• W1972996817 cites W1995211271 @default.
• W1972996817 cites W2011865872 @default.
• W1972996817 cites W2016382048 @default.
• W1972996817 cites W2016503547 @default.
• W1972996817 cites W2037016036 @default.
• W1972996817 cites W2039134848 @default.
• W1972996817 cites W2042713121 @default.
• W1972996817 cites W2059652945 @default.
• W1972996817 cites W2062393668 @default.
• W1972996817 cites W2064213620 @default.
• W1972996817 cites W2069926829 @default.
• W1972996817 cites W2078723406 @default.
• W1972996817 cites W2079965120 @default.
• W1972996817 cites W2081574751 @default.
• W1972996817 cites W2093448331 @default.
• W1972996817 cites W2115782706 @default.
• W1972996817 cites W2335752349 @default.
• W1972996817 cites W4240762175 @default.
• W1972996817 cites W4250871384 @default.
• W1972996817 cites W4254312376 @default.
• W1972996817 doi "https://doi.org/10.1016/0378-3812(94)02651-g" @default.
• W1972996817 hasPublicationYear "1995" @default.
• W1972996817 type Work @default.
• W1972996817 sameAs 1972996817 @default.
• W1972996817 citedByCount "29" @default.
• W1972996817 countsByYear W19729968172012 @default.
• W1972996817 countsByYear W19729968172013 @default.
• W1972996817 countsByYear W19729968172014 @default.
• W1972996817 countsByYear W19729968172016 @default.
• W1972996817 countsByYear W19729968172018 @default.
• W1972996817 countsByYear W19729968172019 @default.
• W1972996817 countsByYear W19729968172020 @default.
• W1972996817 countsByYear W19729968172021 @default.
• W1972996817 crossrefType "journal-article" @default.
• W1972996817 hasAuthorship W1972996817A5020540558 @default.
• W1972996817 hasAuthorship W1972996817A5025351275 @default.
• W1972996817 hasAuthorship W1972996817A5033680548 @default.
• W1972996817 hasAuthorship W1972996817A5062775963 @default.
• W1972996817 hasConcept C121332964 @default.
• W1972996817 hasConcept C121864883 @default.
• W1972996817 hasConcept C131847037 @default.
• W1972996817 hasConcept C134306372 @default.
• W1972996817 hasConcept C15920480 @default.
• W1972996817 hasConcept C178790620 @default.
• W1972996817 hasConcept C185592680 @default.
• W1972996817 hasConcept C18762648 @default.
• W1972996817 hasConcept C188109995 @default.
• W1972996817 hasConcept C196298200 @default.
• W1972996817 hasConcept C33923547 @default.
• W1972996817 hasConcept C44280652 @default.
• W1972996817 hasConcept C48372109 @default.
• W1972996817 hasConcept C521977710 @default.
• W1972996817 hasConcept C85906118 @default.
• W1972996817 hasConcept C94375191 @default.
• W1972996817 hasConcept C97355855 @default.
• W1972996817 hasConcept C98765843 @default.
• W1972996817 hasConceptScore W1972996817C121332964 @default.
• W1972996817 hasConceptScore W1972996817C121864883 @default.
• W1972996817 hasConceptScore W1972996817C131847037 @default.
• W1972996817 hasConceptScore W1972996817C134306372 @default.
• W1972996817 hasConceptScore W1972996817C15920480 @default.
• W1972996817 hasConceptScore W1972996817C178790620 @default.
• W1972996817 hasConceptScore W1972996817C185592680 @default.
• W1972996817 hasConceptScore W1972996817C18762648 @default.
• W1972996817 hasConceptScore W1972996817C188109995 @default.
• W1972996817 hasConceptScore W1972996817C196298200 @default.
• W1972996817 hasConceptScore W1972996817C33923547 @default.
• W1972996817 hasConceptScore W1972996817C44280652 @default.
• W1972996817 hasConceptScore W1972996817C48372109 @default.
• W1972996817 hasConceptScore W1972996817C521977710 @default.
• W1972996817 hasConceptScore W1972996817C85906118 @default.
• W1972996817 hasConceptScore W1972996817C94375191 @default.
• W1972996817 hasConceptScore W1972996817C97355855 @default.
• W1972996817 hasConceptScore W1972996817C98765843 @default.
• W1972996817 hasLocation W19729968171 @default.
• W1972996817 hasOpenAccess W1972996817 @default.
• W1972996817 hasPrimaryLocation W19729968171 @default.
• W1972996817 hasRelatedWork W1965478268 @default.
• W1972996817 hasRelatedWork W1965606246 @default.
• W1972996817 hasRelatedWork W1972996817 @default.
• W1972996817 hasRelatedWork W2041785512 @default.
• W1972996817 hasRelatedWork W2044991951 @default.
• W1972996817 hasRelatedWork W2072918387 @default.
• W1972996817 hasRelatedWork W2089372622 @default.

• next