Lattice fluid model generalized for specific interactions: An application to ternary polymer solutions

Mannella, G. A.; Carrubba, Vincenzo La; Brucato, V.; Sánchez, Isaac C.

doi:10.1016/j.fluid.2011.09.013

Cited by 7 publications

(6 citation statements)

References 20 publications

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“…1. The curve is similar to those from the thermally phase experiments at 25 1C by van de Witte et al [17] and the theoretical calculations at 30 1C by Mannella et al [18]. The binodal curves exist on the right side of the experimental data in this study.…”

Section: Cloud Points Of Plla-(14-dioxane-tween 80)-water Systemsupporting

confidence: 90%

Preparation of poly(L-lactic acid) microfiltration membranes by a nonsolvent-induced phase separation method with the aid of surfactants

Minbu

Ochiai

Kawase

et al. 2015

Journal of Membrane Science

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Section: Cloud Points Of Plla-(14-dioxane-tween 80)-water Systemsupporting

confidence: 90%

Preparation of poly(L-lactic acid) microfiltration membranes by a nonsolvent-induced phase separation method with the aid of surfactants

Minbu

Ochiai

Kawase

et al. 2015

Journal of Membrane Science

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“…A schematic of this stage is presented in Figure , showing a calculated phase diagram of PLLA‐dioxane‐water. The model adopted was based on Sanchez‐Lacombe with specific interactions, with the interaction parameters slightly modified to achieve a better fit on cloud point data (details on measurement and results are reported in Refs. and ]).…”

Section: Methodsmentioning

confidence: 99%

Coagulation bath composition and desiccation environment as tuning parameters to prepare skinless membranes via diffusion induced phase separation

Montesanto

Mannella

Pavia

et al. 2015

J of Applied Polymer Sci

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Diffusion Induced Phase Separation (DIPS) is a currently used technique to produce porous membranes for a large variety of applications. A strong limitation is represented by the occurrence of a dense skin, which is formed during the process, highly reducing the membrane permeability. To overcome this issue, two modifications of the standard DIPS protocol were investigated: the use of coagulation baths composed by a solvent/nonsolvent mixture and the desiccation in a controlled environment, by modulating the partial pressure of nonsolvent vapor. An appropriate choice of coagulation bath composition, together with an appropriate desiccation protocol (i.e., the use of a nonsolvent vapor), will produce a skinless membrane, and offers the chance to control the morphology of both membrane surfaces. These results underline the importance of post-treatment stage in membrane preparation via phase separation, thus suggesting that membrane washing/drying stage will affect the final morphology. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42151.

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“…7,22 The PLLA was purchased from Boehringer-Ingelheim (RESOMER R L 209 S, inherent viscosity 3 dl/g). The solvents employed were deionized water and 1-4 dioxane (Sigma-Aldrich, used without further purifications).…”

Section: Experimental Apparatusmentioning

confidence: 99%

“…The data obtained via a reliable measurement of cloud points can be employed for tuning model parameters. Cloud point data are useful for the derivation of interaction parameters in lattice fluid model, 22 thus, a relatively simple measurement technique coupled with a consistent model can provide useful information on phase behavior of polymer solutions.…”

Section: Introductionmentioning

confidence: 99%

Measurement of cloud point temperature in polymer solutions

Mannella

Carrubba

Brucato

2013

Review of Scientific Instruments

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A temperature-controlled turbidity measurement apparatus for the characterization of polymer solutions has been instrumented and set up. The main features are the coupled temperature-light transmittance measurement and the accurate temperature control, achieved by means of peltier cells. The apparatus allows to measure cloud point temperatures by adopting different cooling protocols: low rate for quasi-equilibrium measurements and high rate for detect kinetic effects. A ternary polymeric solution was adopted as case study system showing that cooling rate affects the measured cloud point temperature.

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Lattice fluid model generalized for specific interactions: An application to ternary polymer solutions

Cited by 7 publications

References 20 publications

Preparation of poly(L-lactic acid) microfiltration membranes by a nonsolvent-induced phase separation method with the aid of surfactants

Preparation of poly(L-lactic acid) microfiltration membranes by a nonsolvent-induced phase separation method with the aid of surfactants

Coagulation bath composition and desiccation environment as tuning parameters to prepare skinless membranes via diffusion induced phase separation

Measurement of cloud point temperature in polymer solutions

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