Comparison of two low-hazard organic solvents as individual and cosolvents for the fabrication of polysulfone membranes

Xiaobo Dong; Halle D. Shannon; Caleb Parker; Samantha De Jesus; Isabel C. Escobar

doi:10.1002/aic.16790

Comparison of two low-hazard organic solvents as individual and cosolvents for the fabrication of polysulfone membranes

Xiaobo Dong
, Halle D. Shannon
, Caleb Parker
, Samantha De Jesus
, Isabel C. Escobar

Producción científica: Article › revisión exhaustiva

27 Citas (Scopus)

Resumen

Petroleum-derived solvents commonly used in membrane fabrication are often hazardous and toxic, so the investigation of safer alternatives is important. In this study, two low-hazard solvents, methyl 5-(dimethylamino)-2-methyl-5-oxopentanoate (Rhodiasolv® PolarClean) and gamma-valerolactone (GVL), were investigated as sole solvents and as cosolvents to cast polysulfone membranes via nonsolvent induced phase inversion. Normalized viscosity was introduced as an indicator of dope solution homogeneity and was used to compare the required time of mixing to achieve full dissolution of the polymer in the different solvents/solvent mixtures. All dope solutions made with low-hazard solvents were found to be more viscous than those made with traditional solvents, which meant additional mixing time was needed, and that fabricated membranes were morphologically different. With respect to operation, membranes cast from dope solutions containing equal amounts of PolarClean and GVL displayed the most similar flux curves and solute rejection to those made using the traditional solvent tested.

Idioma original	English
Número de artículo	e16790
Publicación	AICHE Journal
Volumen	66
N.º	1
DOI	https://doi.org/10.1002/aic.16790
Estado	Published - ene 1 2020

Nota bibliográfica

Publisher Copyright:
© 2019 American Institute of Chemical Engineers

Financiación

The authors acknowledge that this work was supported by the National Science Foundation under Cooperative Agreement (grant number 1355438) and by the NSF KY EPSCoR Program. The authors acknowledge Solvay Novecare for providing PolarClean, Dr. Matthew Weisenburger in Center of Applied Energy Research, University of Kentucky, for his help with rheometer, and Dr. Wenxin Cao and Professor Fuqian Yang for their help on AFM. The authors acknowledge that this work was supported by the National Science Foundation under Cooperative Agreement (grant number 1355438) and by the NSF KY EPSCoR Program. The authors acknowledge Solvay Novecare for providing PolarClean, Dr. Matthew Weisenburger in Center of Applied Energy Research, University of Kentucky, for his help with rheometer, and Dr. Wenxin Cao and Professor Fuqian Yang for their help on AFM.

Financiadores	Número del financiador
Kentucky-NSF EPSCoR Program
Solvay Novecare
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China	1355438
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China

ASJC Scopus subject areas

Biotechnology
Environmental Engineering
General Chemical Engineering

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title = "Comparison of two low-hazard organic solvents as individual and cosolvents for the fabrication of polysulfone membranes",

abstract = "Petroleum-derived solvents commonly used in membrane fabrication are often hazardous and toxic, so the investigation of safer alternatives is important. In this study, two low-hazard solvents, methyl 5-(dimethylamino)-2-methyl-5-oxopentanoate (Rhodiasolv{\textregistered} PolarClean) and gamma-valerolactone (GVL), were investigated as sole solvents and as cosolvents to cast polysulfone membranes via nonsolvent induced phase inversion. Normalized viscosity was introduced as an indicator of dope solution homogeneity and was used to compare the required time of mixing to achieve full dissolution of the polymer in the different solvents/solvent mixtures. All dope solutions made with low-hazard solvents were found to be more viscous than those made with traditional solvents, which meant additional mixing time was needed, and that fabricated membranes were morphologically different. With respect to operation, membranes cast from dope solutions containing equal amounts of PolarClean and GVL displayed the most similar flux curves and solute rejection to those made using the traditional solvent tested.",

keywords = "low-hazard solvents, nonsolvent induced phase separation (NIPS), normalized viscosity (NV), polymeric membranes",

author = "Xiaobo Dong and Shannon, \{Halle D.\} and Caleb Parker and \{De Jesus\}, Samantha and Escobar, \{Isabel C.\}",

note = "Publisher Copyright: {\textcopyright} 2019 American Institute of Chemical Engineers",

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AU - Dong, Xiaobo

AU - Shannon, Halle D.

AU - Parker, Caleb

AU - De Jesus, Samantha

AU - Escobar, Isabel C.

PY - 2020/1/1

Y1 - 2020/1/1

N2 - Petroleum-derived solvents commonly used in membrane fabrication are often hazardous and toxic, so the investigation of safer alternatives is important. In this study, two low-hazard solvents, methyl 5-(dimethylamino)-2-methyl-5-oxopentanoate (Rhodiasolv® PolarClean) and gamma-valerolactone (GVL), were investigated as sole solvents and as cosolvents to cast polysulfone membranes via nonsolvent induced phase inversion. Normalized viscosity was introduced as an indicator of dope solution homogeneity and was used to compare the required time of mixing to achieve full dissolution of the polymer in the different solvents/solvent mixtures. All dope solutions made with low-hazard solvents were found to be more viscous than those made with traditional solvents, which meant additional mixing time was needed, and that fabricated membranes were morphologically different. With respect to operation, membranes cast from dope solutions containing equal amounts of PolarClean and GVL displayed the most similar flux curves and solute rejection to those made using the traditional solvent tested.

AB - Petroleum-derived solvents commonly used in membrane fabrication are often hazardous and toxic, so the investigation of safer alternatives is important. In this study, two low-hazard solvents, methyl 5-(dimethylamino)-2-methyl-5-oxopentanoate (Rhodiasolv® PolarClean) and gamma-valerolactone (GVL), were investigated as sole solvents and as cosolvents to cast polysulfone membranes via nonsolvent induced phase inversion. Normalized viscosity was introduced as an indicator of dope solution homogeneity and was used to compare the required time of mixing to achieve full dissolution of the polymer in the different solvents/solvent mixtures. All dope solutions made with low-hazard solvents were found to be more viscous than those made with traditional solvents, which meant additional mixing time was needed, and that fabricated membranes were morphologically different. With respect to operation, membranes cast from dope solutions containing equal amounts of PolarClean and GVL displayed the most similar flux curves and solute rejection to those made using the traditional solvent tested.

KW - low-hazard solvents

KW - nonsolvent induced phase separation (NIPS)

KW - normalized viscosity (NV)

KW - polymeric membranes

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Comparison of two low-hazard organic solvents as individual and cosolvents for the fabrication of polysulfone membranes

Resumen

Nota bibliográfica

Financiación

ASJC Scopus subject areas

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