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Cadore ÍR, Ambrosi A, Cardozo NSM, Tessaro IC. Poly(ethylene terephthalate) phase inversion membranes: Thermodynamics and effects of a poor solvent on the membrane characteristics. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ígor Renz Cadore
- Laboratory of Membrane Separation Processes (LASEM), Department of Chemical Engineering Universidade Federal do Rio Grande do Sul Porto Alegre Rio Grande do Sul Brazil
| | - Alan Ambrosi
- Laboratory of Membrane Separation Processes (LASEM), Department of Chemical Engineering Universidade Federal do Rio Grande do Sul Porto Alegre Rio Grande do Sul Brazil
| | - Nilo Sergio Medeiros Cardozo
- Laboratory of Technology and Polymer Processing (LATEP), Department of Chemical Engineering Universidade Federal do Rio Grande do Sul Porto Alegre Rio Grande do Sul Brazil
| | - Isabel Cristina Tessaro
- Laboratory of Membrane Separation Processes (LASEM), Department of Chemical Engineering Universidade Federal do Rio Grande do Sul Porto Alegre Rio Grande do Sul Brazil
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Nanocrystalline Cellulose/Polyvinylpyrrolidone Fibrous Composites Prepared by Electrospinning and Thermal Crosslinking. INT J POLYM SCI 2019. [DOI: 10.1155/2019/7103936] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Nanocellulose/polyvinylpyrrolidone (nCel/PVP) fibrous composite materials containing rod-like nanocrystalline cellulose particles with the lengths varying in the range from 100 to 2000 nm were prepared by using DC electrospinning. The particle size had a strong effect on the precursor viscosity, process efficiency, and resulting fiber diameter. The thermal crosslinking of nCel/PVP composite nanofibers with up to 1.0 : 8.0 nCel/PVP weight ratio resulted in fibrous membranes with textural, air transport, and mass swelling properties varying significantly with the size of cellulose particles. The presence of nCel particles increased the oxidation resistance of PVP during the crosslinking and affected the morphological changes of nCel/PVP fibrous membranes in aqueous solutions. Particles with the smallest size improved the strength of the membrane but decreased its mass swelling capacity, whereas the larger particles led to a more porous and flexible, but mechanically weaker, membrane structure with a higher swelling ability. Thus, by using the nCel particles of different size and shape, the properties of nCel/PVP composite fibrous membranes can be tailored to a specific application.
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Cadore ÍR, Ambrosi A, Cardozo NSM, Tessaro IC. Phase separation behavior of poly(ethylene terephthalate)/(trifluoroacetic acid/dichloromethane)/water system for wet phase inversion membrane preparation. J Appl Polym Sci 2018. [DOI: 10.1002/app.47263] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ígor Renz Cadore
- Laboratory of Membrane Separation Processes (LASEM), Department of Chemical Engineering; Universidade Federal do Rio Grande do Sul; 2777 Ramiro Barcelos Street, Porto Alegre Rio Grande do Sul 90035-007 Brazil
| | - Alan Ambrosi
- Laboratory of Membrane Separation Processes (LASEM), Department of Chemical Engineering; Universidade Federal do Rio Grande do Sul; 2777 Ramiro Barcelos Street, Porto Alegre Rio Grande do Sul 90035-007 Brazil
| | - Nilo Sérgio Medeiros Cardozo
- Laboratory of Technology and Polymer Processing (LATEP), Department of Chemical Engineering; Universidade Federal do Rio Grande do Sul; Engenheiro Luiz Englert Street Building 12204, Porto Alegre Rio Grande do Sul 90040-040 Brazil
| | - Isabel Cristina Tessaro
- Laboratory of Membrane Separation Processes (LASEM), Department of Chemical Engineering; Universidade Federal do Rio Grande do Sul; 2777 Ramiro Barcelos Street, Porto Alegre Rio Grande do Sul 90035-007 Brazil
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Evenepoel N, Wen S, Tilahun Tsehaye M, Van der Bruggen B. Potential of DMSO as greener solvent for PES ultra- and nanofiltration membrane preparation. J Appl Polym Sci 2018. [DOI: 10.1002/app.46494] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nicholas Evenepoel
- Department of Chemical Engineering; KU Leuven; Celestijnenlaan 200F, Leuven B-3001 Belgium
| | - Shufen Wen
- Department of Chemical Engineering; KU Leuven; Celestijnenlaan 200F, Leuven B-3001 Belgium
- Department of Environmental and Chemical Engineering; University of Calabria; Via Pietro Bucci, Cubo 44A, Arcavacata di Rende, CS 87036 Italy
| | - Misgina Tilahun Tsehaye
- Department of Chemical Engineering; KU Leuven; Celestijnenlaan 200F, Leuven B-3001 Belgium
- Department of Chemical Engineering; KIoT, Wollo University; Kombolcha, Ethiopia
| | - Bart Van der Bruggen
- Department of Chemical Engineering; KU Leuven; Celestijnenlaan 200F, Leuven B-3001 Belgium
- Faculty of Engineering and the Built Environment; Tshwane University of Technology; Private Bag X680, Pretoria 0001 South Africa
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