Fabrication or preparation and characterization of new modified MCM-41/PSf nanocomposite membrane coated by PDMS

Jomekian, Abolfazl; Pakizeh, Majid; Shafiee, Ali; Mansoori, Seyed Ali Akbar

doi:10.1016/j.seppur.2011.06.011

Cited by 43 publications

(28 citation statements)

References 38 publications

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“…Porous material inorganic enhance the gas separation properties by molecular sieving while non-porous inorganic material do that by conditioned the free volume of www.iosrjen.org 491 | P a g e the matrix. The common inorganic materials used to produce MMM are zeolites [60,61,62,63,64], ordered mesoporous silica [65,66], nonporous silica, carbon molecular sieves, and carbon nanotubes [67].…”

Section: Mixed Matrix Membranesmentioning

confidence: 99%

“…To overcome the first problem, the composition of the inorganic material in PSf matrix should not be too much. Some action, such as inorganic molecular sizing [68], zeolite surface modification with silane [69], and particle functionalization [66,70] can overcome the second problem. Table 7 resumes the gas transport properties of MMM based on the type of inorganic material in the literature.…”

Section: Mixed Matrix Membranesmentioning

confidence: 99%

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Polysulfone membranes for CO2/CH4 separation: State of the art

Julian¹

2012

IOSRJEN

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The world market for CO 2 /CH 4 separation using membrane technology is getting bigger and polysulfone (PSf) is one of the most widely investigated polymer membrane materials. However, the existing PSf membranes performances are insufficient to fully exploit these opportunities. Therefore, modification that would produce membrane that fit the needs of target separation performances is a main issue. Firstly, various manufacturing processes to achieve best CO 2 /CH 4 separation performance are discussed, including important post-treatments. The formulation of polymer solution and effects of manufacturing parameters on the resulting membranes are presented. Other modifications, which involved PSf structure modification, PSf-based copolymer, mixed matrix membrane and facilitated transport membrane, are also discussed. Performances of those modified membranes are compared with the Robeson's upper bound and some modifications give satisfying results. Finally, commercial application of PSf membranes for CO 2 /CH 4 separation is discussed.

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Section: Mixed Matrix Membranesmentioning

confidence: 99%

Section: Mixed Matrix Membranesmentioning

confidence: 99%

Polysulfone membranes for CO2/CH4 separation: State of the art

Julian¹

2012

IOSRJEN

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“…The incorporation of an inorganic component into a polymer matrix results in a hybrid material which exhibits better specific properties than both organic matrix and inorganic material by separate (Xu et al, 2009;Pérez-Escobedo et al, 2016). These materials can be used in attractive applications such as catalysis (Hasik et al,2009;Starlet et al, 2012), biomaterials (Wei et al, 2007;Vallés-Lluch et al, 2010), sensors (Kang et al, (2010); Zeng et al, 2007), coatings (Torrey et al, 2008;Armstrong et al 2012), and membranes (Jomekian et al, 2011;Sadeghi et al, 2011). For instance, the use of polymericinorganic composites has been successfully employed to enhance the performance of membranes for gas separation (Lua et al, 2013;Khosravi et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…In the first way, an inorganic filler previously prepared is mixed with a polymeric solution and dispersed by stirring and ultrasonic treatment (Mahajan et al, 2002). Nevertheless, critical factors as the interface voids derived from a poor compatibility between both phases (Chung et al, 2007) and the difficulty to eliminate the particle agglomeration have often been reported as the main disadvantages of this method (Jomekian et al, 2011). In the second case, the organic monomers are polymerized at the surface of functionalized inorganic particles giving a covalent junction each other (Babanzadeh et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Effect of Silica Source on the Synthesis and Properties of Polysulfone/Silica Composite Membranes for Gas Separation

Castruita¹

2018

Rev. Mex. Ing. Quim.

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This work reports the synthesis in-situ of silica particles inside a polysulfone matrix by the sol-gel method in acidic medium using different polymerization inorganic precursors: tetraethylorthosilicate (TEOS), 3-aminopropyltriethoxysilane (APTES) and mixture of them. The effect of the type of inorganic precursor on the formation of silica particles was studied. Composite membranes were prepared by casting technique from these organic-inorganic materials. These membranes were characterized by X-ray diffraction (XRD), infrared spectroscopy (FTIR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The morphology, particle size and particle-polymer interaction were studied by scanning electron microscopy (SEM). Additionally, a semi-quantitative chemical analysis by energy dispersive X-ray spectroscopy (EDX) showed the chemical composition of the composite membranes. Type and concentration of silica precursor affected the morphology, particle size and distribution of silica in the composite membranes. Composite membranes without interfacial voids were obtained from APTES at 25 wt%. Initial studies about the gas separation properties of CO 2 /CH 4 gas mixture revealed an improvement on the CO 2 permeability of composite membrane comprising silica particles synthesized from APTES in comparison with the polymeric membrane. Keywords: silica, sol-gel, polysulfone, composite membrane, gas separation. ResumenEn este trabajo se reporta la síntesis in-situ de partículas de sílice dentro de una matriz de polisulfona mediante el método sol-gel en medio ácido usando diferentes precursores inorgánicos de polimerización: tetraetilortosilicato (TEOS), 3-aminopropiltrietoxisilano (APTES) y mezcla de ambos. Se estudió el efecto del tipo de precursor inorgánico en la formación de las partículas de sílice. Las membranas compuestas se prepararon por evaporación del disolvente a partir de los materiales orgánico-inorgánico. Estas membranas se caracterizaron por difracción de rayos X (XRD), espectroscopía de infrarrojo (FTIR), calorimetría diferencial de barrido (DSC) y análisis termogravimétrico (TGA). La morfología, tamaño de partícula y la interacción partícula-polímero se estudiaron por microscopia electrónica de barrido (SEM). Adicionalmente, el análisis químico semicuantitativo mediante espectroscopía de energía dispersiva de rayos X (EDX) mostró la composición química de las membranas compuestas. El tipo y la concentración del precursor de la sílice afectaron la morfología, el tamaño de partícula y la distribución de la sílice en las membranas compuestas. Las membranas compuestas que fueron obtenidas a partir de APTES al 25% no mostraron huecos interfaciales. Estudios iniciales de las propiedades de separación de una mezcla CO 2 /CH 4 revelaron el mejoramiento de la permeabilidad de CO 2 de las membranas compuestas que contienen partículas de sílice sintetizadas a partir de APTES en comparación con la membrana polimérica.

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“…16,17 PDMS is also known to remove surface defects from base asymmetric membranes. 22 The combination of PSF and PDMS into a composite membrane would result in a high-performance membrane. Excellent separation performance of PSF and high thermochemical stability of PDMS will result in a highly stable polymeric membrane for gas separation applications.…”

Section: Introductionmentioning

confidence: 99%

Enhanced gas separation performance of PSF membrane after modification to PSF/PDMS composite membrane in CO₂/CH₄ separation

Suleman

Lau

Yeong

2017

J of Applied Polymer Sci

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Asymmetric polysulfone (PSF) membrane was developed and modified to PSF/polydimethylsiloxane (PSF/PDMS) composite membrane by dip coating technique. Effect of PDMS coating time on membrane properties was examined by scanning electron microscopy, thermogravimetric analysis, differential scanning calorimetry, attenuated total reflectance-Fourier transform infrared, and water contact angle. The increase in PDMS coating time resulted in a decrement in the thermal strength of PSF membrane. Surface contact angle values revealed that increase in PDMS coating time had increased the surface hydrophobicity in membranes. CO 2 /CH 4 separation performance of membranes was evaluated, and an increase in CO 2 /CH 4 ideal selectivity was observed with the increase of PDMS coating time. At feed pressure of 10 bar, the selectivity of PSF has increased up to 65% after dip coating with PDMS for 30 min. Modification of polymeric membrane into composite membrane provided a way forward towards the enhancement of gas separation performance in polymeric membranes.

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Fabrication or preparation and characterization of new modified MCM-41/PSf nanocomposite membrane coated by PDMS

Cited by 43 publications

References 38 publications

Polysulfone membranes for CO2/CH4 separation: State of the art

Polysulfone membranes for CO2/CH4 separation: State of the art

Effect of Silica Source on the Synthesis and Properties of Polysulfone/Silica Composite Membranes for Gas Separation

Enhanced gas separation performance of PSF membrane after modification to PSF/PDMS composite membrane in CO₂/CH₄ separation

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Fabrication or preparation and characterization of new modified MCM-41/PSf nanocomposite membrane coated by PDMS

Cited by 43 publications

References 38 publications

Polysulfone membranes for CO2/CH4 separation: State of the art

Polysulfone membranes for CO2/CH4 separation: State of the art

Effect of Silica Source on the Synthesis and Properties of Polysulfone/Silica Composite Membranes for Gas Separation

Enhanced gas separation performance of PSF membrane after modification to PSF/PDMS composite membrane in CO2/CH4 separation

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Enhanced gas separation performance of PSF membrane after modification to PSF/PDMS composite membrane in CO₂/CH₄ separation