Polymer-nanoinorganic particles composite membranes: a brief overview

Xu, Zheng; Yu, Liyun; Han, Ling-Feng

doi:10.1007/s11705-009-0199-0

Cited by 77 publications

(35 citation statements)

References 74 publications

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“…The marginal difference in water sorption observed for CS-PVA-GA and CS-PVA-GA-SWA (5 wt.%) could be due to the initial resistance to water sorption by CS-PVA-GA compared to CS-PVA-GA-SWA because of the less hydrophilic nature of the former as evident from the difference in contact angle shown in Table 1. The decrease in water sorption observed in both hybrid membranes when 15 wt.% of SWA was incorporated in the membranes is due to the aggregation of particles and increased void defects as observed for most of polymer-inorganic composites studied in the literature [54,55] and is evident from the surface and crosssectional SEM images shown in Fig. 4c, g, respectively.…”

Section: Sorption For the Membranesmentioning

confidence: 54%

Natural and synthetic solid polymer hybrid dual network membranes as electrolytes for direct methanol fuel cells

Meenakshi

Bhat

Sahu

et al. 2011

J Solid State Electrochem

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Hybrid dual-network membranes comprising chitosan (CS)-polyvinyl alcohol (PVA) networks crosslinked with sulfosuccinic acid (SSA) and glutaraldehyde (GA) and modified with stabilized silicotungstic acid (SWA) are reported for their application in direct methanol fuel cells (DMFCs). Physico-chemical properties of these membranes are evaluated using thermo-gravimetric analysis and scanning electron microscopy in conjunction with their mechanical properties. Based on water sorption and proton conductivity measurements for the membranes, the optimum content of 10 wt.% SWA in the membrane is established. The methanol crossover for these membranes are studied by measuring the mass balance of methanol using density meter and are found to be lower compared to Nafion-117 membrane. The membrane-electrode assembly with 10 wt.% stabilized SWA-CS-PVA hybrid membrane with SSA and GA as crosslinking agent delivers a peak power density of 156 mW cm −2 at a load current density of 400 mA cm −2 and 88 mW cm −2 at a load current density of 300 mA cm −2 , respectively, in DMFC at 70°C.

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Section: Sorption For the Membranesmentioning

confidence: 54%

Natural and synthetic solid polymer hybrid dual network membranes as electrolytes for direct methanol fuel cells

Meenakshi

Bhat

Sahu

et al. 2011

J Solid State Electrochem

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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).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, this technique is very useful for the preparation of films, coatings and, membranes by casting. The sol-gel method offers better control on the connectivity between inorganic-organic phases giving more homogeneous hybrid composite, morphology, particle size, and less phase segregation (Xu et al, 2009;Zarazua-Aguilar et al, 2017).…”

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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“…Improvement of hydrophilicity and blood compatibility on polyethersulfone membrane occurred by blending sulfonated polyethersulfone to use as biomaterials [2]. Also polyethersulfone membrane's properties could be enhanced by using nanomaterials to use in water desalination [3][4][5][6][7][8]. Nano metal oxides have been mainly used for salt rejection% enhancement and fouling mitigation.…”

Section: Introductionmentioning

confidence: 99%

Effects of TiO2 NTs% on Polyethersulfone/TiO2 NTs Membranes

Shaban¹,

Hamdy²,

Abdallah³

et al. 2015

JMSE-A

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Abstract:In this work, PES (polyethersulfone)/TiO 2 nanotubes membranes were fabricated by a simple and cheap method. The TiO 2 NTs (titanium dioxide nanotubes) are prepared by the hydrothermal method, the tubes had a narrow size distribution with an average inner diameter of 3-5 nm and outer diameter of 10-13 nm. TiO 2 NTs blended PES membranes are prepared by phase inversion method with different nanotubes percentage (0.18%-0.85%). The morphology of PES membrane was obviously affected by the addition of TiO 2 NTs. The prepared membranes were applied on a vacuum desalination system and the desalination results showed that the salt rejection % and permeate flux of the membrane are enhanced through the addition of TiO 2 NTs. The membrane with higher (0.85%) TiO 2 NTs content resulted in a decrease of salt rejection % because of the defective membrane structure.

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Polymer-nanoinorganic particles composite membranes: a brief overview

Cited by 77 publications

References 74 publications

Natural and synthetic solid polymer hybrid dual network membranes as electrolytes for direct methanol fuel cells

Natural and synthetic solid polymer hybrid dual network membranes as electrolytes for direct methanol fuel cells

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

Effects of TiO2 NTs% on Polyethersulfone/TiO2 NTs Membranes

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