Ternary Composite Membrane Research Articles

Study of electric field-enhanced mass transfer and Li/Mg separation of N, N-bis (1-methylheptyl) acetamide/TBP-NaFeCl4 composite membrane

Using N,N-bis(1-methylheptyl)acetamide (N503) synergized with TBP-NaFeCl4 (TFe), a ternary composite extraction membrane known as TFeN-PIM was created. Under optimum membrane phase conditions, the mass transfer properties of TFeN-PIM-Li(Ⅰ) and its Li/Mg selective separation performance by electric field augmentation were examined, and confirmed the mechanism of TFeN-PIM-Li(Ⅰ) electric field enhanced mass transfer. The findings demonstrate a homogeneous distribution of [FeCl4-] in the TFeN-PIM membrane phase and a decrease in the water contact angle as the TFe content increases. In the TFeN-PIM membrane, the cation binding order of the composite carrier was H+>Li+>Na+>Mg2+, and the mass transfer was carried out at the interface of the two phases of the membrane through the mechanism of "cation exchange-neutralization", in which Li(Ⅰ) was bonded with the carrier in the form of 2N503-LiFeCl4-2TBP, and showed a fixed-site "hopping" mass transfer characteristics under the reinforcement of electric field. The mass transfer process of the TFeN-PIM- Li(Ⅰ) system under electric field enhancement conforms to the first-order kinetic rate equation, and the voltage (5–45 V) is positively correlated with the permeability coefficient PLi(Ⅰ) but decreases the Li/Mg selectivity of TFeN-PIM. The SLi(Ⅰ)/Mg(Ⅱ) of TFeN-PIM was 9.18 at 3 V. After three cycles of 72 h cycling at 40 V, the decrease rate of PLi(Ⅰ) was <7.42 %, which showed good stability.

Biobased Tannic Acid-Chitosan Composite Membranes as Reusable Adsorbents for Effective Enrichment of Phosphopeptides.

High-performance reusable materials from renewable resources are rare and urgently required in bioseparation. Herein, a series of tannic acid-chitosan composite membranes for the enrichment of phosphopeptides were fabricated by the freeze casting method. First, a tannic acid-chitosan composite membrane was acquired via the multiple hydrogen bonds between tannic acid and chitosan, which had a long-range aligned three-dimensional microstructure. Second, a covalent-hydrogen bond hybrid composite was also fabricated, with stable and aligned honeycomb-like microstructures that formed by the synergy of covalence and hydrogen bonding. Besides, a ternary composite membrane was "one-pot" synthesized by the copolymerization of tannic acid, chitosan, and Ti4+ ions, indicating the feasibility of involving metal ions in the composition of the polymer skeleton in place of additional modification steps. The as-prepared chitosan composite membranes exhibited excellent performance in the enrichment of phosphopeptides from β-casein tryptic digest and human serum. Benefitting from the long-range aligned honeycomb-like structure coordinated by hydrogen bonds and covalent bonds, and a large number of pyrogallol functional groups provided by tannic acid, the covalent-hydrogen bond hybrid membrane showed excellent reusability and could be reused up to 16 times in phosphopeptide enrichment, as far as we know, which is the best reported result to date.

Preparation and Characterization of a Novel Tragacanth Gum/Chitosan/Sr-Nano-Hydroxyapatite Composite Membrane.

It is a great challenge to obtain an ideal guided bone regeneration (GBR) membrane. In this study, tragacanth gum (GT) was introduced into a chitosan/nano-hydroxyapatite (CS/n-HA) system. The effects of different component ratios and strontium-doped nano-hydroxyapatite (Sr-HA) on the physical-chemical properties and degradation behavior of the CS/Sr-n-HA/GT ternary composite membrane were investigated using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), contact angle, electromechanical universal tester and in vitro soaking in simulated body fluid (SBF). The results showed that CS could be ionically crosslinked with GT through electrostatic interaction, and Sr-n-HA was loaded via hydrogen bond, which endowed the GT/CS/n-HA composite membrane with good tensile strength and hydrophilicity. In addition, the results of immersion in SBF in vitro showed that CS/n-HA/GT composite membranes had different degradation rates and good apatite deposition by investigating the changes in pH value, weight loss, water absorption ratio, SEM morphology observation and tensile strength reduction. All results revealed that the CS/Sr-n-HA/GT (6:2:2) ternary composite membrane possessed the strongest ionic crosslinking of GT and CS, which was expected to obtain more satisfactory GBR membranes, and this study will provide new applications of GT in the field of biomedical membranes.

Electrospun PVA membranes reinforced with cellulose nanocrystals and thermally reduced graphene oxide: Thermal, mechanical and UV-protection properties

Polyvinyl alcohol (PVA) has been widely proposed as biodegradable films, but it suffers rapid UV degradation affecting mechanical properties, low water resistance and poor antimicrobial properties. To overcome these difficulties, it has been blend with nanocrystalline cellulose (CNC) to produce nanocomposite membranes; however, adding a third element such as reduced graphene oxide (rGO) to the blend with potential packaging applications has not been reported. Herein, CNC was isolated from agroindustrial wastes (sugarcane bagasse; SCB) and used along with thermally reduced graphene oxide (TrGO) to be incorporated into PVA for the production of electrospun membranes for packaging applications. A wide variety of electrospinning parameters were analyzed to obtain PVA:CNC:TrGO composite membranes and their effects on thermal stability, mechanical properties, UV protection and moisture absorption, were evaluated. The results show that the isolation of CNC from SCB presented two phases: monoclinic and triclinic of type I cellulose. The highest crystallinity index (78.96%) and the diameter (10–20 nm)-length (150–200 nm) relation were found at 50 °C using a fiber:acid solution ratio of 1:50. In the case of ternary composite membranes, only free-defect morphologies with a composition of 84.5:15.0:0.5 wt% (PVA:CNC:TrGO) were observed. As a result of the adequate orientation and dispersion of the CNC:TrGO in the PVA matrix an improved was observed in the thermal stability, mechanical (137.48 MPa, HIT), UV barrier (up to 6% compared to pure PVA) and moisture absorption (reducing from 4.8% to 0.05%) properties. The eco-friendly structured ternary nanocomposites support the desired properties to produce food packaging materials.

Novel dual-heterojunction photocatalytic membrane reactor based on Ag2S/NH2-MIL-88B(Fe)/poly(aryl ether nitrile) composite with enhanced photocatalytic performance for wastewater purification

The separation and reuse of powdered photocatalysts have become a significant obstacle to applying photocatalytic technology in engineering. Here, we propose a method that is fully applicable to the conventional solvent-nonsolvent induced phase separation (NIPS) technique by mixing porous nano photocatalyst NH2-MIL-88B(Fe) into polyaryl ether nitrile(PEN) with carboxyl groups in situ construction of nano-functionalized photocatalytic matrix membrane (NH2-MIL-88B(Fe)/PEN). Then, silver sulfide(Ag2S) was grown on the surface of the NH2-MIL-88B(Fe)/PEN film as a separation layer by thermal reaction self-assembly to obtain a photocatalytic composite film Ag2S/NH2-MIL-88B(Fe)/PEN. The formation of the double heterojunction can effectively inhibit the recombination of photogenerated electrons and holes, and the heterojunction is established at the interface after the composite material is constructed, thereby reducing the resistance and accelerating the photoinduced carrier transfer. The experimental results show that under optimal conditions, the well-stabilized Ag2S/NH2-MIL-88B(Fe)/PEN ternary composite membrane can remove 99.97 % of SDZ, and the mineralization rate is 85.41 %. After 8 cycles of Ag2S/NH2-MIL-88B(Fe)/PEN photocatalytic membrane, the removal rate of SDZ is still as high as 91.76 %, indicating that the catalytic membrane has good reusability and stability. The photocatalytic film system can also achieve good strength, toughness, and high-temperature resistance. Furthermore, possible photo-degradation pathways were investigated based on LC-MS/MS analysis to better understand the photo-degradation process. This study provides a new idea for developing a new generation of multifunctional photocatalytic membranes.

The Design of Ternary Composite Polyurethane Membranes with an Enhanced Photocatalytic Degradation Potential for the Removal of Anionic Dyes

Photocatalysis is an efficient and an eco-friendly way to eliminate organic pollutants from wastewater and filtration media. The major dilemma coupled with conventional membrane technology in wastewater remediation is fouling. In this study, the photocatalytic degradation potential of novel thermoplastic polyurethane (TPU) based NiO on aminated graphene oxide (NH2-GO) nanocomposite membranes was explored. The fabrication of TPU-NiO/NH2-GO membranes was achieved by the phase inversion method and analyzed for their performances. The membranes were effectively characterized in terms of surface morphology, functional group, and crystalline phase identification, using scanning electron microscopy, Fourier transformed infrared spectroscopy, and X-ray diffraction analysis, respectively. The prepared materials were investigated in terms of photocatalytic degradation potential against selected pollutants. Approximately 94% dye removal efficiency was observed under optimized conditions (i.e., reaction time = 180 min, pH 3–4, photocatalyst dose = 80 mg/100 mL, and oxidant dose = 10 mM). The optimized membranes possessed effective pure water flux and excellent dye rejection (approximately 94%) under 4 bar pressure. The nickel leaching in the treated wastewater sample was determined using inductively coupled plasma-optical emission spectrometry (ICP-OES). The obtained data was kinetically analyzed using first- and second-order reaction kinetic models. A first-order kinetic study was suited for the present study. Besides, the proposed membranes provided excellent photocatalytic ability up to six reusability cycles. The combination of TPU and NH2-GO provided effective strength to membranes and the immobilization of NiO nanoparticles improved the photocatalytic behavior.

Novel PAN / Bi2MoO6 / Ti3C2 ternary composite membrane via electrospinning with enhanced photocatalytic degradation of tetracycline

Fiber membrane for adsorption organic pollutants from wastewater has attracted more and more attention because of its easy recovery performance. However, the adsorption properties of fiber membranes alone are not sufficient to effectively and quickly degrade pollutants. In this work, PAN/Bi2MoO6/Ti3C2 (PAN/BT) fiber membrane was prepared by electrospinning. The morphology, crystal structure and photocatalytic activity of the obtained membranes were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), photoelectron spectroscopy (XPS) and UV–visible spectrophotometer (UV–vis). The experimental results showed that it not only had high recovery performance but also good photocatalytic activity, and the best sample could effectively degrade 90.3% of tetracycline. After three times of photocatalytic regeneration, the removal rate is still about 80%. Its efficient catalytic performance comes from Bi2MoO6/Ti3C2 heterojunction. The Ti3C2 accelerates the separation and transfer of photogenerated electrons and effectively inhibits the recombination of photogenerated carriers. The films formed by PAN electrospinning are easy to recycle because of their good toughness. The construction of electrospinning membrane with composite photocatalyst is an easy and effective way to improve water environmental remediation pollution caused by tetracycline under visible light.

A Ternary Composite Polysulfone Membrane with Photocatalytic, Superhydrophilic, and Antifouling Properties for Efficient Water Ultrafiltration

A Ternary Composite Polysulfone Membrane with Photocatalytic, Superhydrophilic, and Antifouling Properties for Efficient Water Ultrafiltration

Preparation of Butadiene-Bridged Polymethylsiloxane/Ethylcellulose/1-Carboxymethyl-3-methylimidazolium Chloride Ternary Composite Membranes for Gas Separation.

Excessive CO2 emissions have resulted in global warming and are a serious threat to the life of people, various strategies have been implemented to cut carbon emissions, and one of them is the use of a gas separation membrane to capture CO2 effectively. In this experiment, the butadiene-bridged polymethylsiloxane (BBPMS)/ethyl cellulose (EC)/ionic liquid (IL) ternary composite membranes were prepared by EC as a substrate, BBPMS, and IL as additives in tetrahydrofuran under high-speed stirring and coated on the membrane. The membrane structure was characterized by a Fourier transform infrared spectrometer and scanning electron microscope, and the membrane properties were tested by a membrane tensile strength tester, thermal weight loss analyzer, and gas permeability meter. The results show that the surface of the ternary composite membrane is dense and flat with a uniform distribution, and the membrane formation, heat resistance, and mechanical properties are good. The permeability coefficient of the ternary composite membrane for CO2 reached 1806.03 Barrer, which is 20.00 times higher than that of the EC/IL hybrid matrix membrane. The permeability coefficient of O2 reached 321.01 Barrer, which is 19.21 times higher than that of the EC/IL membrane. When the doping amount of BBPMS is 70–80%, the O2/N2 gas permeation separation of the BBPMS/EC/IL ternary composite membrane is close to the Robertson 2008 curve. It is always known that in the gas separation process the membrane material is the most crucial factor. The success of this experiment points to a new direction for the preparation of new membrane materials.

Nanostructured Polymer Composite Electrolytes with Self-Assembled Polyoxometalate Networks for Proton Conduction

Nanostructured Polymer Composite Electrolytes with Self-Assembled Polyoxometalate Networks for Proton Conduction

Proton exchange composite membranes comprisingSiO2, sulfonatedSiO2, and metal–organic frameworks loaded inSPEEKpolymer for fuel cell applications

AbstractProton exchange membrane fuel cell (PEMFC) is a promising technology that offers a clean and efficient renewable energy source. The hybrid SiO2, sulfonated SiO2(SSiO2), and metal–organic framework‐5 (MOF‐5) incorporated sulfonated poly (ether ether ketone) (SPEEK) ternary composite membranes are fabricated using dry phase inversion technique for PEMFC. The membrane performance is evaluated in terms of water uptake, ion exchange capacity, methanol permeability, and proton conductivity (PC) measurements. The morphological study of fabricated membranes was carried out using scanning electron microscopy and atomic force microscopy analysis. The mechanical stability is strengthened up to 30–40%, and the PC gets enhanced with the incorporation of MOF‐5, achieving simultaneous improvement in proton conduction and membrane stability. The PC of the ternary SPEEK/SSiO2/MOF‐5 membrane is 3.69 × 10−3S cm−1, 32% more than the neat membrane. A significant increase in selectivity of 23% is observed by incorporating SSiO2and MOF‐5 fillers when compared with the neat membrane. The synergistic effect of MOF‐5 and SSiO2in the ternary membrane has significantly improved water retention and proton conductivity. The functional SO3H groups of SiO2and MOF‐5 bonded via acid–base electrostatic interactions with the SPEEK; enhances proton conduction accompanied by suppressing the methanol penetration through membranes.

Ternary metal composite membrane FCMNCM enhances the separation of As(Ⅲ) in water through the multifunctional cooperation

More cases of arsenic contamination are reported globally, making the restoration of arsenic in water an active area of research. Especially, As(Ⅲ) is more difficult to remove than negatively charged As(Ⅴ) due to the presence of neutral H3AsO3 in the water, so to achieve efficient separation of As(Ⅲ) in water, it is very important to pre-oxidize As(Ⅲ) to As(Ⅴ). Herein, Fe-coated Cu0 doped MnO2 nanowire membrane (FCMNCM) was successfully prepared to enhance the oxidation of As(Ⅲ) to As(Ⅴ) through the combination of superoxide anion (O2·-) and MnO2 oxidation. Experimental results show that Cu0 activates oxygen to generate O2·-, the generated O2·- not only significantly enhances the conversion efficiency of As(Ⅲ) to As(Ⅴ) but also oxidize the Mn(Ⅱ)/Mn(Ⅲ) produced by the reduction of MnO2 by As(Ⅲ) to Mn(Ⅳ) again to realize multi-channel oxidation of As(Ⅲ), and the maximum separation efficiency of As(Ш) can reach 99.34%. Acidic conditions are favorable for the separation of As(Ш), and carbonate and phosphate have a serious negative effect on As(Ⅲ) separation by competing for the active site. Anti-fouling and repeatability experimental show that FCMNCM is an environmentally friendly material with long service life and excellent reusability, it provides a new platform for As(Ⅲ)-containing sewage treatment.

Surface roughness of ternary blends: Polypropylene/chitosan/sisal fiber membranes

The rough morphological structure of ternary blend composite membranes was studied. The surface roughness of the composites were analysed. Recurrent topographies and the reliance of length-scale on rough surfaces were established in the analysis done by scanning probe electron microscopy. The membranes with increasing amount of sisal fibre exhibited higher roughness surface.

Regulating phase-change temperatures of form-stable phase-change ternary composite fibrous membranes consisting of polystyrene nanofibers and fatty acid eutectics via co-electrospinning method

The fatty acid ternary eutectics such as capric-lauric-myristic acid, capric-lauric-palmitic acid, capric-lauric-stearic acid, capric-myristic-palmitic acid, capric-myristic-stearic acid, and capric-palmitic-stearic acid and quaternary eutectics such as capric-lauric-myristic-palmitic acid, capric-lauric-myristic-stearic acid, capric-lauric-palmitic-stearic acid, capric-myristic-palmitic-stearic acid, and lauric-myristic-palmitic-stearic acid were selected as solid-liquid phase-change materials (PCMs). And then the innovative ternary eutectic/polystyrene (PS)/ternary eutectic and ternary eutectic/PS/quaternary eutectic form-stable phase-change composite fibrous membranes (PCCFMs) were directly prepared by the co-electrospinning method under the same spinning parameters. The as-prepared form-stable PCCFMs exhibited three-dimensional fibrous network structure with the average fiber diameter of about 410–780 nm according to the scanning electron microscopy images. The adhesion among nanofiber intersections was observed occasionally. The differential scanning calorimetry results showed that fatty acid eutectics have been successfully combined into the form-stable PCCFMs, and their melting peak temperatures mostly ranged from 15°C to 21°C with a temperature interval of 1°C. Moreover, the phase-change enthalpies reached about 40–61 kJ kg−1. It is concluded that these electrospun form-stable PCCFMs with appropriate phase-change temperatures could be considered as potential PCMs to be applied in thermo-regulating fibers and textiles.

Development of electrospun polystyrene-based form-stable phase change ternary composite fibrous membranes with the melting peak temperatures of 15–25 °C for storage and retrieval of thermal energy

The eight kinds of fatty acid binary and ternary eutectics such as capric–lauric acid (CL), capric–myristic acid (CM), capric–palmitic acid (CP), capric–stearic acid (CS), capric–lauric–palmitic acid (CLP), capric–myristic–palmitic acid (CMP), capric–myristic–stearic acid (CMS), and capric–palmitic–stearic acid (CPS) were selected as solid–liquid PCMs in this paper. The innovative electrospun fatty acid binary eutectic/polystyrene/fatty acid ternary eutectic (i.e., CL/PS/CLP, CM/PS/CLP, CP/PS/CLP, CS/PS/CLP, CL/PS/CMS, CM/PS/CMS, CP/PS/CMS, CS/PS/CMS, CL/PS/CPS, CM/PS/CPS, CP/PS/CPS and CS/PS/CPS) and fatty acid ternary eutectic/polystyrene/fatty acid ternary eutectic (i.e., CLP/PS/CMP, CLP/PS/CMS, CLP/PS/CPS, CMP/PS/CMS, CMP/PS/CPS and CMS/PS/CPS) form-stable phase change composite fibrous membranes (PCCFMs) were fabricated by co-electrospinning. The morphological structure, phase change temperatures, and enthalpies were investigated by scanning electron microscope (SEM) and differential scanning calorimetry (DSC), respectively. The SEM images showed that the PS-based phase change composite fibers were collected to form form-stable PCCFMs with the average fiber diameter of about 335–640 nm. The DSC analysis indicated that the melting peak temperatures of electrospun PS-based form-stable PCCFMs can be adjusted to 15–25 °C with the temperature interval of 1 °C by combining the both of fatty acid binary and ternary eutectics into the PS supporting fibers. These PS-based form-stable PCCFMs can be recommended for potential low-temperature thermal energy storage applications to regulate temperature and satisfy the human thermal comfortability.

Sulfonated Poly(ether ether ketone) Doped with Ammonium Ionic Liquids and Nano-Silicon Dioxide for Polymer Electrolyte Membranes

Nano-silicon dioxide (SiO2) was incorporated into the matrix of sulfonated poly(ether ether ketone) (SPEEK)/ammonium ionic liquid (AIL) membranes by solution casting, with the aim of reducing ionic liquid leaching and any consequent decrease in proton conductivity. Fourier transform infrared (FTIR) spectra results indicate incorporation of the SPEEK matrix with AIL and nano-SiO2. Scanning electron microscopy (SEM) and X–ray diffraction (XRD) images revealed that incorporation of nano-SiO2 make the ternary composite membranes more flexible. The maximum ion exchange capacity (IEC) value was 3.25 meq/g, and the net structure formed by the nano-SiO2 not only retarded AIL leaching, but also increased the proton conductivity of the composite membranes. AIL leaching from the membranes was between 20% and 30%, which was lower than that of the SPEEK/AIL membrane. The maximum proton conductivity for the SPEEK/AIL/SiO2 membranes reached 10.73 mS/cm at 393 K.

Perovskite oxide and carbonate composite membrane for carbon dioxide transport

A novel La0.6Sr0.4Co0.2Fe0.8O3−δ based ternary carbonate composite membrane was developed via melting impregnation. The enhanced carbon dioxide permeability is due to the existence of La0.6Sr0.4Co0.2Fe0.8O3−δ, a mixed ionic-electronic conductor, and the carbonate phases. The composite membrane greatly promotes the CO2 surface reaction rate to form CO32− and the subsequent ionic transport rate. To further understand the mechanism, the effect of O2 on carbon dioxide permeability was also analyzed under fuel gas conditions.

Sulfonated fluorinated block copolymer containing naphthalene unit/sulfonated polyvinylidene-co-hexafluoropropylene/functionalized silicon dioxide ternary composite membrane for low-humidity fuel cell applications

A ternary composite membrane, composed of a sulfonated fluorinated block copolymer containing naphthalene unit (SFBCN), sulfonated polyvinylidene fluoride-co-hexafluoropropylene (SPVdF-HFP), and functionalized silicon dioxide (FSiO2), was fabricated via a simple solution casting method for use as a suitable proton exchange membrane in low-humidity fuel cells. The morphological and structural characterizations verify the successful formation of the ternary composite membrane. TGA and DSC analyses revealed the suitability of the materials for fuel cell applications. The increased water uptake, IEC, and proton conductivity values with increasing hydrophilicity of membranes were obtained by thorough measurements. The fabricated ternary composite membrane containing 10 wt% FSiO2 exhibited a superior proton conductivity (12.3 mS/cm) under dehydrated conditions (90 °C at 40% RH) over the Nafion 117 (7.8 mS/cm) membrane, while at 90 °C at 100% RH, it exhibited a comparable H+ conductivity (93.1 mS/cm) to Nafion 117 (112 mS/cm) membrane.

Flexible electrospun MWCNTs/Ag3PO4/PAN ternary composite fiber membranes with enhanced photocatalytic activity and stability under visible-light irradiation

Semiconductor photocatalysis is a promising technology for removing contaminants from water. Particularly, visible-light photocatalysis has attracted much attention because of its potential to utilize solar energy. However, nano-sized visible-light-driven photocatalysts easily aggregate during water treatment. Besides, it is difficult to recycle them from treated systems. Therefore, it is of great importance to develop visible-light-responsive immobilized photocatalysts with high activity. In this work, MWCNTs/Ag3PO4/polyacrylonitrile (PAN) ternary composite fiber membranes (TCFMs) with good photocatalytic performance were fabricated by electrospinning technique combined with in situ Ag3PO4 forming reaction. Due to the addition of MWCNTs, the band gap of MWCNTs/Ag3PO4/PAN TCFMs became narrower than that of Ag3PO4/PAN binary composite fiber membranes (BCFMs), which made MWCNTs/Ag3PO4/PAN TCFMs be able to use light at longer wavelengths. Compared with Ag3PO4/PAN BCFMs, the as-prepared MWCNTs/Ag3PO4/PAN TCFMs showed enhanced photocatalytic activity and stability for degrading rhodamine B (RhB) in batch processing systems, which mainly ascribed to fast electron transfer from Ag3PO4 to MWCNTs and the resulting high electron–hole (e−–h+) separation efficiency. Radical trapping experiments revealed that holes (h+) and superoxide radicals (·O2−) played primary roles in RhB degradation. In addition, the flexible MWCNTs/Ag3PO4/PAN TCFMs also showed potential practical application in the continuous wastewater treatment by a suitable photocatalytic membrane reactor. This work provides a facile approach to prepare flexible supported photocatalytic membrane with visible-light response, high activity and good stability.

The development of Speek/Pva/Teos blend membrane for proton exchange membrane fuel cells

Sulfonated poly ether ether ketone (SPEEK) has high potential for proton exchange membrane fuel cell (PEMFC) application and has been widely considered as most promising alternative to commercial membranes. In this study a novel ternary composite membrane consisting of SPEEK/poly (vinyl alcohol) (PVA) and tetraethyl ortosilicate (TEOS) were prepared by blending and casting method. The obtained samples were characterized by FT-IR, dynamic mechanical analysis (DMA), electrochemical impedance spectroscopy (EIS), oxidative and hydrolytic stability, water uptake capacity, swelling property and ion exchange capacity tests. According to these characterization test results, the addition of PVA in the membrane structure increased the mechanical strength and in addition TEOS is easily incorporated into the membrane structure because of the presence of modifiable groups in PVA. The addition of TEOS to blend membranes prevented water loss at high temperatures and TEOS addition indirectly increased the proton conductivity of the membranes. The highest performance of 600 mA/cm2 was obtained SP90/PV10/TE coded membrane at 0.6 V cell potential and fuel cell operate at 1 atm and 80 °C. At the same conditions Nafion 117 gave 400 mA/cm2. This study shows that blend membrane seems to be a promising alternative membrane for PEMFC application.