Alignment of functionalized multiwalled carbon nanotubes in forward osmosis membrane support layer induced by electric and magnetic fields

Samieirad, S.; Mousavi, Seyed Mahmoud; Saljoughi, Ehsan

doi:10.1016/j.powtec.2020.02.017

Cited by 15 publications

(4 citation statements)

References 55 publications

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“…The peaks at 1580 and 1480 cm À1 belong to the C═C groups, and the peaks at 1290 and 1320 cm À1 belong to the S(═O 2 ) groups. 39,40 According to Figure 4, no significant peak is observed in the Gr spectrum, which is consistent with the results reported in the researches of Wang et al 41 and Mousavinezhad et al 22 In the spectra of nanocomposite membranes (M-1-M-4), the characteristic peaks of PPSU mentioned earlier can be seen, but no new peak is observed, which agrees well with the previous literature. 22 It should be noted that the intensity of the C═C and S(═O 2 )…”

Section: Attenuated Total Reflection Fourier Transform Infrared Spectroscopysupporting

confidence: 91%

Preparation of polyphenylsulfone/graphene nanocomposite membrane for the pervaporation separation of cumene from water

Rostami

Saljoughi

Mousavi

et al. 2021

Polymers for Advanced Techs

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Polyphenylsulfone (PPSU) was applied for the first time in the hydrophobic PV process. Nanocomposite membranes of PPSU/graphene (Gr) nanosheets were prepared and used to separate isopropyl benzene (cumene) from water via pervaporation (PV).Analysis of the mechanical properties of the membranes showed that the tensile strength and Young's modulus had an increasing trend with the incorporation of Gr into PPSU. The water contact angle of the membranes had a rising trend with the addition of Gr, confirming the improved hydrophobicity of membranes. In the PV experiments, the membrane containing 3.5 wt% Gr provided the highest separation factor, which was 4.5-fold as much as that of the neat PPSU membrane. Cumene separation from water by the PPSU/3.5 wt% Gr membrane was associated with the total flux of 132.73 gMH, the separation factor of 1566.36, and the PSI of 208,124.8 gMH.

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Section: Attenuated Total Reflection Fourier Transform Infrared Spectroscopysupporting

confidence: 91%

Preparation of polyphenylsulfone/graphene nanocomposite membrane for the pervaporation separation of cumene from water

Rostami

Saljoughi

Mousavi

et al. 2021

Polymers for Advanced Techs

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“…Furthermore, the agglomeration of CNTs reduces their effective interfacial area (Langari et al, 2018) and suppresses the beneficial effect of CNTs on membrane porosity. Thus, membrane porosity was reduced with CNTs agglomeration (Samieirad et al, 2020). CTNs agglomeration is explained by the steric hindrance and electrostatic interactions among the CNTs and between the CNTs and the polymer chains (Vatanpour et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Preparation and characterization of forward osmosis cellulose acetate butyrate/OH‐functionalized multiwalled carbon nanotube membrane for the concentration of bitter orange juice

Bidaki

Mousavi

Kiani

et al. 2023

J Food Process Engineering

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As an essential process in food industry, fruit dewatering should have the least impact on the nutritional values of the product. In this research, bitter orange juice was concentrated via the forward osmosis (FO) process for the first time. For this purpose, cellulose acetate butyrate (CAB)/OH-functionalized multiwalled carbon nanotubes (FMWCNTs) membranes were prepared using various nanofiller concentrations. The obtained membranes were characterized in terms of their morphology, porosity, water contact angle, chemical structure, tensile properties, and pure water flux. During the FO process, NaCl solution was applied as the draw solution (DS), and the concentration of NaCl was varied (1.2, 2.2, and 4.2 M) to assess its effect on the process performance. Increasing FMWCNTs loading in the casting solution up to 0.3 wt% boosted the membrane porosity, hydrophilicity, elastic modulus, and pure water flux. The CAB membrane incorporated with 0.3 wt% nanofiller and the DS with 4.2 M NaCl concentration represented the highest water flux (29.93 L/m 2 h) in the FO experiment and provided the maximum turbidity (1545 NTU) and viscosity (4.64 cP) of the treated feed. According to the obtained results, the developed CAB/FMWCNTs membrane proved promising in the FO concentration of fruit juice. Practical ApplicationsBitter orange juice was concentrated via the FO process using the developed CAB/OH-FMWCNTs membranes. According to the results, water flux, and thus the dewatering efficiency increased and reached its highest value using the CAB membrane incorporated with 0.3% FMWCNTs. Since membrane processes operate at low temperatures and do not deteriorate the concentrate quality, FO concentration of bitter orange juice using the membrane modified in this study can be a superior alternative to the conventional thermal methods.

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“…Fiber-reinforced polymer composites with carbon nanofibers or carbon nanotubes provide an opportunity to obtain anisotropic valve prosthesis use [ 173 , 174 ]. Similarly to SIBS reinforced with Dacron, the fibers of a stronger polymer introduced at the macro level do not provide the desired resistance to plastic deformation under cyclic loading since the polymer base significantly affects the results [ 149 ].…”

Section: Challenges and Future Prospectsmentioning

confidence: 99%

Polymeric Heart Valves Will Displace Mechanical and Tissue Heart Valves: A New Era for the Medical Devices

Резвова

Klyshnikov

Грицкевич³

et al. 2023

IJMS

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The development of a novel artificial heart valve with outstanding durability and safety has remained a challenge since the first mechanical heart valve entered the market 65 years ago. Recent progress in high-molecular compounds opened new horizons in overcoming major drawbacks of mechanical and tissue heart valves (dysfunction and failure, tissue degradation, calcification, high immunogenic potential, and high risk of thrombosis), providing new insights into the development of an ideal artificial heart valve. Polymeric heart valves can best mimic the tissue-level mechanical behavior of the native valves. This review summarizes the evolution of polymeric heart valves and the state-of-the-art approaches to their development, fabrication, and manufacturing. The review discusses the biocompatibility and durability testing of previously investigated polymeric materials and presents the most recent developments, including the first human clinical trials of LifePolymer. New promising functional polymers, nanocomposite biomaterials, and valve designs are discussed in terms of their potential application in the development of an ideal polymeric heart valve. The superiority and inferiority of nanocomposite and hybrid materials to non-modified polymers are reported. The review proposes several concepts potentially suitable to address the above-mentioned challenges arising in the R&D of polymeric heart valves from the properties, structure, and surface of polymeric materials. Additive manufacturing, nanotechnology, anisotropy control, machine learning, and advanced modeling tools have given the green light to set new directions for polymeric heart valves.

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Alignment of functionalized multiwalled carbon nanotubes in forward osmosis membrane support layer induced by electric and magnetic fields

Cited by 15 publications

References 55 publications

Preparation of polyphenylsulfone/graphene nanocomposite membrane for the pervaporation separation of cumene from water

Preparation of polyphenylsulfone/graphene nanocomposite membrane for the pervaporation separation of cumene from water

Preparation and characterization of forward osmosis cellulose acetate butyrate/OH‐functionalized multiwalled carbon nanotube membrane for the concentration of bitter orange juice

Polymeric Heart Valves Will Displace Mechanical and Tissue Heart Valves: A New Era for the Medical Devices

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