Environmental remediation through various composite membranes moieties: Performances and thermomechanical properties

Khurram, Abdul Rehman; Rafiq, Sikander; Tariq, Alisha; Jamil, Asif; Iqbal, Tanveer; Mahmood, Hamayoun; Mehdi, Muhammad; Abdulrahman, Aymn; Ali, Abulhassan; Akhtar, Muhammad Saeed; Asif, Saira

doi:10.1016/j.chemosphere.2022.136613

Cited by 3 publications

(5 citation statements)

References 196 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, it was observed that the addition of PVAc to the PEI matrix resulted in a decrease in thermal properties as the proportion of the rubbery phase increased. In reference to the degradation temperature, neat PEI displayed a degradation temperature of 482 °C, which decreased to 340 °C for PP (2). These findings imply that adding rubbery Furthermore, it was observed that the addition of PVAc to the PEI matrix resulted in a decrease in thermal properties as the proportion of the rubbery phase increased.…”

Section: Thermal Analysismentioning

confidence: 90%

“…The spacing between indents was adjusted to prevent overlapping of the internal stress generated around each indent. In the case of the neat PEI sample, the indenter penetrated up to a maximum contact depth of 7.7 µm, while this value increased to 14.00 µm for PP (2). However, the value decreased to 5.08 µm for the blend sample incorporating 2 wt.% of TiO2.…”

Section: Surface Mechanical Analysismentioning

confidence: 92%

“…Membrane technology resulting in benefits in terms of energy efficiency and from an economical point of view is regarded as a viable emerging technology in gas separation applications [ 1 , 2 ]. Nevertheless, due to the inherent trade-off between gas permeability and selectivity, commercially available membranes (either organic or inorganic) used in gas separation are available with particular constraints [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of TiO2 on Thermal, Mechanical, and Gas Separation Performances of Polyetherimide–Polyvinyl Acetate Blend Membranes

et al. 2023

Self Cite

View full text Add to dashboard Cite

Blend membranes consisting of two polymer pairs improve gas separation, but compromise mechanical and thermal properties. To address this, incorporating titanium dioxide (TiO2) nanoparticles has been suggested, to enhance interactions between polymer phases. Therefore, the objective of this study was to investigate the impact of TiO2 as a filler on the thermal, surface mechanical, as well as gas separation properties of blend membranes. Blend polymeric membranes consisting of polyetherimide (PEI) and polyvinyl acetate (PVAc) with blend ratios of (99:1) and (98:2) were developed via a wet-phase inversion technique. In the latter, TiO2 was incorporated in ratios of 1 and 2 wt.% while maintaining a blend ratio of (98:2). TGA and DSC analyses were used to examine thermal properties, and nano-indentation tests were carried out to ascertain surface mechanical characteristics. On the other hand, a gas permeation set-up was used to determine gas separation performance. TGA tests showed that blend membranes containing TiO2 had better thermal characteristics. Indentation tests showed that TiO2-containing membranes exhibited greater surface hardness compared to other membranes. The results of gas permeation experiments showed that TiO2-containing membranes had better separation characteristics. PEI–PVAc blend membranes with 2 wt.% TiO2 as filler displayed superior separation performance for both gas pairs (CO2/CH4 and CO2/N2). The compatibility between the rubbery and glassy phases of blend membranes was improved as a result of the inclusion of TiO2, which further benefited their thermal, surface mechanical, and gas separation performances.

show abstract

Section: Thermal Analysismentioning

confidence: 90%

Section: Surface Mechanical Analysismentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of TiO2 on Thermal, Mechanical, and Gas Separation Performances of Polyetherimide–Polyvinyl Acetate Blend Membranes

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

“…315,316 Currently, the applications of MMMs are limited, including in CO 2 /N 2 and CO 2 /CH 4 systems. 317,318 Figure 15 shows Robeson's plots for the CO 2 /N 2 and CO 2 /CH 4 separations using MMMs doped with IL/MOF composites. Table 4 lists MMMs doped with IL/MOF composites for the CO 2 /N 2 and the CO 2 /CH 4 separation.…”

Section: Mixed Matrix Membranementioning

confidence: 99%

“…For membrane separation, the solubility selectivity, diffusion selectivity, and reactivity selectivity of gases are considered in separating gas mixtures, and the molecular properties of the membrane materials are considered. , Currently, the applications of MMMs are limited, including in CO 2 /N 2 and CO 2 /CH 4 systems. , Figure shows Robeson’s plots for the CO 2 /N 2 and CO 2 /CH 4 separations using MMMs doped with IL/MOF composites. Table lists MMMs doped with IL/MOF composites for the CO 2 /N 2 and the CO 2 /CH 4 separation.…”

Section: Il/mof Composites For Membrane Separationmentioning

confidence: 99%

Ionic Liquids Functionalized MOFs for Adsorption

Chen

Guo

et al. 2023

Chem. Rev.

View full text Add to dashboard Cite

Metal–organic frameworks (MOFs) and ionic liquids (ILs) represent promising materials for adsorption separation. ILs incorporated into MOF materials (denoted as IL/MOF composites) have been developed, and IL/MOF composites combine the advantages of MOFs and ILs to achieve enhanced performance in the adsorption-based separation of fluid mixtures. The designed different ILs are introduced into the various MOFs to tailor their functional properties, which affect the optimal adsorptive separation performance. In this Perspective, the rational fabrication of IL/MOF composites is presented, and their functional properties are demonstrated. This paper provides a critical overview of an emergent class of materials termed IL/MOF composites as well as the recent advances in the applications of IL/MOF composites as adsorbents or membranes in fluid separation. Furthermore, the applications of IL/MOF in adsorptive gas separations (CO2 capture from flue gas, natural gas purification, separation of acetylene and ethylene, indoor pollutants removal) and liquid separations (separation of bioactive components, organic-contaminant removal, adsorptive desulfurization, radionuclide removal) are discussed. Finally, the existing challenges of IL/MOF are highlighted, and an appropriate design strategy direction for the effective exploration of new IL/MOF adsorptive materials is proposed.

show abstract