FTIR Study of Enhanced Polymeric Blend Membrane with Amines

Mushtaq, Asim; Mukhtar, Hilmi; Shariff, Azmi Mohd

doi:10.19026/rjaset.7.466

Cited by 53 publications

(35 citation statements)

References 15 publications

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“…The ATR-FTIR spectra of the formulated membranes are shown in Figure 2. The strong peak of C 6 H 6 benzene ring stretch at 1587 cm -1 is the aromatic band of polyethersulfone [42]. The sharp peak at 1147 cm -1 is due to S=O group symmetric stretching vibration [43].…”

Section: Resultsmentioning

confidence: 98%

Polymer Concentration and Solvent Variation Correlation with the Morphology and Water Filtration Analysis of Polyether Sulfone Microfiltration Membrane

Alvi¹,

Khalid²,

Ahmad

et al. 2019

Advances in Polymer Technology

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Microfiltration flat sheet membranes of polyether sulfone (PES) were fabricated by incorporating varying concentrations of polymer and investigated the influence of substituting solvents. The membranes were prepared via immersion precipitation method. Different solvents that included NMP (N-methyl-2-pyrrolidone), DMF (dimethylformamide), and THF (tetrahydrofuran) were used to analyse their effect on the performance and morphology of the prepared membranes. Two different coagulation bath temperatures were used to investigate the kinetics of membrane formation and subsequent effect on membrane performance. The maximum water flux of 141 ml/cm2.h was observed using 21% of PES concentration in NMP + THF cosolvent system. The highest tensile strength of 29.15 MPa was observed using membrane prepared with 21% PES concentration in NMP as solvent and coagulation bath temperature of 25°C. The highest hydraulic membrane resistance was reported for membrane prepared with 21% PES concentration in NMP as solvent. Moreover, the lowest contact angle of 67° was observed for membrane prepared with 15% of PES concentration in NMP as solvent with coagulation bath temperature of 28°C. Furthermore, the Hansen solubility parameter was used to study the effect on the thermodynamics of membrane formation and found to be in good correlation with experimental observation and approach in the present work.

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Section: Resultsmentioning

confidence: 98%

Polymer Concentration and Solvent Variation Correlation with the Morphology and Water Filtration Analysis of Polyether Sulfone Microfiltration Membrane

Alvi¹,

Khalid²,

Ahmad

et al. 2019

Advances in Polymer Technology

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“…Besides, there were covalent bonds between alginate chains and PAM through amidation by amine groups of PAM and carboxyl groups of alginate (Sun et al, 2012) as described in Figure 2 a and Scheme 1 b. This was evidenced by the fact that the relative intensity of C-N (1020 cm -1 ) to C-O (1044 cm -1 ) of PAMALG, PMAW and PMACa was higher than that of PMcata, PMW and PMCa (Mushtaq, Mukhtar, & Shariff, 2014;Sun et al, 2012;Tripathi & Mishra, 2012), being 1.078, 1.067 and 1.036 versus 0.954, 0.931 and 0.945. The PAM-alginate covalent bonds might lead to effective load transfer and thus good mechanical properties.…”

Section: Formation Of Nanocomposite Hydrogelsmentioning

confidence: 96%

Tough, resilient and pH-sensitive interpenetrating polyacrylamide/alginate/montmorillonite nanocomposite hydrogels

Chen

2018

Carbohydrate Polymers

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Alginate, a naturally abundant and environmentally friendly carbohydrate polymer, can form ionically crosslinked hydrogels with Ca. Therefore, a novel design of interpenetrating nanocomposite hydrogels (PMACa) is proposed, which is synthesized by in situ polymerization of acrylamide in the presence of montmorillonite platelets and sodium alginate at an elevated temperature, followed by secondary crosslinking of the hydrogel using a CaCl solution. PMACa displays superior tensile strength and strain at break under the fully swollen state, as well as rapid shape recovery and insignificant residual strain upon the release of an external load. Furthermore, PMACa also shows remarkable reversible pH-dependent swelling/deswelling behaviors due to the pH-sensitivities of alginate network and montmorillonite platelets. These new high-performance interpenetrating alginate-containing nanocomposite hydrogels may find potential applications as aquatic load-bearing materials for artificial tissues, actuators, agriculture, etc.

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“…Other bonds (i.e., for C, H, and O) were repeatedly analyzed in a variety of membranes. Blending hydrophilic polymer into the dope solution can affect its phase inversion behavior, and thus, change the fabricated membrane properties [17,18]. Figure 3 displays a three-dimensional AFM image of the upper surfaces of the PPSU membranes de-stained at various PES concentration in the PPSU dope solution.…”

Section: Influence Of Pes On Ppsu Membrane Morphologymentioning

confidence: 99%

Removal of Dye from a Leather Tanning Factory by Flat-Sheet Blend Ultrafiltration (UF) Membrane

et al. 2020

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In this work, a flat-sheet blend membrane was fabricated by a traditional phase inversion method, using the polymer blends poly phenyl sulfone (PPSU) and polyether sulfone (PES) for the ultrafiltration (UF) application. It was hypothesized that adding PES to the PPSU polymer blend would improve the properties of the PPSU membrane. The effect of the PES concentration on the blend membrane properties was investigated extensively. The characteristics of PPSU-PES blend membranes were investigated using atomic force microscopy (AFM), scanning electron microscopy (SEM), contact angle measure, and contaminant (dye) elimination efficiency. This study showed that PES clearly affected the structural formation of the blended membranes. A considerable increase in the average roughness (about 93%) was observed with the addition of 4% PES, with a higher mean pore size accompanied by a rise in the pores' density on the surface of the membrane. The addition of up to 4% PES had a significant influence on the hydrophilic character of the PPSU-PES membrane, by lowering the value of the contact angle (CA) (i.e., to 56.9 • ). The performance of the PPSU-PES composite membranes' UF performance was systematically investigated, and the membrane pure water permeability (PWP) was enhanced by 25% with the addition of 4% PES. The best separation removal factor achieved in the current investigation for dye (Drupel Black NT) was 96.62% for a PPSU-PES (16:4 wt./wt.%) membrane with a 50% feed dye concentration.Membranes 2020, 10, 47 2 of 17 the removal of a variety of dye molecules from industrial effluents. Hence, a number of investigations have reported using UF and nanofiltration technologies in textile manufacturing industries [4].Alventosa-deLara et al.[5] studied the influence of trans-membrane pressure (TMP) and cross-flow velocity (CFV) on the ultrafiltration (UF) ceramic membrane performance for various concentrations of dye (50-500 ppm). They concluded that the permeate flux increases with a higher TMP and CFV as well as with a low concentration of feed, up to a maximum flux of 0.267 m 3 /(m 2 h). Moreover, the efficiency of the UF treatment was estimated by the dye rejection coefficient. Alventosa-deLara et al. [5] reported considerable dye rejection, regardless of the examined conditions, with steady-state rejection higher than 79.9% for 50 ppm and approximately 73.2% for 500 ppm. Moideen et al.[6] prepared a polysulfone-poly phenyl sulfone (PSF-PPSU blend UF membrane for Pb 2+ and Cd 2+ heavy metal removal, and the blend membrane displayed improved performance and hydrophilicity as well as an antifouling feature, as compared with the pristine PSF polymer membrane. Contaminant (e.g., heavy metals) rejection was completed by complexing the metal ions with polyaziridine, which has displayed a good rejection of 99.5% and 95.5% of Pb 2+ and Cd 2+ , respectively. Since 2012, poly phenyl sulfone (PPSU) emerged as an excellent polymer material for membrane fabrication due to its advantageous characteristics, especially for NF application [...

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FTIR Study of Enhanced Polymeric Blend Membrane with Amines

Cited by 53 publications

References 15 publications

Polymer Concentration and Solvent Variation Correlation with the Morphology and Water Filtration Analysis of Polyether Sulfone Microfiltration Membrane

Polymer Concentration and Solvent Variation Correlation with the Morphology and Water Filtration Analysis of Polyether Sulfone Microfiltration Membrane

Tough, resilient and pH-sensitive interpenetrating polyacrylamide/alginate/montmorillonite nanocomposite hydrogels

Removal of Dye from a Leather Tanning Factory by Flat-Sheet Blend Ultrafiltration (UF) Membrane

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