Institution
Universiti Teknologi Petronas
Education•Ipoh, Malaysia•
About: Universiti Teknologi Petronas is a education organization based out in Ipoh, Malaysia. It is known for research contribution in the topics: Adsorption & Ionic liquid. The organization has 6127 authors who have published 11284 publications receiving 119400 citations.
Topics: Adsorption, Ionic liquid, Catalysis, Membrane, Biomass
Papers published on a yearly basis
Papers
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TL;DR: In this paper, a polyamide 6 (PA6) and montmorillonite (MMT) modified with an octadecylammonium salt was produced via melt compounding in a co-rotating twin-screw extruder.
Abstract: Polymer-layered silicate nanocomposites (PLSN), based on polyamide 6 (PA6) and montmorillonite (MMT) modified with an octadecylammonium salt, were produced via melt compounding in a co-rotating twin-screw extruder. Wide angle X-ray diffraction (WAXD) and TEM revealed a PLSN containing 3.3% by weight (wt.-%) of MMT to exhibit a mixed exfoliated/intercalated morphology, consisting mainly of individual silicate lamellae together with some intercalated stacks, resulting in a mean value of 1.8 lamellae per particle. In contrast, a PLSN containing a higher level of 7.2 wt.-% MMT exhibited a more ordered intercalated structure, consisting mainly of a distribution of lamellae stacks with a mean value of 3.8 lamellae per particle. The dispersion of MMT in the PLSN generated very large polymer-filler interfacial areas, resulting in significant increase in the volume of constrained PA6 chain segments. Consequently, significant changes in the ratio of α/γ crystallites and in the thermal behaviour of the matrix PA6 were observed during WAXD, DSC and dynamic-mechanical thermal analysis (DMTA) studies of the PLSN. In particular, damping data from DMTA showed relaxations between T g and T m resulting from amorphous polymer chain segments constrained at the polymer-filler interface, indicating the formation of a continuous phase of constrained polymer. In contrast, a PA6 microcomposite formed using unmodified MMT generated much lower polymer-filler interfacial area, with most of the MMT residing within large, poorly wetted aggregates. Consequently, changes to the thermal behaviour of the matrix PA6 were much less significant than those induced in the PLSN.
47 citations
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TL;DR: It was found that reinforced nanocomposites exhibited enhanced mechanical properties as compared to non-reinforced material and the coordination effects among OPB, MWCNTs and PVA polymer hydrogels can produce a promising adsorbent material for wastewater treatment applications.
Abstract: Polyvinyl alcohol (PVA) hydrogel are still restricted for some applications because their lower mechanical strength and thermal stability. The PVA-based composites are drawing attention for the removal of heavy metals based on their specific functionality in adsorption process. The main objective of this work is to synthesize oil palm bio-waste (OPB)/multiwalled carbon nanotubes (MWCNTs) reinforced PVA hydrogels in the presence of N,N'-methylenebisacrylamide (NMBA) as a crosslinking agent and ammonium persulfate (APS) as an initiator via simple in-situ polymerization technique. The as-prepared reinforced nanocomposites were characterized by FESEM, BET surface area, differential scanning calorimetry (DSC), TGA and FTIR analysis. The possible influence of OPB and MWCNTs on the tensile strength, elongation at break and elastic modulus of the samples were investigated. It was found that reinforced nanocomposites exhibited enhanced mechanical properties as compared to non-reinforced material. The evaluation of reinforced nanocomposites was tested by the removal of Pb(II) aqueous solutions in a batch adsorption system. The pseudo-second-order kinetic model was used to illustrate the adsorption kinetic results and Langmuir isotherm was more suitable to fit the equilibrium results providing maximum adsorption capacities. The evaluation of thermodynamic parameters describes the spontaneous, endothermic and chemisorption adsorption process while activation energy reveals the physical adsorption mechanism. Therefore, the coordination effects among OPB, MWCNTs and PVA polymer hydrogels can produce a promising adsorbent material for wastewater treatment applications.
47 citations
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TL;DR: In this article, a mixed-integer linear programming (MILP) model was proposed for the optimal design of an on-grid hybrid power system (HPS) with the minimum net present value (NPV) of the overall electricity production cost and the selection of the optimum energy storage technology.
47 citations
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TL;DR: In this paper, the synergic kinetic inhibition effect of 1-Ethyl-3methy-limidazolium chloride (EMIM-Cl) + Polyvinylpyrrolidone (PVP) on the induction time and gas uptake during carbon dioxide (CO2) gas hydrate formation is reported.
47 citations
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TL;DR: In this paper, a characterization study portrayed the PVDF-TiO2 hollow fiber photocatalytic membranes with increasing TiO2 nanoparticles exhibited an improvement in surface hydrophilicity, porosity and tensile strength; besides, having an appropriate surface morphology and topology to remove the surfactants from produced water.
47 citations
Authors
Showing all 6203 results
Name | H-index | Papers | Citations |
---|---|---|---|
Muhammad Imran | 94 | 3053 | 51728 |
Muhammad Shahbaz | 92 | 1001 | 34170 |
Muhammad Farooq | 92 | 1341 | 37533 |
Markus P. Schlaich | 74 | 472 | 25674 |
Abdul Basit | 74 | 570 | 20078 |
Keat Teong Lee | 71 | 276 | 16745 |
Abdul Latif Ahmad | 68 | 490 | 22012 |
Cor J. Peters | 52 | 262 | 9472 |
Suzana Yusup | 52 | 437 | 8997 |
Muhammad Nadeem | 52 | 409 | 9649 |
Umer Rashid | 51 | 381 | 10081 |
Hamidi Abdul Aziz | 49 | 345 | 9083 |
Serge Palacin | 45 | 201 | 8376 |
Muhammad Awais | 43 | 272 | 6704 |
Zakaria Man | 43 | 245 | 5301 |