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Choudhary P, Saini N, Yoon MH, Awasthi K, Pandey K. ZIF-8 @polycarbonate nanocomposite membranes for improved permeability and selectivity for hydrogen gas. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:105387-105397. [PMID: 37713078 DOI: 10.1007/s11356-023-29650-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 08/29/2023] [Indexed: 09/16/2023]
Abstract
Through this work, we are reporting high-performance ZIF-8 @polycarbonate nanocomposite membranes with satisfactory structural stability for improving the gas separation performance. ZIF-8 nanoparticles were synthesised using the wet chemical route with cubic morphology and controlled size using CTAB as a surfactant. The membranes were prepared using the solution casting method by adding ZIF-8 filler at various concentrations. The synthesised filler material and MMMs were characterised through X-ray diffraction spectroscopy (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and RAMAN spectroscopy techniques. The gas separation measurements were taken using H2, CO2, and N2 gas in the purest form. The SEM results confirm the formation of spherulite-like morphology with the addition of ZIF-8 due to the crystallisation of the polymer, which increased the membrane's free volume and opened up additional pathways for the transportation of the gas molecules. The gas separation results confirmed that the 15 wt% ZIF-8/PC nanocomposite membrane showed the maximum H2 permeability of 180,970 barrer with an increment of 316.03%, while H2/CO2 and H2/N2 selectivity showed the increments of 89.43% and 103.64%, respectively. Therefore, this PC/ZIF-8 system seems to be a promising approach to developing new H2 selective membranes with high gas permeability and gas selectivity values.
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Affiliation(s)
- Prashant Choudhary
- Materials Research Centre, Malaviya National Institute of Technology Jaipur, Rajasthan, 302017, India
| | - Nishel Saini
- Department of Physics, Malaviya National Institute of Technology Jaipur, Rajasthan, 302017, India
| | - Myung Han Yoon
- Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, Republic of Korea
| | - Kamlendra Awasthi
- Department of Physics, Malaviya National Institute of Technology Jaipur, Rajasthan, 302017, India
| | - Kamakshi Pandey
- Materials Research Centre, Malaviya National Institute of Technology Jaipur, Rajasthan, 302017, India.
- Department of Physics, Malaviya National Institute of Technology Jaipur, Rajasthan, 302017, India.
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Su E, Bilici C, Bayazit G, Ide S, Okay O. Solvent-Free UV Polymerization of n-Octadecyl Acrylate in Butyl Rubber: A Simple Way to Produce Tough and Smart Polymeric Materials at Ambient Temperature. ACS APPLIED MATERIALS & INTERFACES 2021; 13:21786-21799. [PMID: 33908244 DOI: 10.1021/acsami.1c03814] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
One of the most fascinating challenges in recent years has been to produce mechanically robust and tough polymers with smart functions such as self-healing and shape-memory behavior. Here, we report a simple and versatile strategy for the preparation of a highly tough and highly stretchable interconnected interpenetrating polymer network (c-IPN) based on butyl rubber (IIR) and poly(n-octadecyl acrylate) (PC18A) with thermally induced healing and shape-memory functions. Solvent-free UV polymerization of n-octadecyl acrylate (C18A) at 30 ± 2 °C in the presence of IIR leads to IIR/PC18A c-IPNs with sea-island or co-continuous morphologies depending on their IIR contents. The lamellar crystals with a melting temperature Tm of 51-52 °C formed by side-by-side packed octadecyl (C18) side chains are responsible for more than 99% of effective cross-links in c-IPNs, the rest being hydrophobic associations and chemical cross-links. The c-IPNs exhibit varying stiffness (9-34 MPa), stretchability (72-740%), and a significantly higher toughness (1.9-12 MJ·m-3) than their components, which can be tuned by changing the IIR/PC18A weight ratio. The properties of c-IPNs could also be tuned by incorporating a second, noncrystallizable hydrophobic monomer, namely, lauryl methacrylate (C12M), in the melt mixture. We show that the lamellar clusters acting as sacrificial bonds break at the yield point by dissipation of energy, while the ductile amorphous continuous phase keeps the structure together, leading to the toughness improvement of c-IPNs. They exhibit a two-step healing process with >90% healing efficiency with respect to the modulus and a complete shape-recovery ratio induced by heating above Tm of alkyl crystals. The temperature-induced healing occurs via a quick step where C18 bridges form between the damaged surfaces followed by a slow step controlled by the interdiffusion of C18A segments in the bulk. We also show that the strategy developed here is suitable for a variety of rubbers and n-alkyl (meth)acrylates of various side-chain lengths.
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Affiliation(s)
- Esra Su
- Department of Chemistry, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
| | - Cigdem Bilici
- Department of Chemistry, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
| | - Gozde Bayazit
- Department of Physics Engineering, Hacettepe University, 06800 Beytepe, Ankara, Turkey
| | - Semra Ide
- Department of Physics Engineering, Hacettepe University, 06800 Beytepe, Ankara, Turkey
- Department of Nanotechnology and Nanomedicine, Hacettepe University, 06800 Beytepe, Ankara, Turkey
| | - Oguz Okay
- Department of Chemistry, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
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Yakubu M, Yilbas BS, Abubakr AA, Al-Qahtani H. Droplet Rolling and Spinning in V-Shaped Hydrophobic Surfaces for Environmental Dust Mitigation. Molecules 2020; 25:E3039. [PMID: 32635187 PMCID: PMC7412493 DOI: 10.3390/molecules25133039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 06/28/2020] [Accepted: 06/30/2020] [Indexed: 11/18/2022] Open
Abstract
The motion of a water droplet in a hydrophobic wedge fixture was examined to assess droplet rolling and spinning for improved dust mitigation from surfaces. A wedge fixture composed of two inclined hydrophobic plates had different wetting states on surfaces. Droplet rolling and spinning velocities were analyzed and findings were compared with the experiments. A wedge fixture was designed and realized using a 3D printing facility and a high speed recording system was adopted to evaluate droplet motion in the wedge fixture. Polycarbonate sheets were used as plates in the fixture, and solution crystallization and functionalized silica particles coating were adopted separately on plate surfaces, which provided different wetting states on each plate surface while generating different droplet pinning forces on each hydrophobic plate surface. This arrangement also gave rise to the spinning of rolling droplets in the wedge fixture. Experiments were extended to include dust mitigation from inclined hydrophobic surfaces while incorporating spinning- and rolling droplet and rolling droplet-only cases. The findings revealed the wedge fixture arrangement resulted in spinning and rolling droplets and spinning velocity became almost 25% of the droplet rolling velocity, which agrees well with both predictions and experiments. Rolling and spinning droplet gave rise to parallel edges droplet paths on dusty hydrophobic surfaces while striations in droplet paths were observed for rolling droplet-only cases. Spinning and rolling droplets mitigated a relatively larger area of dust on inclined hydrophobic surfaces as compared to their counterparts corresponding to rolling droplet-only cases.
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Affiliation(s)
- Mubarak Yakubu
- Mechanical Engineering Department, KFUPM, Dhahran 31261, Saudi Arabia; (M.Y.); (A.A.A.); (H.A.-Q.)
| | - Bekir Sami Yilbas
- Mechanical Engineering Department, KFUPM, Dhahran 31261, Saudi Arabia; (M.Y.); (A.A.A.); (H.A.-Q.)
- Center of Research Excellence in Renewable Energy (CoRE-RE), KFUPM, Dhahran 31261, Saudi Arabia
- Senior Researcher at K.A.CARE Energy Research & Innovation Center, Dhahran 31261, Saudi Arabia
| | - Abba A. Abubakr
- Mechanical Engineering Department, KFUPM, Dhahran 31261, Saudi Arabia; (M.Y.); (A.A.A.); (H.A.-Q.)
| | - Hussain Al-Qahtani
- Mechanical Engineering Department, KFUPM, Dhahran 31261, Saudi Arabia; (M.Y.); (A.A.A.); (H.A.-Q.)
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Wu Z, Li Y, Wang M, Li J, Wang Z. Comparative study on the surface activity and adsorption behavior of linear fatty alcohol ether carboxylic ester with fatty alcohol ether. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123696] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Yilbas BS, Al-Qahtani H, Al-Sharafi A, Bahattab S, Hassan G, Al-Aqeeli N, Kassas M. Environmental Dust Particles Repelling from A Hydrophobic Surface under Electrostatic Influence. Sci Rep 2019; 9:8703. [PMID: 31213611 PMCID: PMC6582155 DOI: 10.1038/s41598-019-44992-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 05/29/2019] [Indexed: 11/23/2022] Open
Abstract
Environmental dust particles repelling from a hydrophobic surface under the electrostatic influence are considered and the dynamics of the dust particles are analyzed incorporating the high speed camera. The velocity of the repelled dust particles are formulated using the force balance incorporating the forces associated with the electrostatic repulsion, particle adhesion, particle drag, and the inflight particles interaction under the charge influence. The functionalized silica particles are deposited on the glass surface towards achieving a hydrophobic wetting state on the surface. An electronic circuitry is designed and built while generating the electrostatic effect, in the pulse form, on the dust particles located on the surface of the hydrophobic plate. Findings revealed that functionalized silica particles deposited surface results in hydrophobic wetting state with contact angle in the order of 158° ± 2° and contact angle hysteresis of 2° ± 1°. The electrostatic impulsive force generated on the plate surface enables to repel most of the sizes of the dust particles; however, some of the small dust particles remain as the residues on the surface after the electrostatic influence. The dust particle velocity predicted from the analytical formulation agrees with that obtained from the high speed camera data. The pinning force of the small size particles (0.6 µm≤), due to adhesion on the surface, is found to be larger than the average size particles (∼1.2 µm), which in turn, suppresses these particles repelling from the surface under the electrostatic influence. The residues of the dust particles on the as received glass surface after dust repelling are more than those residues on the hydrophobic surface. This behavior is associated with the dust particles adhesion on the surface. Consequently, hydrophobic wetting state on the plate surface improves the dust particle repelling from the surface.
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Affiliation(s)
- B S Yilbas
- Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia.
- Center of Excellence in Renewable Energy, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia.
- Senior Researcher, K.A.CARE Energy Research & Innovation Center, Dhahran, Saudi Arabia.
| | - Hussain Al-Qahtani
- Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
| | - Abdullah Al-Sharafi
- Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
| | - Saeed Bahattab
- Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
- Researcher at K.A.CARE Energy Research, Innovation Center at Dhahran, Dhahran, Saudi Arabia
| | - Ghassan Hassan
- Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
- Center of Excellence in Renewable Energy, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
- Researcher at K.A.CARE Energy Research, Innovation Center at Dhahran, Dhahran, Saudi Arabia
| | - N Al-Aqeeli
- Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
| | - M Kassas
- Electrical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
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Yilbas BS, Ali H, Al-Sharafi A, Al-Aqeeli N, Abu-Dheir N, Demir K. Mobility of A Water Droplet on Liquid Phase of N-Octadecane Coated Hydrophobic Surface. Sci Rep 2018; 8:15060. [PMID: 30305659 PMCID: PMC6180037 DOI: 10.1038/s41598-018-33384-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 09/20/2018] [Indexed: 11/21/2022] Open
Abstract
A water droplet behavior on the liquid n-octadecane film is investigated. The coating of hydrophobic surface by N-octadecane film provides exchange of wetting state on the surface. The polycarbonate surface is crystallized and the functionalized silica particles are placed on the resulting surface prior to thin film coating of n-octadecane. A high-speed camera is used to monitor dynamic characteristics of the droplet on the inclined film. The findings reveal that deposition of thin n-octadecane film on hydrophobic surface results in reversibly exchange of the wetting state at the surface, which remains hydrophobic when n-octadecane film is in solid phase while it becomes hydrophilic when n-octadecane film liquefies. Droplet transition velocity predicted agrees well with the experimental data. Sliding mode of the water droplet governs droplet transition on the liquid surface. Droplet pinning force, due to interfacial tension, dominates over the other retention forces including drag and shear.
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Affiliation(s)
- Bekir Sami Yilbas
- Mechanical Engineering Department and Centre of Excellence in Renewable Energy, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia.
- Center of Research Excellence in Renewable Energy (CoRE-RE), King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, 31261, Saudi Arabia.
| | - Haider Ali
- Mechanical Engineering Department and Centre of Excellence in Renewable Energy, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
| | - Abdullah Al-Sharafi
- Mechanical Engineering Department and Centre of Excellence in Renewable Energy, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
| | - Nasser Al-Aqeeli
- Mechanical Engineering Department and Centre of Excellence in Renewable Energy, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
| | - Numan Abu-Dheir
- Mechanical Engineering Department and Centre of Excellence in Renewable Energy, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
| | - Kahraman Demir
- Mechanical Engineering Department and Centre of Excellence in Renewable Energy, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
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Yilbas BS, Al-Sharafi A, Ali H, Al-Aqeeli N, Al-Qahtani H, Al-Sulaiman F, Abu-Dheir N, Abdelmagid G, Elkhazraji A. Environmental dust removal from inclined hydrophobic glass surface: avalanche influence on dynamics of dust particles. RSC Adv 2018; 8:33775-33785. [PMID: 35548819 PMCID: PMC9086687 DOI: 10.1039/c8ra07503d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Accepted: 09/19/2018] [Indexed: 11/21/2022] Open
Abstract
The removal of environmental dust particles from optically transparent glass surfaces is considered, and the dynamics of the dust particles on the inclined hydrophobic glass surface is examined. The glass surfaces are coated by functionalized nano-sized silica particles to create a hydrophobic wetting state on the surface. A thin layer of environmental dust particles, collected from the local area of Dammam in the Kingdom of Saudi Arabia (KSA), is deposited on the surface while mimicking the dust accumulation on the surfaces in the dusty days of KSA. In order to increase the removal rate of the dust particles from the inclined hydrophobic glass surfaces, high density particles, which are higher than the density of the dust particles, are locally distributed on the dust particle-deposited surface while generating the avalanche influence on the inclined surface. The motion of the dust and high density particles on the inclined surface is monitored using a high speed camera. The predictions of the dust particles' acceleration and velocity are compared to those obtained from the high speed camera data. It is found that the predictions of velocity and acceleration of the dust particles agree well with the experimental data. Local insertion of the high density particles generates avalanche influence on the inclined surface while initiating the removal of the dust particles from the hydrophobic surface at small inclination angles. The size of the area where the dust particles are removed from the inclined surface increases with enlarging coverage area of the high density particles. The dust-removed surface, under the avalanche influence, improves the UV-visible transmittance of the hydrophobic glass. The removal of environmental dust particles from optically transparent glass surfaces is considered, and the dynamics of the dust particles on the inclined hydrophobic glass surface is examined.![]()
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Affiliation(s)
- Bekir Sami Yilbas
- Center of Excellence in Renewable Energy
- King Fahd University of Petroleum & Minerals
- Dhahran
- Saudi Arabia
- Mechanical Engineering Department
| | - Abdullah Al-Sharafi
- Mechanical Engineering Department
- King Fahd University of Petroleum & Minerals
- Dhahran
- Saudi Arabia
| | - Haider Ali
- Mechanical Engineering Department
- King Fahd University of Petroleum & Minerals
- Dhahran
- Saudi Arabia
| | - Nasser Al-Aqeeli
- Mechanical Engineering Department
- King Fahd University of Petroleum & Minerals
- Dhahran
- Saudi Arabia
| | - Hussain Al-Qahtani
- Mechanical Engineering Department
- King Fahd University of Petroleum & Minerals
- Dhahran
- Saudi Arabia
| | - Fahad Al-Sulaiman
- Center of Excellence in Renewable Energy
- King Fahd University of Petroleum & Minerals
- Dhahran
- Saudi Arabia
- Mechanical Engineering Department
| | - Numan Abu-Dheir
- Mechanical Engineering Department
- King Fahd University of Petroleum & Minerals
- Dhahran
- Saudi Arabia
| | - Ghassan Abdelmagid
- Center of Excellence in Renewable Energy
- King Fahd University of Petroleum & Minerals
- Dhahran
- Saudi Arabia
- Mechanical Engineering Department
| | - Ali Elkhazraji
- Mechanical Engineering Department
- King Fahd University of Petroleum & Minerals
- Dhahran
- Saudi Arabia
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