Browsing by Author "Al Maadeed, M.A."
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Biotechnological production process and life cycle assessment of graphene
Khanam, P. Noorunnisa; Popelka, Anton; Alejji, Maryam; Al Maadeed, M. A. ( Hindawi , 2017 , Article)The aim of this study is to compare the graphene produced using a biotechnological method (Escherichia coli) with the graphene produced by Hummers' method (a chemical method) and to study the effect on the energy consumption ... -
Characterizing Biaxially Stretched Polypropylene / Graphene Nanoplatelet Composites
Mayoral, B.; Menary, G.; Martin, P.; Garrett, G.; Millar, B.; Douglas, P.; Khanam, N.; AlMaadeed, M.A.; Ouederni, M.; Hamilton, A.; Sun, D.... more authors ... less authors ( Frontiers Media S.A. , 2021 , Article)In this work, polypropylene (PP) nanocomposites containing different weight concentration of graphene nanoplatelets (GNP) were prepared by melt-mixing using an industrial-scale, co-rotating, intermeshing, twin-screw extruder. ... -
Chemical modification of graphene with grape seed extract: Its structural, optical and antimicrobial properties
Yaragalla S.; Rajendran R.; AlMaadeed M.A.; Kalarikkal N.; Thomas S. ( Elsevier Ltd , 2019 , Article)Herein, we modified for the first time thermally reduced graphene oxide (TRG) using grape seed extract (GSE), by simple probe sonication method. The effect of GSE on the structural changes of TRG has been carefully analyzed ... -
Containers' for self-healing epoxy composites and coating : Trends and advances
Vijayan, P.; AlMaadeed, M.A. ( BME-PT and GTE , 2016 , Article)The introduction of self-healing functionality into epoxy matrix is an important and challenging topic. Various micro/nano containers loaded self-healing agents are developed and incorporated into epoxy matrix to impart ... -
Effect of chain structure on the properties of Glass fibre/polyethylene composites
AlMaadeed, M.A.; Ouederni, Mabrouk; Khanam, P. Noorunnisa ( Elsevier, Ltd , 2013 , Article)Three types of polyethylenes (low density: LDPE, medium density: MDPE, and high density: HDPE) were used to investigate the effect of chain branching on the dispersion and adhesion in Glass fibre reinforced polymer composites. ... -
Effect of expanded graphite on the phase change materials of high density polyethylene/wax blends
AlMaadeed M.A.; Labidi S.; Krupa I.; Karkri M. ( Elsevier , 2015 , Article)Phase change materials fabricated from high density polyethylene (HDPE) blended with 40 or 50 wt% commercial wax (melting point of 43.08�C) and up to 15 wt% expanded graphite (EG) were studied. Techniques including scanning ... -
Effects of aniline concentrations on the electrical and mechanical properties of polyaniline polyvinyl alcohol blends
Bhadra, J.; Al-Thani, N.J.; Madi, N.K.; Al-Maadeed, M.A. ( Elsevier , 2015 , Article)Abstract In this work, we present an exclusive study on the effect of the feeding ratio of the monomer (aniline) on the structural, thermal, mechanical and electrical properties of polyaniline (PANI) polyvinyl alcohol (PVA) ... -
Figure of merit comparison of PP-based electret and PVDF-based piezoelectric polymer energy harvesters
Mrlík, M.; Leadenham, S.; AlMaadeed, M. A.; Erturk, A. ( SPIE , 2016 , Conference Paper)The harvesting of mechanical strain and kinetic energy has received great attention over the past two decades in order to power wireless electronic components such as those used in passive and active monitoring applications. ... -
Flexible pressure sensor based on PVDF nanocomposites containing reduced graphene oxide-titania hybrid nanolayers
Al-Saygh A.; Ponnamma D.; AlMaadeed M.A.; Poornima Vijayan P.; Karim A.; Hassan M.K.... more authors ... less authors ( MDPI AG , 2017 , Article)A novel flexible nanocomposite pressure sensor with a tensile strength of about 47 MPa is fabricated in this work. Nanolayers of titanium dioxide (titania nanolayers, TNL) synthesized by hydrothermal method are used to ... -
Foamy phase change materials based on linear low-density polyethylene and paraffin wax blends
Popelka, A.; Sobolciak, P.; Mrlik, M.; Nogellova, Z.; Chodak, I.; Ouederni, M.; Al-Maadeed, M.A.; Krupa, I.... more authors ... less authors ( Springer Nature , 2018 , Article)Foamy phase-change materials (FPCMs) based on linear low-density polyethylene (LLDPE) blended with 30 wt.% of paraffin wax (W) were successfully prepared for the first time. The advantage of these materials is their double ... -
Graphene oxide as antimicrobial against two gram-positive and two gram-negative bacteria in addition to one fungus
Al-Thani, Roda F.; Patan, N.K.; Al-Maadeed, M.A. ( Science Publications , 2014 , Article)Graphene based materials have wide potential applications in biology, biomedical, agriculture environmental and biotechnology. Graphene Oxide (GO) is one of those materials and has a promising substance as antimicrobial ... -
Improved flexible, controlled dielectric constant material from recycled LDPE polymer composites
Noorunnisa Khanam, P.; Al-Maadeed, M. A.; Mrlik, Miroslav ( Springer Nature , 2016 , Article)In this study, recycled low density polyethylene (RLDPE) is developed with the addition of aluminum oxide (Al2O3) to have new polymer composites. The following wt% were used of the filler (1, 4 and 6 wt%). Tensile properties, ... -
Introduction of Biopolymer Composites: What to do in Electronics?
Ponnamma, D.; Sadasivuni, Kishor Kumar; AlMaadeed, M.A. ( Elsevier Inc. , 2017 , Book chapter)Environment friendly, biodegradable and nontoxic materials especially from renewable resources are attaining great levels of attention nowadays. Biopolymers contribute a very significant division of materials through which ... -
Materials and technologies for the tertiary treatment of produced water contaminated by oil impurities through nonfibrous deep-bed media: A review
Sobolciak P.; Popelka A.; Tanvir A.; Al-Maadeed M.A.; Adham S.; Krupa I.... more authors ... less authors ( MDPI AG , 2020 , Article)This review covers various aspects of the treatment of emulsified oil/water mixtures and is particularly focused on tertiary treatment, which means the reduction of the oil content from 70-100 ppm to below 10 ppm, depending ... -
Mechanical, sorption and adhesive properties of composites based on low density polyethylene filled with date palm wood powder
AlMaadeed, Mariam A.; Nógellová, Zuzana; Mičušík, Matej; Novák, Igor; Krupa, Igor ( Elsevier Ltd , 2014 , Article)Low density polyethylene (LDPE) was blended with date palm wood powder (DPW) to prepare composites with concentrations of filler ranging from 10 to 70. wt.%. The Youn?s modulus of the composites significantly increased ... -
Melt processing and properties of linear low density polyethylene-graphene nanoplatelet composites
P., Noorunnisa Khanam; AlMaadeed, M.A.; Ouederni, M.; Harkin-Jones, Eileen; Mayoral, Beatriz; Hamilton, Andrew; Sun, Dan... more authors ... less authors ( Elsevier , 2016 , Article)Composites of Linear Low Density Polyethylene (LLDPE) and Graphene Nanoplatelets (GNPs) were processed using a twin screw extruder under different extrusion conditions. The effects of screw speed, feeder speed and GNP ... -
Melt Processing and Properties of Polyamide 6/Graphene Nanoplatelet Composites
Mayoral, B.; Harkin-Jones, E.; Noorunnisa Khanam, P.; AlMaadeed, M. A.; Ouederni, M.; Hamilton, A.; Sun, D.... more authors ... less authors ( ICCCM , 2015 , Conference Paper)In this paper, the processing and characterization of Polyamide 6 (PA6) / graphite nanoplatelets (GNPs) composites is reported. PA6/GNPs composites were prepared by melt-mixing using an industrial, co-rotating, intermeshing, ... -
Modeling polymeric gels: The role of chain flexibility on the structure of physical gels
Pereyra, R. G.; Al-Maadeed, M. A.; Carignano, M. A. ( BME-PT and GTE , 2017 , Article)Using molecular dynamics simulations and a simple model for chain molecules we study the gel formation under different conditions. The main characteristic of the model is the short attractive range of the non-bonding ... -
Mussel-mimicking sulfobetaine-based copolymer with metal tunable gelation, self-healing and antibacterial capability
Mrlík, Miroslav; Špírek, Mário; Al-Khori, Jassim; Ahmad, Ali Abdulrahman; Mosnaček, Jaroslav; AlMaadeed, Mariam AlAli; Kasák, Peter... more authors ... less authors ( Elsevier B.V. , 2020 , Article)In the present study, the sulfobetaine-based copolymer bearing a dopamine functionality showed gel formation adjusted by the application of metal salts for gelation and various values of pH. Normally, the liquid-like ... -
Neutron diffraction studies of the Na-ion battery electrode materials NaCoCr2(PO4)3, NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3
Ben Yahia, H.; Essehli, R.; Avdeev, M.; Park, J-B.; Sun, Y-K.; Al-Maadeed, M. A.; Belharouak, I.... more authors ... less authors ( Academic Press Inc. , 2016 , Article)The new compounds NaCoCr2(PO4)3, NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3 were synthesized by sol-gel method and their crystal structures were determined by using neutron powder diffraction data. These compounds were characterized ...