Browsing Materials Science & Technology by Author "Karim A."
Now showing items 1-8 of 8
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Designing Flexible and Porous Fibrous Membranes for Oil Water Separation-A Review of Recent Developments
El-Samak A.A.; Ponnamma D.; Hassan M.K.; Ammar A.; Adham S.; Al-Maadeed M.A.A.; Karim A.... more authors ... less authors ( Bellwether Publishing, Ltd. , 2020 , Article Review)Oil sorbent membranes are highly effective materials in combating oil spills. Recent technological advancements in membrane preparations permit higher oil-sorption efficiency and easier oil recoverability. This review ... -
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 ... -
Hierarchically Patterned Elastomeric and Thermoplastic Polymer Films through Nanoimprinting and Ultraviolet Light Exposure
Chen Y.; Wang Z.; Kulkarni M.M.; Wang X.; Al-Enizi A.M.; Elzatahry A.A.; Douglas J.F.; Dobrynin A.V.; Karim A.... more authors ... less authors ( American Chemical Society , 2018 , Article)The surface relief structure of polymer films over large areas can be controlled by combining nanoscale imprinting and microscale ultraviolet-ozone (UVO) radiation, resulting in hierarchical structured surfaces. First, ... -
In situ synthesized amphiphilic polysulfone-poly(ethylene-glycol) block copolymer/silver nanocomposite for separating oil/water emulsion
Elgawady Y.; Ponnamma D.; Hassan M.K.; Adham S.; Karim A.; Al-Maadeed M.A.A.... more authors ... less authors ( John Wiley and Sons Inc , 2022 , Article)This work reports the synthesis of silver nanoparticles from the precursors, silver nitrate and sodium bromide, and the in situ synthesis of polysulfone (PSf)-poly(ethylene-glycol) (PEG) block copolymer (BCP) in the presence ... -
Natural polymer based composite membranes for water purification: a review
Dongre R.S.; Sadasivuni K.K.; Deshmukh K.; Mehta A.; Basu S.; Meshram J.S.; Al-Maadeed M.A.A.; Karim A.... more authors ... less authors ( Taylor and Francis Inc. , 2019 , Article Review)The ever-growing population, environmental pollution and ecological degradation cause suffering to human race due to chemicals and other water contaminants such as chemicals, heavy metals, pesticides and insecticides. ... -
Structure, nanomechanics, and dynamics of dispersed surfactant-free clay nanocomposite films
Zhang X.; Zhao J.; Snyder C.R.; Al-Enizi A.; Eltazahry A.; Simmons D.S.; Karim A.... more authors ... less authors ( John Wiley and Sons Inc. , 2018 , Article)The current work presents a new approach to achieve high quality dispersion of surfactant-free nanoclay tactoid particles in sub-micron thin films despite the absence of organic modifier. Natural Montmorillonite particles, ... -
Vertically oriented nanoporous block copolymer membranes for oil/water separation and filtration
Luo Y.; Wang X.; Zhang R.; Singh M.; Ammar A.; Cousins D.; Hassan M.K.; Ponnamma D.; Adham S.; Al-Maadeed M.A.A.; Karim A.... more authors ... less authors ( Royal Society of Chemistry , 2020 , Article)The separation of oil from water and filtration of aqueous solutions and dispersions are critical issues in the processing of waste and contaminated water treatment. Membrane-based technology has been proven as an effective ... -
White graphene-cobalt oxide hybrid filler reinforced polystyrene nanofibers for selective oil absorption
Ponnamma D.; Nair S.S.; Parangusan H.; Hassan M.K.; Adham S.; Karim A.; Al-Maadeed M.A.A.... more authors ... less authors ( MDPI AG , 2020 , Article)In this work, stable hydrophobic nanocomposites are made from electrospun fibers of polystyrene (PS) containing a hybrid filler combination of (i) hexagonal boron nitride (hBN) and (ii) cobalt oxide (Co3O4) nanomaterials. ...