Browsing Materials Science & Technology by Author "Ponnamma, Deepalekshmi"
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Date palm fibre filled recycled ternary polymer blend composites with enhanced flame retardancy
Zadeh, Khadija M.; Ponnamma, Deepalekshmi; Al Ali Al-Maadeed, Mariam ( Elsevier Ltd , 2017 , Article)Flammability of recycled polypropylene (PP)/low density polyethylene (LDPE)/high density polyethylene (HDPE) ternary blends containing date palm fibres is investigated in this study. Melt blending is used for the composite ... -
Electrospun Polysulfone Hybrid Nanocomposite Fibers as Membrane for Separating Oil/Water Emulsion
Ponnamma, Deepalekshmi; Elgawady, Yara; Hassan, Mohamed K.; Adham, Samer; Al-Maas, Mashael; Alamgir, Karim; Al-Maadeed, Mariam Al Ali... more authors ... less authors ( Springer Nature , 2023 , Article)Commercial polymer membranes are largely utilized to separate oil/water mixtures; however, membrane fouling, flux decline, and short lifetime often inhibit their high performance. In order to resolve these drawbacks of the ... -
Investigation of antimicrobial properties and in-vitro bioactivity of Ce3+-Sr2+dual-substituted nano hydroxyapatites
Sundarabharathi, Lakshmanaperumal; Chinnaswamy, Mahendran; Ponnamma, Deepalekshmi; Parangusan, Hemalatha; Al-Maadeed, Mariam Al Ali ( Blackwell Publishing Inc. , 2019 , Article)Dual doped calcium apatite has been widely focused as it enhances the osteoconductive property for the possible applications in orthopedic and dental implants. In this work, we investigate the antimicrobial and bioactive ... -
Laser Induced Periodic Surface Structures on Nano Metal Oxide filled Polyvinylidene Fluoride Nanocomposites
Ponnamma, Deepalekshmi; Sivakumar, Velautham; Popelka, Anton; Hussein, Yasser H. A.; Al-Maadeed, Mariam Al Ali ( Elsevier , 2018 , Article)The ability of polarized pulsed laser in surface modification of substrate surfaces without thermally destroying them is a well-established concept of scientific procedure. In this work, we report the laser induced surface ... -
Oleic acid-grafted chitosan/graphene oxide composite coating for corrosion protection of carbon steel
Fayyad, Eman M.; Sadasivuni, Kishor Kumar; Ponnamma, Deepalekshmi; Al-Maadeed, Mariam Al Ali ( Elsevier Ltd , 2016 , Article)An anticorrosion coating film based on the formation of nanocomposite coating is reported in this study. The composite consisted of chitosan (green matrix), oleic acid, and graphene oxide (nano filler). The nanocomposite ... -
Physico-mechanical, dielectric, and piezoelectric properties of PVDF electrospun mats containing silver nanoparticles.
Issa, Ahmed A.; Al-Maadeed, Mariam A.; Luyt, Adriaan S.; Ponnamma, Deepalekshmi; Hassan, Mohammad K. ( C , 2017 , Article)Poly(vinylidene fluoride) (PVDF) is a piezoelectric material with outstanding physical and mechanical properties. The piezoelectric properties depend on the β-phase content of this polymer, while the physical and mechanical ... -
Polymer-metal oxide composite nanofibers
Elkahlout, Zainab Ibrahim; AlAhzm, Abdulrahman Mohmmed; Alejli, Maan Omar; AlMaadeed, Fatima Zayed; Ponnamma, Deepalekshmi; Al-Maadeed, Mariam Al Ali... more authors ... less authors ( Elsevier , 2021 , Book chapter)Extensive studies have been conducted on different kinds of polymers, their composites, and multifunctionalities, depending on their structural features. Metal oxides and their polymer nanocomposites offer technological ... -
Production of Biodiesel from Soybean Oil in Less Time and at Low Temperature
Choudhary, Rajan; Kumar, Anuj; Ellapani, Vijay Nag; Trinayan, Baruah; Loganathan, Muruganandam; Ravy, Lakshmi; Vijayaparthasarathi, Vijayakumar; Baburao, Amit Mahindrakar; Shanthakumar, Subramaniam; Ponnamma, Deepalekshmi; Sadasivuni, Kishor Kumar; Swamiappan, Sasikumar... more authors ... less authors ( Asian Publication Corporation , 2022 , Article)The heterogeneous catalyst plays an important role in the production of biodiesel at industrial level. In present work, the utilization of wollastonite as a heterogeneous catalyst is attempted to explore its non-biomedical ... -
Reduction in piezoelectric voltage generation for the cerium doped nickel ferrite nanoparticles filled PVDF-HFP nanocomposites
Ponnamma, Deepalekshmi; Aljarod, Omar; Parangusan, Hemalatha; Al-Maadeed, Mariam Al Ali ( Elsevier B.V. , 2019 , Article)This paper describes the synthesis of grape cluster shaped nickel ferrite (NiFe 2 O 4 ) and cerium doped nickel ferrite (Ce-NiFe 2 O 4 ) nanoparticles by chemical co-precipitation and their addition to poly(vinylidene ... -
Role of metal oxide nanofibers in water purification
El-Samak, Ali A.; Rahman, Hammadur; Ponnamma, Deepalekshmi; Hassan, Mohammad K.; Zaidi, Syed Javaid; Al-Maadeed, Mariam Al Ali... more authors ... less authors ( Elsevier , 2021 , Book chapter)Water treatment through nanomaterials and nanocomposites is a booming research area, since water resources are of prime importance for human sustainability. Having high permeability, optimum pore size, and specific surface ...