Browsing by Author "Ponnamma, Deepalekshmi"
Now showing items 1-20 of 53
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A comparative review of natural and synthetic biopolymer composite scaffolds
Reddy, M. Sai Bhargava; Ponnamma, Deepalekshmi; Choudhary, Rajan; Sadasivuni, Kishor Kumar ( MDPI AG , 2021 , Article Review)Tissue engineering (TE) and regenerative medicine integrate information and technology from various fields to restore/replace tissues and damaged organs for medical treatments. To achieve this, scaffolds act as delivery ... -
A Fast Responsive Ultraviolet Sensor from mSILAR-Processed Sn-ZnO
Thomas, Deepu; Vijayalakshmi, K. A.; Sadasivuni, Kishor Kumar; Thomas, Ajith; Ponnamma, Deepalekshmi; Cabibihan, John-John... more authors ... less authors ( Springer New York LLC , 2017 , Article)Microwave-assisted successive ionic layer adsorption and reaction was employed to synthesize Sn-ZnO (tin-doped zinc oxide), and its sensitivity to ultraviolet radiation is compared with zinc oxide (ZnO). The sensing films ... -
A stable porous vessel for photocatalytic degradation of Azocarmine G dye
El-Samak, Ali A.; Ponnamma, Deepalekshmi; Hassan, Mohammad K.; Al-Maadeed, Mariam Al Ali ( Elsevier , 2022 , Article)Porous nanocomposite of polystyrene (PS) is fabricated by non-solvent induced phase separation, and with the addition of ZnO nanomaterials through electrospinning, the different evaporation rates of solvent/non solvent ... -
Carbon dioxide adsorption based on porous materials
Reddy, M. Sai Bhargava; Ponnamma, Deepalekshmi; Sadasivuni, Kishor Kumar; Kumar, Bijandra; Abdullah, Aboubakr M. ( Royal Society of Chemistry , 2021 , Article Review)Global warming due to the high concentration of anthropogenic CO2in the atmosphere is considered one of the world's leading challenges in the 21stcentury as it leads to severe consequences such as climate change, extreme ... -
Correction to: Polymer Nanocomposites in Biomedical Engineering
Sadasivuni, Kishor Kumar; Ponnamma, Deepalekshmi; Rajan, Mariappan; Basheer Ahamed, M.; Al-Maadeed, Mariam Ali S.A. ( Springer , 2019 , Book chapter)In the original version of the book, the following belated corrections have been incorporated: The co-editor names ''Basheer Ahmed'' has been changed to ''M. Basheer Ahamed'' and ''Al-Maadeed Mariam Ali S A'' has been ... -
Curing enhancement and network effects in multi-walled carbon nanotube-filled vulcanized natural rubber: evidence for solvent sensing
Ponnamma, Deepalekshmi; Varughese, Konnanilkunnathil Thomas; Al-Maadeed, Mariam Al Ali; Thomas, Sabu ( John Wiley and Sons Ltd , 2017 , Article)Electrically and thermally conductive polymer composites offer great possibilities in various electronic fields because of their low weight and ease of processing. This paper addresses the curing behaviour and network ... -
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 ... -
Design, development and techno economic analysis of novel parabolic trough collector for low-temperature water heating applications
Upadhyay, Bhargav H.; Patel, Amitkumar J.; Sadasivuni, Kishor Kumar; Mistry, J.M.; Ramana, P.V.; Panchal, Hitesh; Ponnamma, Deepalekshmi; Essa, F.A.... more authors ... less authors ( Elsevier Ltd , 2021 , Article)The primary objective of this experimentation is to develop and evaluate indigenous PTC capable of producing hot water for low-temperature applications. A new parabolic trough collector is designed; which is easy to ... -
Designing a quick fix shutter for auto-disinfecting scan glass surface in biometric scanners
Ponnamma, Deepalekshmi; Houkan, Mohammad Talal; Mourya, Muni Raj; Al-Thani, Noora ( Qatar University Press , 2020 , Poster)Fingerprint scanners are significant devices in professional life, and its contamination can be potential sources of COVID 19 transmission. Manual disinfection of the fingerprint scanner after every single use is time ... -
Designing dual phase sensing materials from polyaniline filled styrene-isoprene-styrene composites
Sadasivuni, Kishor Kumar; Ponnamma, Deepalekshmi; Kasak, Peter; Krupa, Igor; Al-Maadeed, Mariam Ali S.A. ( Elsevier Ltd , 2014 , Article)The demand for developing oil detectors is ever increasing since the cleanup and recovery from oil spill usually take long time. Here we propose oil sensors made of polyaniline (PANI) filled poly(styrene-isoprene-styrene) ... -
Designing piezoelectric nanogenerator from PVDFHFP nanocomposite fibers containing cellulose nanocrystals and Fedoped ZnO
Ponnamma, Deepalekshmi; Parangusan, Hemalatha; Tanvir, Aisha; Al Ali AlMaadeed, Mariam ( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)Self-powering devices harvest energy from the environment and perform based on a maintenance free approach. These materials are of utmost significance as they solve the problems associated with the energy crisis and ... -
Development of flexible PVDF/ BaTiO3-MoS2 polymer nanocomposites for energy harvesting and gas sensing applications
Parangusan, Hemalatha; Al-Sowaidi, Dana; Elhadrami, El Hassan; Ponnamma, Deepalekshmi; Bhadra, Jolly ( Springer Nature , 2024 , Article)The need for flexible and wearable devices is quite great in the modern era of advanced electronics and the Internet of Things (IoT). Here, we present a poly(vinylidene fluoride) (PVDF)/Barium Titanate–Molybdenum Disulfide ... -
Eco-Friendly Electromagnetic Interference Shielding Materials from Flexible Reduced Graphene Oxide Filled Polycaprolactone/Polyaniline Nanocomposites
Ponnamma, Deepalekshmi; Sadasivuni, Kishor Kumar; Strankowski, Michael; Kasak, Peter; Krupa, Igor; AlMaadeed, Mariam Al-Ali... more authors ... less authors ( Taylor and Francis Inc. , 2016 , Article)Hybrid nanocomposites have the unique ability of enhancing material properties due to the existing synergistic effect of the fillers. In this study, the authors report such an eco-friendly hybrid nanocomposite comprising ... -
Eeonomer 200F: A High-Performance Nanofiller for Polymer Reinforcement-Investigation of the Structure, Morphology and Dielectric Properties of Polyvinyl Alcohol/Eeonomer-200F Nanocomposites for Embedded Capacitor Applications
Deshmukh, Kalim; Ahamed, M. Basheer; Deshmukh, Rajendra R.; Sadasivuni, Kishor Kumar; Ponnamma, Deepalekshmi; Pasha, S. K. Khadheer; AlMaadeed, Mariam Al-Ali; Polu, Anji Reddy; Chidambaram, K.... more authors ... less authors ( Springer New York LLC , 2017 , Article)In the present study, Eeonomer 200F® was used as a high-performance nanofiller to prepare polyvinyl alcohol (PVA)-based nanocomposite films using a simple and eco-friendly solution casting technique. The prepared PVA/Eeonomer ... -
Effect of nanostructured polyhedral oligomeric silsesquioxane on the physical properties of poly(vinyl alcohol)
Valiya Parambath, Swapna; Ponnamma, Deepalekshmi; Sadasivuni, Kishor Kumar; Thomas, Sabu; Stephen, Ranimol ( John Wiley and Sons Inc. , 2017 , Article)An effective amphiphilic polyhedral oligomeric silsesquioxane (POSS) encapsulated poly(vinyl alcohol) (PVA) nanocomposite was successfully fabricated by solution blending method. Anionic octa(tetramethylammonium) (Octa-TMA) ... -
Electroactive and Optically Adaptive Bionanocomposite for Reconfigurable Microlens
Sadasivuni, Kishor Kumar; Ponnamma, Deepalekshmi; Ko, Hyun-U; Zhai, Lindong; Kim, Hyun-Chan; Kim, Jaehwan... more authors ... less authors ( American Chemical Society , 2016 , Article)This paper introduces an electroactive bionanocomposite based on poly(diethylene glycol adipate) (PDEGA) and cellulose nanocrystals (CNCs). The bionanocomposites were made using CNCs extracted from cotton and by optimizing ... -
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 ... -
Flexible oil sensors based on multiwalled carbon nanotube-filled isoprene elastomer composites
Ponnamma, Deepalekshmi; Sadasivuni, Kishor Kumar; Thomas, Sabu; Krupa, Igor; AlMa'adeed, Mariam Al-Ali ( Rubber Division of the American Chemical Society , 2016 , Article)Oil Spills Due To Either Accidents Or Deliberate Oily Discharges Cause Severe Pollution And Can Be Thwarted If Proper Detection Facilities Are Applied. This Article Reports New Flexible Oil Sensor Capabilities Of Three ... -
Fumed SiO2 nanoparticle reinforced biopolymer blend nanocomposites with high dielectric constant and low dielectric loss for flexible organic electronics
Deshmukh, Kalim; Ahamed, M. Basheer; Sadasivuni, Kishor Kumar; Ponnamma, Deepalekshmi; AlMaadeed, Mariam Al?Ali; Deshmukh, Rajendra R.; Pasha, S. K. Khadheer; Polu, Anji Reddy; Chidambaram, K.... more authors ... less authors ( John Wiley and Sons Inc. , 2017 , Article)In the present study, fumed silica (SiO2) nanoparticle reinforced poly(vinyl alcohol) (PVA) and poly(vinylpyrrolidone) (PVP) blend nanocomposite films were prepared via a simple solution‐blending technique. Fourier transform ... -
Graphene oxide nanocomposites based room temperature gas sensors: A review
Thangamani, G. J.; Deshmukh, Kalim; Nambiraj, N. A.; Ponnamma, Deepalekshmi; Sadasivuni, Kishor Kumar; Abdul Khalil, H. P. S.; Pasha, S. K. Khadheer... more authors ... less authors ( Elsevier Ltd , 2021 , Article)Over the last few decades, various volatile organic compounds (VOCs) have been widely used in the processing of building materials and this practice adversely affected the environment i.e. both indoor and outdoor air ...