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Article ; Online: Functional and Structural Facts of Effective Electromagnetic Interference Shielding Materials: A Review.

Orasugh, Jonathan Tersur / Ray, Suprakas Sinha

ACS omega

2023 Volume 8, Issue 9, Page(s) 8134–8158

Abstract: Electromagnetic interference (EMI) shielding effectiveness (SE) systems have received immense attention from researchers owing to the rapid development in electronics and telecommunications, which is an alarming matter in our modern society. This ... ...

Abstract	Electromagnetic interference (EMI) shielding effectiveness (SE) systems have received immense attention from researchers owing to the rapid development in electronics and telecommunications, which is an alarming matter in our modern society. This radiation can damage the performance of EM devices and may harmfully affect animal/human health. The harmonious utilization of magnetic alloys and conducting but nonmagnetic materials (such as carbon/graphene) is a practical approach toward EMI SE. This review is not exhaustive, although it is comprehensive and aimed at all materials for EMI SE especially graphene-based polymeric composites. It encompasses multifunctional and functional structural EMI shields. These materials comprise polymers, carbons, ceramics, metals, cement composites/nanocomposites, and hybrids. The accessibility of abundant categories of carbon-based materials in their microscale, nanoscale, and quantum forms as EMI shields as polymer-carbon, cement-carbon, ceramic-carbon, metal-carbon, and their hybrids, makes them receive much attention, as a result of their unique amalgamation of electrical, magnetic, dielectric, thermal, and/or mechanical properties. Herewith, we have discussed the principles of EMI shields along with their design and state of the art basis and material architecture along with the drawbacks in research on EMI shields.
Language	English
Publishing date	2023-02-22
Publishing country	United States
Document type	Journal Article ; Review
ISSN	2470-1343
ISSN (online)	2470-1343
DOI	10.1021/acsomega.2c05815
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Graphene-Based Electrospun Fibrous Materials with Enhanced EMI Shielding: Recent Developments and Future Perspectives.

Orasugh, Jonathan Tersur / Ray, Suprakas Sinha

ACS omega

2022 Volume 7, Issue 38, Page(s) 33699–33718

Abstract: As a result of advancements in electronics/telecommunications, electromagnetic interference (EMI) pollution has gotten worse. Hence, fabrication/investigation of EMI shields having outstanding EMI shielding performance is necessary. Electrospinning (ES) ... ...

Abstract	As a result of advancements in electronics/telecommunications, electromagnetic interference (EMI) pollution has gotten worse. Hence, fabrication/investigation of EMI shields having outstanding EMI shielding performance is necessary. Electrospinning (ES) has recently been established in several niches where 1D nanofibers (NFs) fabricated by ES can provide the shielding of EM waves, owing to their exceptional benefits. This review presents the basic correlations of ES technology and EMI shielding. Diverse graphene (GP)-based fibrous materials directly spun via ES as EMI shields are discussed. Electrospun EMI shields as composites through diverse post-treatments are reviewed, and then different factors influencing their EMI shielding characteristics are critically summarized. Finally, deductions and forthcoming outlooks are given. This review provides up to date knowledge on the advancement of the application of graphene-based electrospun fibers/composite materials as EMI shields and the outlook for high-performance electrospun fibers/composite-based EMI shielding materials.
Language	English
Publishing date	2022-09-12
Publishing country	United States
Document type	Journal Article ; Review
ISSN	2470-1343
ISSN (online)	2470-1343
DOI	10.1021/acsomega.2c03579
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Prospect of DFT Utilization in Polymer-Graphene Composites for Electromagnetic Interference Shielding Application: A Review.

Orasugh, Jonathan Tersur / Ray, Suprakash Sinha

Polymers

2022 Volume 14, Issue 4

Abstract: The improvement in current materials science has prompted a developing need to capture the peculiarities that determine the properties of materials and how they are processed on an atomistic level. Quantum mechanics laws control the interface among atoms ...

Abstract	The improvement in current materials science has prompted a developing need to capture the peculiarities that determine the properties of materials and how they are processed on an atomistic level. Quantum mechanics laws control the interface among atoms and electrons; thus, exact and proficient techniques for fixing the major quantum-mechanical conditions for complex many-particle, many-electron frameworks should be created. Density functional theory (DFT) marks an unequivocal advance in these endeavours. DFT has had a rapid influence on quintessential and industrial research during the last decade. The DFT system describes periodic structural systems of 2D or 3D electronics with the utilization of Bloch's theorem in the direction of Kohn-Sham wavefunctions for the significant facilitation of these schemes. This article introduces and discusses the infinite systems modelling approach required for graphene-based polymer composites or their hybrids. Aiming to understand electronic structure computations as per physics, the impressions of band structures and atomic structure envisioned along with orbital predicted density states are beneficial. Convergence facets coupled with the basic functions number and the
Language	English
Publishing date	2022-02-11
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	2527146-5
ISSN	2073-4360 ; 2073-4360
ISSN (online)	2073-4360
ISSN	2073-4360
DOI	10.3390/polym14040704
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Article: Recent Advances and Outlook in 2D Nanomaterial-Based Flame-Retardant PLA Materials.

Temane, Lesego Tabea / Orasugh, Jonathan Tersur / Ray, Suprakas Sinha

Materials (Basel, Switzerland)

2023 Volume 16, Issue 17

Abstract: Poly (lactic acid) or polylactide (PLA) has gained widespread use in many industries and has become a commodity polymer. Its potential as a perfect replacement for petrochemically made plastics has been constrained by its extreme flammability and ... ...

Abstract	Poly (lactic acid) or polylactide (PLA) has gained widespread use in many industries and has become a commodity polymer. Its potential as a perfect replacement for petrochemically made plastics has been constrained by its extreme flammability and propensity to flow in a fire. Traditional flame-retardants (FRs), such as organo-halogen chemicals, can be added to PLA without significantly affecting the material's mechanical properties. However, the restricted usage of these substances causes them to bioaccumulate and endanger plants and animals. Research on PLA flame-retardants has mostly concentrated on organic and inorganic substances for the past few years. Meanwhile, there has been a significant increase in renewed interest in creating environmentally acceptable flame-retardants for PLA to maintain the integrity of the polymer, which is the current trend. This article reviews recent advancements in novel FRs for PLA. The emphasis is on two-dimensional (2D) nanosystems and the composites made from them that have been used to develop PLA nanocomposite (NCP) systems that are flame retarding. The association between FR loadings and efficiency for different FR-PLA systems is also briefly discussed in the paper, as well as their influence on processing and other material attributes. It is unmistakably established from the literature that adding 2D nanoparticles to PLA matrix systems reduces their flammability by forming an intumescent char/carbonized surface layer. This creates a barrier effect that successfully blocks the filtration of volatiles and oxygen, heat and mass transfer, and the release of combustible gases produced during combustion.
Language	English
Publishing date	2023-09-02
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma16176046
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Article ; Online: Integration of 3D Printing-Coelectrospinning: Concept Shifting in Biomedical Applications.

Ghosh, Adrija / Orasugh, Jonathan Tersur / Ray, Suprakas Sinha / Chattopadhyay, Dipankar

ACS omega

2023 Volume 8, Issue 31, Page(s) 28002–28025

Abstract: Porous structures with sizes between the submicrometer and nanometer scales can be produced using efficient and adaptable electrospinning technology. However, to approximate desirable structures, the construction lacks mechanical sophistication and ... ...

Abstract	Porous structures with sizes between the submicrometer and nanometer scales can be produced using efficient and adaptable electrospinning technology. However, to approximate desirable structures, the construction lacks mechanical sophistication and conformance and requires three-dimensional solitary or multifunctional structures. The diversity of high-performance polymers and blends has enabled the creation of several porous structural conformations for applications in advanced materials science, particularly in biomedicine. Two promising technologies can be combined, such as electrospinning with 3D printing or additive manufacturing, thereby providing a straightforward yet flexible technique for digitally controlled shape-morphing fabrication. The hierarchical integration of configurations is used to imprint complex shapes and patterns onto mesostructured, stimulus-responsive electrospun fabrics. This technique controls the internal stresses caused by the swelling/contraction mismatch in the in-plane and interlayer regions, which, in turn, controls the morphological characteristics of the electrospun membranes. Major innovations in 3D printing, along with additive manufacturing, have led to the production of materials and scaffold systems for tactile and wearable sensors, filtration structures, sensors for structural health monitoring, tissue engineering, biomedical scaffolds, and optical patterning. This review discusses the synergy between 3D printing and electrospinning as a constituent of specific microfabrication methods for quick structural prototypes that are expected to advance into next-generation constructs. Furthermore, individual techniques, their process parameters, and how the fabricated novel structures are applied holistically in the biomedical field have never been discussed in the literature. In summary, this review offers novel insights into the use of electrospinning and 3D printing as well as their integration for cutting-edge applications in the biomedical field.
Language	English
Publishing date	2023-07-25
Publishing country	United States
Document type	Journal Article ; Review
ISSN	2470-1343
ISSN (online)	2470-1343
DOI	10.1021/acsomega.3c03920
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Article ; Online: Prospects of 2D graphdiynes and their applications in desalination and wastewater remediation.

Ghosh, Adrija / Orasugh, Jonathan Tersur / Ray, Suprakas Sinha / Chattopadhyay, Dipankar

RSC advances

2023 Volume 13, Issue 27, Page(s) 18568–18604

Abstract: Water is an indispensable part of human life that affects health and food intake. Water pollution caused by rapid industrialization, agriculture, and other human activities affects humanity. Therefore, researchers are prudent and cautious regarding the ... ...

Abstract	Water is an indispensable part of human life that affects health and food intake. Water pollution caused by rapid industrialization, agriculture, and other human activities affects humanity. Therefore, researchers are prudent and cautious regarding the use of novel materials and technologies for wastewater remediation. Graphdiyne (GDY), an emerging 2D nanomaterial, shows promise in this direction. Graphdiyne has a highly symmetrical π-conjugated structure consisting of uniformly distributed pores; hence, it is favorable for applications such as oil-water separation and organic-pollutant removal. The acetylenic linkage in GDY can strongly interact with metal ions, rendering GDY applicable to heavy-metal adsorption. In addition, GDY membranes that exhibit 100% salt rejection at certain pressures are potential candidates for wastewater treatment and water reuse
Language	English
Publishing date	2023-06-20
Publishing country	England
Document type	Journal Article ; Review
ISSN	2046-2069
ISSN (online)	2046-2069
DOI	10.1039/d3ra01370g
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Article ; Online: Supersensitive metal free in-situ synthesized graphene oxide@cellulose nanocrystals acetone sensitive bioderived sensors.

Orasugh, Jonathan Tersur / Saasa, Valentine / Ray, Suprakas Sinha / Mwakikunga, Bonex

International journal of biological macromolecules

2023 Volume 241, Page(s) 124514

Abstract: A series of graphene oxide@cellulose nanocrystal (GO@CNC) nanoparticles (NPs) were synthesized in this study using a room temperature-based simple modified hummers process. The morphological structures, as well as chemical characteristics of these ... ...

Abstract	A series of graphene oxide@cellulose nanocrystal (GO@CNC) nanoparticles (NPs) were synthesized in this study using a room temperature-based simple modified hummers process. The morphological structures, as well as chemical characteristics of these materials, were characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD), and other techniques. The results show that the as-prepared nanoparticles are made up of crystallite grains with an average size of around 7.82, 14.69, 10.77, 7.82, and 12.51 nm for GO, CNC, GO1@CNC1, GO2@CNC3, and GO3@CNC3 respectively, and OH & COOH functionalities on the NPs' surfaces. GO@CNC NPs exhibit significantly better sensing characteristics towards acetone when compared to virgin GO nanoplatelets; specifically, the optimal sensor based on GO3@CNC3 NPs showed the highest response (60.88 at 5 ppm), which was higher than that of the virgin GO sensor at 200 °C operating temperature and including those reported. Furthermore, the sensors have a high sensitivity towards acetone in sub-ppm concentrations as well as a detection limit of 5 ppm, making it a viable candidate for diabetes breath testing.
MeSH term(s)	Cellulose/chemistry ; Acetone ; Nanoparticles/chemistry ; Graphite/chemistry ; Metals
Chemical Substances	Cellulose (9004-34-6) ; graphene oxide ; Acetone (1364PS73AF) ; Graphite (7782-42-5) ; Metals
Language	English
Publishing date	2023-04-20
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	282732-3
ISSN	1879-0003 ; 0141-8130
ISSN (online)	1879-0003
ISSN	0141-8130
DOI	10.1016/j.ijbiomac.2023.124514
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Article ; Online: Supersensitive metal free in-situ synthesized graphene oxide@cellulose nanocrystals acetone sensitive bioderived sensors

Orasugh, Jonathan Tersur / Saasa, Valentine / Ray, Suprakas Sinha / Mwakikunga, Bonex

International Journal of Biological Macromolecules. 2023 Apr. 20, p.124514-

2023 , Page(s) 124514–

Abstract	A series of graphene oxide@cellulose nanocrystal (GO@CNC) nanoparticles (NPs) were synthesized in this study using a room temperature-based simple modified hummers process. The morphological structures, as well as chemical characteristics of these materials were characterized using, transmission electron microscopy (TEM), X-ray diffraction (XRD), and other techniques. The results show that the as-prepared nanoparticles are made up of crystallite grains with an average size of around 7.82, 14.69, 10.77, 7.82, and 12.51 nm for GO, CNC, GO1@CNC1, GO2@CNC3, and GO3@CNC3 respectively, and OH &COOH functionalities on the NPs' surfaces. GO@CNC NPs exhibit significantly better sensing characteristics towards acetone when compared to virgin GO nanoplatelets; specifically, the optimal sensor based on GO3@CNC3 NPs showed the highest response (60.88 at 5 ppm), which was higher than that of the virgin GO sensor at 200 °C operating temperature and including those reported. Furthermore, the sensors have a high sensitivity towards acetone in sub-ppm concentrations as well as a detection limit of 5 ppm, making it a viable candidate for diabetes breath testing.
Keywords	X-ray diffraction ; acetone ; crystallites ; detection limit ; diabetes ; graphene ; nanocrystals ; nanoparticles ; temperature ; transmission electron microscopy ; Gas sensor ; Graphene oxide ; Cellulose nanocrystals ; Composite
Language	English
Dates of publication	2023-0420
Publishing place	Elsevier B.V.
Document type	Article ; Online
Note	Pre-press version ; Use and reproduction
ZDB-ID	282732-3
ISSN	1879-0003 ; 0141-8130
ISSN (online)	1879-0003
ISSN	0141-8130
DOI	10.1016/j.ijbiomac.2023.124514
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Article: Transdermal therapeutic system: Study of cellulose nanocrystals influenced methylcellulose-chitosan bionanocomposites

Ali, Mir Sahidul / Bhunia, Pritha / Samanta, Arpita Priyadarshini / Orasugh, Jonathan Tersur / Chattopadhyay, Dipankar

International journal of biological macromolecules. 2022 Oct. 01, v. 218

2022

Abstract: Over the past few years, there is a drive toward the fabrication and application of bio-based non-cytotoxic drug carriers. Cellulose nanocrystals (CNCs) have gotten immense research attention as a promising bioderived material in the biomedical field due ...

Abstract	Over the past few years, there is a drive toward the fabrication and application of bio-based non-cytotoxic drug carriers. Cellulose nanocrystals (CNCs) have gotten immense research attention as a promising bioderived material in the biomedical field due to its remarkable properties. The delivery of analgesic and anti-inflammatory drug, ketorolac tromethamine (KT) by transdermal route is stipulated herewith to fabricate suitable transdermal therapeutic systems. We have synthesized CNCs from jute fibers and aim to develop a non-cytotoxic polymer-based bionanocomposites (BNCs) transdermal patch, formulated with methylcellulose (MC), chitosan (CH), along with exploration of CNCs for sustained delivery of KT, where CNCs act as nanofiller and elegant nanocarrier. CNCs reinforced MCCH blends were prepared via the solvent evaporation technique. The chemical structure, morphology, and thermal stability of the prepared bionanocomposites formulations were studied by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), TGA, DSC, DMA, and SEM. The In vitro drug release studies were executed using Franz diffusion cells. The BNC patches showed in-vitro cytocompatibility and the drug release study revealed that BNC containing 1 wt% CNCs presented the best-sustained drug release profile. The bioderived CNCs appear to enhance the BNCs drug's bioavailability, which could have a broad prospect for TDD applications.
Keywords	Fourier transform infrared spectroscopy ; X-ray diffraction ; analgesics ; anti-inflammatory agents ; bioavailability ; chemical structure ; chitosan ; evaporation ; jute ; methylcellulose ; nanocarriers ; nanocomposites ; nanocrystals ; solvents ; thermal stability
Language	English
Dates of publication	2022-1001
Size	p. 556-567.
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	282732-3
ISSN	1879-0003 ; 0141-8130
ISSN (online)	1879-0003
ISSN	0141-8130
DOI	10.1016/j.ijbiomac.2022.07.166
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Article: Electrospun nanofibres: A new vista for detection and degradation of harmful endocrine-disrupting chemicals

Ghosh, Adrija / Orasugh, Jonathan Tersur / Chattopadhyay, Dipankar / Ghosh, Sayanti

Groundwater for sustainable development. 2022 Feb., v. 16

2022

Abstract: In recent years researchers have become more concerned regarding the presence of endocrine-disrupting chemicals (EDCs) in our environment as they have the potential to instigate serious health problems both in human beings as well as marine animals. ... ...

Abstract	In recent years researchers have become more concerned regarding the presence of endocrine-disrupting chemicals (EDCs) in our environment as they have the potential to instigate serious health problems both in human beings as well as marine animals. Conventional methods of treating these EDCs have failed mostly. At this moment electrospun nanofibres have become the ‘holy grail’ in this field. Their multifaceted functions include adsorption, filtration/extraction, detection, and degradation of these harmful chemicals. They have the potential to adsorb up to 357.14 mg/g of heavy metal (Moradi et al., 2018a) and extract as low as 0.007 ng mL⁻¹ of EDCs (Zhang and Xu, 2017). This review provides a brief account of the conventional methods of treating EDCs and their major drawbacks, followed by a precise introduction on the working parameters of an electrospinning machine and the role of synthesized nanofibre in the treatment of EDCs. Conclusively the challenges and future prospects of these nanofibres in this field have been highlighted. Therefore, this review can show a direction towards a new approach to ejecting EDCs through bridging the gaps in the previous recent works.
Keywords	adsorption ; filtration ; groundwater ; heavy metals ; humans ; nanofibers ; sustainable development
Language	English
Dates of publication	2022-02
Publishing place	Elsevier B.V.
Document type	Article
ISSN	2352-801X
DOI	10.1016/j.gsd.2021.100716
Database	NAL-Catalogue (AGRICOLA)

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