Structure, morphology and dielectric properties of hexagonal boron nitride nanoparticles reinforced biopolymer nanocomposites

Shareef, Shahryar; Chidambaram, K.; Pasha, S. K. Khadheer

doi:10.1080/03602559.2018.1542726

Cited by 8 publications

(6 citation statements)

References 62 publications

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“…The mechanical properties of polymers relay on their chain length, amount of crystallinity and cross linkage [47] and is a significant property for various uses. The tensile behavior for the PNCs (CS/HPMC/CDs) is found at room temperature (27°C) Fig.…”

Section: Mechanical Properties Of Cs/hpmc/cds Compositesmentioning

confidence: 99%

Carbon Quantum dots doped Chitosan/HPMC nano composites and their Functional, Structural, Morphological, Dielectric and Tensile properties

Shareef,

Narasaiah,

Madhuri

et al. 2023

E3S Web Conf.

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Carbon Quantum Dots (CQDs) were prepared from modified hydrothermal method using Citric acid and ethane diamine as a source material. The synthesized CQDs were characterized by UV-Vis spectroscopy, Fluorescence Studies (FL), Atomic force microscopy (AFM). The particle size is conformed from Dynamic Light Scattering (DLS) analysis. The synthesized CQDs were doped in polymer blend with various weight percentages and the further characterizations were carried out for X-Ray Diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), dielectric properties, and tensile properties at room temperature and higher temperatures with the help of Universal Testing Mission (UTM). The dielectric behavior of Chitosan/HPMC/CQDs polymer nanocomposites (PNCs) were studied in the range of 50 Hz to 5 MHz frequency and the temperature ranging from 30-100 °C, using LCR meter. The dielectric constant (ε'), dielectric loss (ε') are found with different wt% of CQDs in the PNCs.

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Section: Mechanical Properties Of Cs/hpmc/cds Compositesmentioning

confidence: 99%

Carbon Quantum dots doped Chitosan/HPMC nano composites and their Functional, Structural, Morphological, Dielectric and Tensile properties

Shareef,

Narasaiah,

Madhuri

et al. 2023

E3S Web Conf.

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“…Therefore, capacitors that can store more energy are needed. [21] It is important to develop new dielectric materials with high permeability and low dielectric loss in this context. However organic polymers generally have low dielectric permittivity compared to inorganic materials.…”

Section: Introductionmentioning

confidence: 99%

“…The storage of electrical energy plays an important role in electric vehicles, electronic devices, and power systems. Therefore, capacitors that can store more energy are needed [21] . It is important to develop new dielectric materials with high permeability and low dielectric loss in this context.…”

Section: Introductionmentioning

confidence: 99%

Dielectric Biodegradable Biopolymer‐Based Graphene Nanocomposites for Use in the Packaging Industry and Capacitor Application

Gürler

Torğut

2022

ChemistrySelect

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In this study, polyhydroxyalkanoate (PHA) and polylactic acid (PLA)‐Graphene (G) nanocomposite films were synthesized by taking different concentrations of G via the solution casting process, and their structural, mechanical, opacity, thermal and dielectric properties were examined for the first time. Scanning electron microscopy (SEM) was used for investigating surface morphology. Films containing graphene were more opaque than films without graphene. The incorporation of graphene into the polymer matrix improved the mechanical property. The tensile strengths of the control PHA/PLA film and the graphene‐reinforced 1 %G‐PHA/PLA nanocomposite films were 18.98 and 24.34 MPa, respectively. Thermogravimetric analysis results showed that PHA/PLA−G nanocomposites had good thermal stability below 300 °C. Considering the dielectric measurements, it is seen that the dielectric constant (έ) and dielectric loss (ϵ”) decreased with increasing frequency and less changed at higher frequencies. The developer feature of graphene is remarkable in both parameters. The electrical conductivity of PHA/PLA−G nanocomposites was also examined as a function of frequency at room temperature. As the amount of G increased from 1 %wt to 5 %wt, the conductivity of the composites increased.

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“…Chitosan is a straight-chain natural copolymer structurally composed of D-glucosamine and N-acetylated-glucosamine obtained by partial deacetylation of chitin [ 16 , 17 ]. Scientific studies on chitosan have increased since 1990.…”

Section: Introductionmentioning

confidence: 99%

“…Thanks to this feature, it has been used to prepare metal nanocomposites in various fields in electronics, biomedicine, optical devices, and as a catalyst. In the past, the extraordinary properties of each individual component have been observed synergistically in chitosan-prepared materials of polymers, oxidizing agents, and metal nanoparticles [ 16 ]. In addition, the applicability of chitosan in many different biomedical fields, from the proliferation of the gums to coronary stent applications, from its antibacterial effects to the regeneration of endothelial cells, has been proven by recent studies [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of boron nanosized particles prepared with various surfactants and chitosan in terms of physical stability and cell viability

ÖZAKAR¹,

BİNGÖL²,

ÖZAKAR³

2022

Turkish Journal of Chemistry

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Nanosuspensions (NS) are one of the new generation drug carrier forms developed to overcome the deficiencies of drugs with poor water solubility or insolubility and are considered to be one of the most successful approaches to formulate compounds in recent years. Boron nitride (BN) is insoluble in water and chemically more stable than carbon, it offers better biological superiority although the application of carbon structures in the biomedical field has increased in recent years. Chitosan is a polymer with excellent processability and biocompatibility thanks to its high dielectric constant. In addition, chitosan has a high affinity for metal ions. This study aims to combine BN and chitosan, which have unique properties, using six different surfactants, and to investigate their long-term stability for the use of both in medicine. In this direction, 24 different BN NS formulations were prepared. The 6th and 12th months’ stability of these formulations were studied at +25 °C, 60% relative humidity, and +4 °C. Also, the prepared formulations were evaluated by cell viability test and examined in terms of toxicity. FTIR spectra of the formulations were taken and their morphologies were characterized by SEM. Prepared NSs with Poloxamer 407 + Tween (N1 − N6) were found to be the most stable formulations for 6 and 12 months both at +4 °C and +25 °C. The fact that BN has a negative zeta potential and chitosan has a high positive zeta potential in formulations is very important in terms of their potential antimicrobial activities. The low cellular toxicity of BN NSs, especially chitosan-coated BN NSs, at higher concentrations shows that they have enormous potential in the diagnosis and treatment of diseases with boron-based compounds in the future.

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Structure, morphology and dielectric properties of hexagonal boron nitride nanoparticles reinforced biopolymer nanocomposites

Cited by 8 publications

References 62 publications

Carbon Quantum dots doped Chitosan/HPMC nano composites and their Functional, Structural, Morphological, Dielectric and Tensile properties

Carbon Quantum dots doped Chitosan/HPMC nano composites and their Functional, Structural, Morphological, Dielectric and Tensile properties

Dielectric Biodegradable Biopolymer‐Based Graphene Nanocomposites for Use in the Packaging Industry and Capacitor Application

Investigation of boron nanosized particles prepared with various surfactants and chitosan in terms of physical stability and cell viability

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