Optimization and thermal effects of polyaniline nanomaterial synthesized by chemical oxidative polymerization method

Dhachanamoorthi N; Padmapriya B

doi:10.26524/nr.3.14

Optimization and thermal effects of polyaniline nanomaterial synthesized by chemical oxidative polymerization method

Nanoscale Reports ◽

10.26524/nr.3.14 ◽

2020 ◽

Vol 3 (2) ◽

Author(s):

Dhachanamoorthi N ◽

Padmapriya B

Keyword(s):

Particle Size ◽

Antibacterial Activity ◽

Functional Group ◽

Oxidative Polymerization ◽

Quantitative Information ◽

Particle Size Analysis ◽

Polymer Materials ◽

Size Analysis ◽

Chemical Oxidative Polymerization ◽

Polymerization Method

Scientific zone has a great attention to the polyaniline (PANI) nanomaterials which is an organic, conductive and a conjugated polymer. It has variety of applications such as in batteries, microelectronics displays, antistatic coatings, electromagnetic shielding materials and actuators [1]. PANI was synthesized by using chemical oxidative polymerization method. The preparation process carried out by the main reagent aniline (C6H7N) with the ammonium peroxydisulpate (APS) ((NH4)2S2O8) which act as an oxidant and hydrochloric acid (HCL) as a dopant in an ambient temperature. The synthesized polymer materials are annealed at different temperatures such as 200°C,300°C and 400°C. After annealed treatment, the weight percentage of polymer material are changed were decreases with increase the temperature of pure PANI (0.441g),200°C(0.172g), 300°C(0.147g), 400°C (0.105g). Then the obtained polymer materials are characterized by FTIR, UV-Visible, Particle size analysis (PSA) and Antibacterial analysis. FTIR is used to determine the functional group of polymer nanomaterials. UVVisible exhibits the quantitative information about the polymer nanomaterials by using its band gap. The size of the individual particles and the size distribution range of the respective samples are determined by the Particle Size Analyzer (PSA). Antibacterial activity is used to find the polymer nanomaterials which kills bacteria, or bacteriostatic,which slow down the growth of bacteria. These profiling techniques are used to find the properties like functional group, quantitative information, particle size, antibacterial activity of respective polyaniline nanomaterial samples.

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STABILITY OF ANTI-ACNE NIOSOME GELS CONTAINING BETEL LEAF (PIPER BETLE L.) ESSENTIAL OIL

International Journal of Applied Pharmaceutics ◽

10.22159/ijap.2017.v9s1.72_79 ◽

2017 ◽

Vol 9 ◽

pp. 130

Author(s):

Mahdi Jufri ◽

Muthaharrah . . ◽

Elsa Humairah ◽

Ernie Hermawati Purwaningsih

Keyword(s):

Particle Size ◽

Antibacterial Activity ◽

Essential Oil ◽

Entrapment Efficiency ◽

Particle Size Analysis ◽

Gelling Agent ◽

Gas Chromatography Mass Spectrometry ◽

Size Analysis ◽

Piper Betle ◽

Betel Leaf

Objective: Formulation, antibacterial activity, and stability tests of niosomal gels containing betel leaf (Piper betle L.) essential oil as an anti-acnetreatment were carried out. Niosome vesicular carriers provide drug delivery through the topical and transdermal routes. The aim of creating theniosome preparation was to increase the transfollicular penetration and improve the stability of the gel.Materials and Methods: Betel leaf essential oil extraction was performed using the steam distillation method, and essential oil compoundidentification was completed using gas chromatography–mass spectrometry. The niosome formulations were generated with two cholesterol–surfactant amount ratios, specifically, 1:1 (F1) and 1:2 (F2; w/w). The niosomes were evaluated, including the entrapment efficiency test, usingultraviolet-visible spectrophotometry; particle size analysis was performed using a particle size analyzer; and the vesicle morphology test wasconducted using transmission electron microscopy. The niosomes were made into a gel using 0.5% carbopol 940 as the gelling agent. The niosomegels were evaluated for their organoleptic properties, pH, viscosity, antibacterial activity against Propionibacterium acnes, and stability for 12 weeksat three different storage temperatures, namely, low temperature (4±2°C), room temperature (28±2°C), and high temperature (40±2°C).Results: The test results showed that the F2 niosome gel was more stable than the F1 gel was, while the antibacterial activities of the F1 and F2niosome gels did not differ significantly.Conclusion: The niosomal gel preparations’ inhibition of the growth of P. acnes bacteria was decreased compared with that of the essential oils.

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Biosythesis of Silver Nanoparticles using Putri Malu (Mimosa pudica) Leaves Extract and Microwave Irradiation Method

Molekul ◽

10.20884/1.jm.2016.11.2.221 ◽

2016 ◽

Vol 11 (2) ◽

pp. 288

Author(s):

Is Fatimah ◽

Nur Afisa Lintang Mutiara

Keyword(s):

Particle Size ◽

Silver Nanoparticles ◽

Antibacterial Activity ◽

Microwave Irradiation ◽

Particle Size Analysis ◽

Size Analysis ◽

Scattering Method ◽

Mimosa Pudica ◽

Microwave Irradiation Method ◽

Water As Solvent

In this paper, the biosynthesis of silver nanoparticles (AgNPs) using Mimosa pudica extract is discussed. Mimosa pudica leaves extract using water as solvent was used as bio-reductor to an aqueous solution of silver nitrate (AgNO3) and in order to accelerate the reduction, microwave irradiation method was applied. The AgNPs obtained were characterized using UV-Vis spectrophotometry, FTIR spectrophotometry, XRD, SEM-EDX, and particle size analysis based on dynamic scattering method. Effect of preparation method to the formation of AgNPs is also evaluated in antibacterial activity towards E.coli and P. aeruginosa. Rapid and ecofriendly biosynthesis of stable silver nanoparticles was observed in this study. The characterization results and antibacterial assay indicated the uniform and smaller particle size of AgNPs obtained by using microwave method and positively enhance the antibacterial activity against tested bacteria.

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Annealed effects of poly- o- toluidine (POT) nanomaterial at different temperatures

Nanoscale Reports ◽

10.26524/nr.3.7 ◽

2020 ◽

Vol 3 (1) ◽

pp. 34-38

Author(s):

Priyanka S ◽

Dhachanamoorthi N ◽

Nandhin M

Keyword(s):

Antibacterial Activity ◽

Oxidative Polymerization ◽

Electron Transition ◽

Polymer Materials ◽

Polymerization Process ◽

Spectroscopic Techniques ◽

Heat Treated ◽

Different Temperatures ◽

Polymerization Method ◽

Individual Particles

Poly-O-Toluidine (POT) nanomaterials were prepared by using chemical oxidative polymerization method. The polymerization process was carried out using the monomer o- toluidine (1M), ammonium peroxydisulphate (APS) (0.5M) as oxidant and the dopant sulphuric acid (3M). The resultant polymer materials are heat treated at various temperatures such as 200°C, and 400°C. The prepared POT materials are characterized by using different Spectroscopic techniques, Fourier Transform Infrared Spectroscopy (FTIR), Ultraviolet Visible (UV-VIS) Spectrometry, Particle Size Analyser (PSA), and biological application like Anti-Bacterial activities. The FTIR study shows the various functional groups in POT. The optical properties of prepared polymer material band gap, electron transition are calculated by using UV-VIS techniques. The PSA studies are revealed that the measurement of the size distribution of individual particles in a POT nanomaterials. The antibacterial activity of the POT nanomaterials are indicates that the several microorganisms. These POT nanomaterials are used to examines that the Chemical, optical, size of the nanomaterials and antibacterial activity for different Bactria.

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