Synthesis and characterization of the surface modified titanium dioxide/epoxy nanocomposites

Radoman, S Tijana; Terzic, Nenad; Spasojević, M.; Dzunuzovic, V Jasna; Marinković, Dragan; Jeremic, B Katarina; Dzunuzovic, S Enis

doi:10.5937/savteh1501007r

Cited by 6 publications

(6 citation statements)

References 29 publications

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“…% of TiO 2 nanoparticles within the epoxy polymeric matrix had the most pronounced effect on the T g value which increased from 127.9 • C for neat epoxy coating system to ∼144 • C ET1. Similar observations were reported by Radoman et al (2015), who claimed that the epoxy resin is able to exhibit higher T g values when it reinforced with TiO 2 nanoparticles due to the role of these particles in reducing the segments mobility at the nanoparticles-epoxy interfaces by the presence of physical attractive interactions.…”

Section: Differential Scanning Calorimetry (Dsc)supporting

confidence: 88%

Effects of TiO2 Nanoparticles on the Overall Performance and Corrosion Protection Ability of Neat Epoxy and PDMS Modified Epoxy Coating Systems

et al. 2020

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Section: Differential Scanning Calorimetry (Dsc)supporting

confidence: 88%

Effects of TiO2 Nanoparticles on the Overall Performance and Corrosion Protection Ability of Neat Epoxy and PDMS Modified Epoxy Coating Systems

et al. 2020

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“…13 Li and Niu (2015) successfully synthesized silver-gallic acid nanoparticles that have high antimicrobial and low cytotoxicity activities towards normal cells. 14 Radoman et al (2015) reported the synthesis and characterization of TiO 2 nanoparticles modified with octyl gallate 15 , whilst the latest research by Cordova et al in 2017 showed that solid lipid-octyl gallate nanoparticles can improve the antimetastatic activity in mice model of lung cancer. 16 Synthesis and characterization of gallic acid nanoparticles with ionic gelation methods, as well as study to determine the its invitro anticancer activity has never been reported.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Cytotoxicity Evaluation of Gallic Acid Nanoparticles Towards Breast T47D Cancer Cells

Arsianti¹,

Bahtiar²,

Fadilah³

et al. 2020

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Introduction: Gallic acid is a naturally polyphenolic acid which shows cytotoxicity against several cancer cells, as well as it displays chemo-preventive activity which is attributed to its strong apoptosis-inducing and antioxidant effects. Thus, gallic acid has become an attractive substance to be further developed due to its strong cytotoxic activity. This study aimed to synthesize gallic acid nanoparticle coating with alginate-chitosan, and evaluate its cytotoxicity against breast T47D cancer cells. Methods: Gallic acid nanoparticle was synthesized using ionic gelation method. The yield, size and morphology of the nanoparticles were determined by UV-Vis Spectroscopy, Transmission electron microscopy (TEM) and Fourier Transform Infrared (FTIR) spectroscopy. Cytotoxicity evaluation of gallic acid nanoparticle towards breast T47D cancer cell is carried out by MTT(3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazoliumbromide) assay. Results: Spherical nanoparticles of gallic acid with the size of 100-200 nm has been successfully synthesized in 96% of yield. Compared to gallic acid (IC 50 : 20.86 µg/mL) and alginate-chitosan nanoparticle (IC 50 : 38.46 µg/mL), gallic acid coating with alginate-chitosan nanoparticles demonstrated higher cytotoxicity towards breast T47D cancer cells with IC 50 value of 9.03µg/mL. Conclusion: Our results clearly confirmed that gallic acid nanoparticles coating with alginate-chitosan showed a strong cytotoxicity towards breast T47D cancer cells, which is potential to be developed as a candidate for new anti-breast cancer agent.

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“…Вместе с этим они имеют ряд отрицательных качеств: повышенная хрупкость, пожароопасность, низкая стойкость к действию климатических факторов [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionunclassified

Epoxy composites with increased operational characteristics, filled with dispersed mineral fillers

Mostovoi

Nurtazina

Kadykova

2018

Vestn. Voronež. gos. univ. inž. tehnol.

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The aim of this work is to increase the physicochemical, deformation and strength properties and to reduce the combustibility of composites on the base of epoxy resin by introducing a oligo(resorcinophenyl phosphate) with terminal phenyl groups Fyrolflex - modifier of polyfunctional action, and disperse mineral fillers – diorite and chromite. Result of the studies established that the optimum amount of modifier in the composition of the epoxy resin is 40 mass parts, which provides an increase in the operational properties of the composites: the breaking stress at bending increases by 2 times, the breaking stress at compression increases by 28%, the impact strength increases twice, while the modulus of elasticity and hardness of composites slightly decrease. The addition of modifier into the epoxy polymer provides an increase in heat resistance from 86 to 132–156 °C, also it improves the thermal stability of the composite, which manifests itself in a shift from the initial temperature to higher temperatures (from 200 to 230 °C), while it is noticed furthermore that yield of carbonized Structures was risen from 40 to 54%, providing less release of volatile pyrolysis products into the gas phase, which leads to the decrease in flammability of the epoxy composite and it can be shown in the reduction of its loss in mass while cauterizing in air from 78 to about 4.7% and an increase in the oxygen index from 19 to 28% by volume what transfers the material into class with low flammability. The rational content of diorite and chromite (100 parts by weight of chromite and 50 parts by mass of diorite) is chosen as a filler, which ensures an increase in physical and mechanical characteristics and a reduction in the cost of production: the breaking stress increases by 15–30% and the elastic modulus at bending increases 3.5–4.5 times, the breaking stress increases by 35%, and the tensile modulus by 50–240%, the hardness increases by 68–95%, while the impact strength remains at the level of the unfilled plasticized composite. In addition, it is proved that the addition of both diorite and chromite provides an increase in the thermal and heat resistance of epoxy composites, also lowers combustibility of the epoxy composite: the weight loss at ignition in air is reduced to 1.2–2.2% and the oxygen index rises from 28 to 30–35% by volume, thus the material does not support combustion in air and belongs to the class of hardly flammable. The study was carried out with the financial support of a grant for young scientists of the SSTU named after Gagarin Yu.A. (project SGTU-287).

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Synthesis and characterization of the surface modified titanium dioxide/epoxy nanocomposites

Cited by 6 publications

References 29 publications

Effects of TiO2 Nanoparticles on the Overall Performance and Corrosion Protection Ability of Neat Epoxy and PDMS Modified Epoxy Coating Systems

Effects of TiO2 Nanoparticles on the Overall Performance and Corrosion Protection Ability of Neat Epoxy and PDMS Modified Epoxy Coating Systems

Synthesis, Characterization, and Cytotoxicity Evaluation of Gallic Acid Nanoparticles Towards Breast T47D Cancer Cells

Epoxy composites with increased operational characteristics, filled with dispersed mineral fillers

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