Synthesis and Characterization of Magnetic Nanocontainers

Tapeinos, Christos; Kartsonakis, Ioannis A.; Liatsi, Pénélope; Daniilidis, Ioannis; Κορδάς, Γ.

doi:10.1111/j.1551-2916.2007.02240.x

Cited by 20 publications

(11 citation statements)

References 27 publications

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“…The shells used for the containers are created either by in-situ hydrolysis of the corresponding metallic salt in the presence of core materials [42][43][44][45][46][47] , or by calcination of polymer particles coated with uniform inorganic shells [48][49][50][51][52][53][54] . Recently, several nano-containers have been synthesized using a two-step process.…”

Section: Nanocapsule and Microcapsule-based Polymer Coatingsmentioning

confidence: 99%

Techniques for synthesizing and applying smart coatings for material protection

Makhlouf¹

2014

Handbook of Smart Coatings for Materials Protection

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Section: Nanocapsule and Microcapsule-based Polymer Coatingsmentioning

confidence: 99%

Techniques for synthesizing and applying smart coatings for material protection

Makhlouf¹

2014

Handbook of Smart Coatings for Materials Protection

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“…Furthermore, they have been of interest as fillers, coatings, capsule agents, etc., because of their lower density and optical properties 7–10 . Such “shells” are created either by hydrolysis, in situ, of the corresponding metallic salt in the presence of core materials 11–20 or calcinating polymer particles coated with uniform inorganic shells 21–32 . A very interesting topic is the production of “shells” that are constructed of corrosion inhibitor materials such as compositions of cerium and molybdenum oxides.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Cerium Molybdate Nanocontainers and Their Inhibitor Complexes

Kartsonakis

Κορδάς

2009

Journal of the American Ceramic Society

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Cerium molybdate nanocontainers were synthesized using a twostep process and then loaded with 8-hydroxyquinoline (8-HQ) or with 1-H-benzotriazole-4-sulfonic acid (1-BSA). First, polystyrene (PS) nanospheres were produced using emulsion polymerization. Second, the PS spheres were coated via the sol-gel method to form a cerium molybdate layer. Finally, the nanocontainers were made by calcination of cerium molybdate coated PS nanospheres. The products were characterized by scanning electron microscopy (SEM/EDX), transmission electron microscopy, FT-infrared (FT-IR) spectroscopy, X-ray diffraction, thermogravimetric analysis (TGA), and differential thermal analysis. Moreover, nanocontainers were loaded with 8-HQ or with 1-BSA and their presence was confirmed with FT-IR. The loading of the inhibitors in the nanocontainers was estimated with TGA. The loading amount of 8-HQ was 5.22% w/w and that of 1-BSA was 16.43%. Based on the size of the nanocontainers and the assumption that they are not broken, we deduced to the amount of approximately with 1.07 Â 10 6 molecules of 8-HQ and 2.35 Â 10 6 molecules of 1-BSA per nanocontainer. Furthermore, release of 8-HQ or 1-BSA in corrosive environment was studied by potentiodynamic measurements for aluminum alloys 2024-T3 (AA2024-T3) and DC01 carbon steel (DC01-CS) samples, showing that the inhibitors are released from the nanocontainers, suppressing the corrosion activities. SEM photographs confirmed that the nanocontainers maintained their shape after suspension in 0.5M NaCl solution for more than 72 h. Moreover, release of 8-HQ or 1-BSA in water was studied using spectrophotometer.

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“…The synthesis of NCs consisted of two steps; in the first step the polymethacrylic methacrylate (PMMA) core was fabricated while during the second step the shell was created on the seed surface via emulsion polymerisation. The detailed synthetic procedure of hollow NCs has been previously presented (Efthimiadou et al, 2017;Tapeinos, 2014). Briefly, the PMMA core synthesis carried out by emulsion polymerisation, MMA (1.18 gr, 1 ml) was added into a 25 ml round flask filled with water (24 ml) and agitated under nitrogen atmosphere.…”

Section: Synthesis Of Ncsmentioning

confidence: 99%

In vivo toxicity study of quatro stimuli nanocontainers in pregnant rats: Gestation, parturition and offspring evaluation

Lelovas

Efthimiadou

Mantziaras

et al. 2018

Regulatory Toxicology and Pharmacology

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The aim of the present study was to investigate the impact of intravenous administration of newly fabricated nanocontainers (NCs) on the last third of pregnancy in rats. Fifteen pregnant 3-month-old Wistar rats were separated into 3 groups. On the 15th and 17th day of pregnancy all animals received an intravenous administration of 1 ml of 15 mg of NCs (Group A), 1 ml of 5 mg NCs (Group B) while Control group received 1 ml of 0.9% NaCl. On the 14th and 17th of pregnancy ultrasonography was performed and the parameters evaluated were the width of placenta, the length and width of the embryonic sac, the foetus length and the heart rate. On parturition the number of pups per dam was evaluated. Half of the pups were euthanised the day after parturition and their liver and kidney was histologically evaluated and for the rest of the pups the body growth curve was evaluated until the age of 14 week. At the end of the 14th week the remaining pups were euthanised and their liver and kidney was histologically evaluated. At weaning the dams were euthanised and their liver and kidney was histologically evaluated. Ultrasonography: Baseline measurements of the width of placenta, the length and width of embryonic sac, the foetus length and the heart rate on the 14th day of pregnancy, revealed no statistical significant differences between groups. Comparison of the same values on the 17th day of pregnancy after 2 intravenous administrations of NCs showed no statistical significant effect on the respective parameters. The administration of NCs had no impact on the mean number of pups per dam. Additionally, no impact of the NCs on the body weights of the pups was observed on the 1st day after parturition. Moreover, comparisons between groups, for both sexes showed no difference on growth rate. During the histological evaluation no inflammatory, degenerative or neoplastic lesions were observed as far as the newborn, adult offspring and dams were concerned. According to our results no toxic impact of the low and high doses of the NCs was observed on the parameters selected to be evaluated.

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Synthesis and Characterization of Magnetic Nanocontainers

Cited by 20 publications

References 27 publications

Techniques for synthesizing and applying smart coatings for material protection

Techniques for synthesizing and applying smart coatings for material protection

Synthesis and Characterization of Cerium Molybdate Nanocontainers and Their Inhibitor Complexes

In vivo toxicity study of quatro stimuli nanocontainers in pregnant rats: Gestation, parturition and offspring evaluation

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