Studies of Wear and Tear and Hydrogen Bonding in Dendrimeric Fluorinated Polysilsequioxanes Coatings on an Aluminum Surface

Tiwari, Atul; Liskiewicz, Tomasz; Hihara, Lloyd H.

doi:10.1021/acs.iecr.6b00203

Cited by 5 publications

(2 citation statements)

References 54 publications

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“…Advantageously, this exposed more number of reactive sites over the A Fe x O y surface than either over B Fe x O y or C Fe x O y . In all three samples of A Fe x O y , B Fe x O y , and C Fe x O y , short peaks ranging from 3500 to 4000 cm –1 indicate the presence of free clustered water (molecular water) and weakly bound water (adsorbed water) . These peaks centered at 3787, 3674, 3779, and 3657 cm –1 arise due to strong H-bonded water molecules over the Fe x O y surfaces.…”

Section: Resultsmentioning

confidence: 96%

Hydro-ionothermally Generated Paramagnetic Fe State-Embedded Ferromagnetic Iron Oxide with a 2D Hexagonal Nanostructure: A Conceptual Intervention on the Methylene Blue Degradation Mechanism

Joseph,

K K,

K S

et al. 2023

Crystal Growth & Design

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Adatom imperfections over the 2D crystalline topology can be purposefully or accidentally produced, and they can result in either desirable or undesirable features. Here, the work focuses on two key aspects of the veneer of synthetic inorganic chemistry: morphological tailoring using an ionic liquid (IL) template and the implanting of 2D surfaces with ILgenerated defects. By adjusting two factors, the amount of IL and autoclave time, we were able to fabricate hexagonal-shaped ferromagnetic 2D nanostructures with Fe adatom defects. These hexagonal-shaped flakes were found to be multiphase, consisting of both Fe 2 O 3 (hematite), which has a space group of R3̅ c (hexagonal structure), and Fe 3 O 4 (magnetite), which has a space group of Fd3̅ m (cubic structure). According to the photoelectron spectroscopy (XPS) study, the high hydroxyl oxygen content and the high likelihood of producing Fe(OH) 2 resulted in the production of a hexagonal structure with an ideal shape. Even though ferromagnetic nature predominated, more Fe adatoms were present on the surface, leading to paramagnetic + Fe states. The production of leucomethylene blue (LMB) is indicated by a reversible rise in the UV−visible peaks at 202, 243, and 662 nm. A larger concentration of Fe 3+ on the catalyst surface, which forms a stable LMB-Fe 3+ complex, is directly associated with the creation of the LMB form. While challenging to isolate, LMB intermediate can form a stable complex when combined with a metal with a high oxidation state. This research also advances our understanding of the mechanisms underlying defect chemistry and the impact of ILs on solid-state crystallization's developmental morphology. Achieving a 2D hexagonal shape in our scenario was definitely feasible with a few IL under more watery and aerobic circumstances.

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Section: Resultsmentioning

confidence: 96%

Hydro-ionothermally Generated Paramagnetic Fe State-Embedded Ferromagnetic Iron Oxide with a 2D Hexagonal Nanostructure: A Conceptual Intervention on the Methylene Blue Degradation Mechanism

Joseph,

K K,

K S

et al. 2023

Crystal Growth & Design

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“…Many applications of polysilsesquioxane (PSQ) in general, including PMSQ, are found in different industries because of the superior properties of these materials. This includes hybrid materials for coating [ 7 , 8 ], storage of energy [ 9 , 10 , 11 ], drug carriers and their liberation control [ 12 , 13 ], environment protection [ 14 , 15 ]. However, at the best of our knowledge, the potential for the development of PMSQ-based functional nanocomposites for the manufacture of unmanned aerial vehicle (UAV) blades by thermoforming, has not yet been elucidated in the literature.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Thermoforming of Pmsq-Hdpe for the Manufacture of a NACA Profile of Small Dimensions

et al. 2021

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Unmanned aerial vehicles (UAVs) or drones are attracting increasing interest in the aviation industry, both for military and civilian applications. The materials used so far in the manufacture of UAVs are wood, plastic, aluminum and carbon fiber. In this regard, a new family of high-density polyethylene (HDPE) nanocomposites reinforced with polymethylsilsesquioxane nanoparticles (PMSQ), with mechanical performances significantly superior to those of pure HPDE, has been prepared by a fusion-combination process. Their viscoelastic properties were determined by oscillatory shear tests and their viscoelastic behavior characterized by the Lodge integral model. Then, the Lagrangian formulation and the membrane theory assumption were used in the explicit implementation of the dynamic finite element formulation. For the forming phase, we considered the thermodynamic approach to express the external work in terms of closed volume. In terms of von Mises stress distribution and thickness in the blade, the results indicate that HDPE-PMSQ behaves like virgin HDPE. Furthermore, its materials, for all intents and purposes, require the same amount of energy to form as HDPE.

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Recent progresses in two-dimensional correlation spectroscopy (2D-COS)

Park

Jin

Noda

et al. 2018

Journal of Molecular Structure

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Studies of Wear and Tear and Hydrogen Bonding in Dendrimeric Fluorinated Polysilsequioxanes Coatings on an Aluminum Surface

Abstract: ABSTRACT

Cited by 5 publications

References 54 publications

Hydro-ionothermally Generated Paramagnetic Fe State-Embedded Ferromagnetic Iron Oxide with a 2D Hexagonal Nanostructure: A Conceptual Intervention on the Methylene Blue Degradation Mechanism

Hydro-ionothermally Generated Paramagnetic Fe State-Embedded Ferromagnetic Iron Oxide with a 2D Hexagonal Nanostructure: A Conceptual Intervention on the Methylene Blue Degradation Mechanism

Investigation on the Thermoforming of Pmsq-Hdpe for the Manufacture of a NACA Profile of Small Dimensions

Recent progresses in two-dimensional correlation spectroscopy (2D-COS)

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