Formation and structure of fine multi-particle layered organo-modified zirconium dioxides fabricated by Langmuir–Blodgett technique

Fujimori, Atsuhiro; Honda, Nanami; Iwashita, Hayato; Kaneko, Yohei; Arai, Shuntaro; Sumita, Masao; Akasaka, Shuichi

doi:10.1016/j.colsurfa.2014.01.050

Cited by 23 publications

(24 citation statements)

References 31 publications

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“…Therefore, the adsorbed water nanolayer on the sepiolite in the reaction system was also positively charged and capable of electrostatic interactions with the phosphonate anions. Dispersions were prepared by combining an aqueous solution of sepiolite with a methanolic solution of ODP or FDP (the detailed organo‐modification procedure of sepiolite was presented elsewhere ). Toluene was then poured into the sepiolite dispersion while it was stirred, and the organo‐sepiolite particles migrated from the methanolic dispersion into the toluene phase.…”

Section: Methodsmentioning

confidence: 99%

“…For example, simple and highly efficient surface modification methods have been applied to nanodiamonds , montmorillonite clay , zirconia , zinc oxide nanodisks , magnetic fine particles , and carbon nanotubes at the oil–water interface. The resultant organo‐modified nanofillers were nanodispersed not only in a polymer matrix but also into organic solvents , indicating their amphiphilic properties .…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Polymer‐Based Nanocomposites Composed of Sustainable Organo‐Modified Needlelike Nanoparticles and Their Particle Dispersion States in the Matrix

Hirayama

Hayasaki

Okano

et al. 2019

Polymer Engineering & Sci

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Polymer‐based nanohybrid materials were created using sustainable sepiolite clay composed from ubiquitous elements. Although sepiolite is generally recognized as a fibrous natural clay mineral, it turned out to be an acicular microcrystal because of the organo‐modification of the outermost surface. Surface modification was performed using phosphonic acid derivatives containing hydrocarbon chains or fluorocarbon chains. Formation of a bidentate bond enhanced the desorption temperature and made nanocomposite preparation possible by melt compounding with polymers having a high melting point. As a result of organo‐modification, amphiphilic sepiolite was obtained, and nanodispersion in an organic solvent was achieved. This technology was useful for detailed evaluation of sepiolite morphology. The nanocomposite of crystalline polymers/organo‐modified sepiolites achieved uniform dispersion of these nanofillers in the matrix polymer. The introduction of 1 wt% nanofillers did not impair the transparency of the matrix polymer. As a result, a lamellae structure of the polymer developed, the crystallinity increased, and the mechanical properties improved. In addition, the crystallization temperature was improved, indicating that organo‐modified sepiolites may act as a nucleating agent. It was found that sepiolite nanofiller with a highly aggregated tendency can achieve a well‐nanodispersed state, even in phase‐separable fluoropolymers, by applying fluorocarbon modification. POLYM. ENG. SCI., 60:541–552, 2020. © 2019 Society of Plastics Engineers

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of Polymer‐Based Nanocomposites Composed of Sustainable Organo‐Modified Needlelike Nanoparticles and Their Particle Dispersion States in the Matrix

Hirayama

Hayasaki

Okano

et al. 2019

Polymer Engineering & Sci

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“…The surfaces of the NDs were modified with stearic acid, hereafter described as organo‐modification . P(VDF‐TeFE)/organo‐ND was extruded at 145°C using a twin‐screw extruder (Labo kneader mill, Toshin Co., Ltd.).…”

Section: Methodsmentioning

confidence: 99%

Spherulitic formation and characterization of partially fluorinated copolymers and their nanohybrids with functional fillers

et al. 2016

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Poly[vinylidenefluoride‐co‐(tetrafluoroethylene)] (P(VDF‐TeFE)) exhibited clear spherulitic texture with negative birefringence. The number and growth rates of the spherulites decreased at high crystallization temperature than at low crystallization temperature. Nonetheless, overall larger spherulites were found at high crystallization temperature and the brightness of the spherulites increased very fast at low crystallization temperature, thereafter it seemed as diminution of birefringence. AFM was used to investigate the impact of organo modified nanodiamond(ND) on spherulitic textures, lamellar thickness, and thickness distribution of P(VDF‐TeFE) copolymer. Poly[ethylene‐co‐(tetrafluoroethylene)] (ETFE) also confirmed spherulites structure and the boundaries could be clearly observed. By incorporation of the organo modified nanodiamond (ND) and organo‐modified montmorillonite (MMT) in fluropolymer matrix, it was found that spherulitic texture was seriously disordered and their nanohybrids was found only to have poorly developed spherulite structure. Both of the nanohybrids samples show better crystallization temperature as compared to their neat copolymer samples. Furthermore, the incorporation of nanoparticles decreased the size of the spherulites. POLYM. ENG. SCI., 57:161–171, 2017. © 2016 Society of Plastics Engineers

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“…6 In addition, the authors have successfully fabricated highly ordered particle assemblies by the synthesis of longchain fatty acid-modified zirconium oxide (zirconia) by using novel organo-modification methods. 7 In the present study, high-density and twodimensional arranged nanodiamond organization is performed by an interfacial chemical method. Ultrathin organo-modified nano-diamond films are constructed by floating Langmuir monolayers.…”

Section: Introductionmentioning

confidence: 99%

The Role of Modifying Molecular Chains in the Formation of Organized Molecular Films of Organo-modified Inorganic Particles

2017

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The role of organo-modifying molecular chains in the formation of molecular films of organo-modified nanodiamond is discussed herein based on interfacial chemical particleintegration of organo-modified nanodiamond having a particle size of 5 nm. The surface of nanodiamond is known to be covered with a nano-layer of adsorbed water. This water nano-layer was exploited for organo-modification of nanodiamond with long-chain fatty acids via adsorption, leading to nano-dispersion of nanodiamond in general organic solvents as a mimic of solvency. The organo-modified nanodiamond dispersed "solution" was used as a spreading solution for depositing a mono-"particle" layer on the water surface, and a Langmuir particle layer was integrated at the air/water interface. Multi-"particle" layers were then formed via the Langmuir-Blodgett technique, and were subjected to fine structural analysis. The effect of organo-modification enabled integration and multilayer formation of inorganic nano-particles due to enhancement of the van der Waals interactions between the chains. That is to say, the "encounter" between the organo-modifying chain and the inorganic particles led to solubilization of the inorganic particles and enhanced interactions between the particles, which can be regarded as imparting new function to the organic molecules.

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Formation and structure of fine multi-particle layered organo-modified zirconium dioxides fabricated by Langmuir–Blodgett technique

Cited by 23 publications

References 31 publications

Preparation of Polymer‐Based Nanocomposites Composed of Sustainable Organo‐Modified Needlelike Nanoparticles and Their Particle Dispersion States in the Matrix

Preparation of Polymer‐Based Nanocomposites Composed of Sustainable Organo‐Modified Needlelike Nanoparticles and Their Particle Dispersion States in the Matrix

Spherulitic formation and characterization of partially fluorinated copolymers and their nanohybrids with functional fillers

The Role of Modifying Molecular Chains in the Formation of Organized Molecular Films of Organo-modified Inorganic Particles

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