Preparation and surface modification of highly dispersed nano-ZnO with stearic acid activated by N,N′-carbonyldiimidazole

Chen, Hengzhi; Guo, Zhengkui; Jia, Lingling

doi:10.1016/j.matlet.2012.05.036

Cited by 17 publications

(13 citation statements)

References 12 publications

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“…Hydrophobic ZnO nanoparticles were produced by Chen et al [ 86 ] and a novel treatment process was developed by them to obtain highly dispersed and long-term stable ZnO nanoparticles, in an organic matrix. Aminopropyltriethoxysilane (APS) was grafted onto the surface of ZnO nanoparticles, and a long carbon chain of stearic acid (SA) was introduced through a condensation reaction between APS and the activated SA with N , N′ -carbonyldiimidazole (CDI).…”

Section: Methods Of Modification Of Zinc Oxidementioning

confidence: 99%

Zinc Oxide—From Synthesis to Application: A Review

Kołodziejczak-Radzimska

2014

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Zinc oxide can be called a multifunctional material thanks to its unique physical and chemical properties. The first part of this paper presents the most important methods of preparation of ZnO divided into metallurgical and chemical methods. The mechanochemical process, controlled precipitation, sol-gel method, solvothermal and hydrothermal method, method using emulsion and microemulsion enviroment and other methods of obtaining zinc oxide were classified as chemical methods. In the next part of this review, the modification methods of ZnO were characterized. The modification with organic (carboxylic acid, silanes) and inroganic (metal oxides) compounds, and polymer matrices were mainly described. Finally, we present possible applications in various branches of industry: rubber, pharmaceutical, cosmetics, textile, electronic and electrotechnology, photocatalysis were introduced. This review provides useful information for specialist dealings with zinc oxide.

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Section: Methods Of Modification Of Zinc Oxidementioning

confidence: 99%

Zinc Oxide—From Synthesis to Application: A Review

Kołodziejczak-Radzimska

2014

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“…It was demonstrated that the amine and thiol organofunctional groups are covalently attached to the silica layer. H. Chen et al [ 24 ] prepared hydrophobic ZnO nanoparticles using aminopropyltriethoxysilane (APTES) as a silane coupling agent. It was demonstrated that APTES was linked to the surface of ZnO nanoparticles through chemical bond bindings.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Different Coupling Agents on Nano-ZnO Materials Obtained via the Sol–Gel Process

et al. 2017

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Hybrid nanomaterials based on zinc oxide were synthesized via the sol–gel method, using different silane coupling agents: (3-glycidyloxypropyl)trimethoxysilane (GPTMS), phenyltriethoxysilane (PhTES), octyltriethoxysilane (OTES), and octadecyltriethoxysilane (ODTES). Morphological properties and the silane precursor type effect on the particle size were investigated using dynamic light scattering (DLS), environmental scanning electron microscopy (ESEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and X-ray diffraction (XRD). The bonding characteristics of modified ZnO materials were investigated using Fourier transform infrared spectroscopy (FTIR). The final solutions were deposited on metallic substrate (aluminum) in order to realize coatings with various wettability and roughness. The morphological studies, obtained by ESEM and TEM analysis, showed that the sizes of the ZnO nanoparticles are changed as function of silane precursor used in synthesis. The thermal stability of modified ZnO materials showed that the degradation of the alkyl groups takes place in the 300–500 °C range. Water wettability study revealed a contact angle of 142 ± 5° for the surface covered with ZnO material modified with ODTES and showed that the water contact angle increases as the alkyl chain from the silica precursor increases. These modified ZnO materials, therefore, can be easily incorporated in coatings for various applications such as anti-corrosion and anti-icing.

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“…By contrast, most CDI–SA–APS–ZnO nanoparticles were isolated, and few aggregates were observed. The reason is that the presence of CDI that promotes the condense reaction between SA and APS–ZnO, which results in the high amount of SA grafted on the surface nanoparticles, leading to enhance interfacial compatibility and stronger adhesion between inorganic nanoparticles and organic polymers .…”

Section: Resultsmentioning

confidence: 99%

“…The detailed process and their size distributions and morphology are described in Ref. . In the current study, the simple process is described as follows.…”

Section: Methodsmentioning

confidence: 99%

Dispersivity of modified ZnO and characterization of polyurethane/ZnO composites

2013

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The properties of inorganic nanoparticles/polymer composites depend on the dispersivity of nanoparticles in a polymer matrix. The effect of surface modification on the dispersivity of ZnO nanoparticles in a polyurethane (PU) resin matrix was investigated. The nanocomposites were characterized by scanning electron microscopy (SEM), thermogravimetric analysis, and X‐ray diffraction. The scanning electron micrographs show that ZnO nanoparticles (CDI–SA–APS–ZnO), which were modified by aminopropyltriethoxysilane (APS) and activated stearic acid (SA) by N,N′‐carbonyldiimidazole (CDI), can be homogeneously dispersed and had been encapsulated in the PU phase. The interfacial compatibility between ZnO nanoparticles and PU matrix was significantly improved by hydrophobically modifying ZnO nanoparticles with APS and SA. The tensile strength and elongation at break of PU/CDI–SA–APS–ZnO nanocomposites increased by 82 and 64% respectively, compared with the pure PU material. The thermal stability and ultraviolet‐shielding properties were also improved by incorporating ZnO nanoparticles into the PU matrix. POLYM. COMPOS., 35:237–244, 2014. © 2013 Society of Plastics Engineers

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Preparation and surface modification of highly dispersed nano-ZnO with stearic acid activated by N,N′-carbonyldiimidazole

Cited by 17 publications

References 12 publications

Zinc Oxide—From Synthesis to Application: A Review

Zinc Oxide—From Synthesis to Application: A Review

The Effect of Different Coupling Agents on Nano-ZnO Materials Obtained via the Sol–Gel Process

Dispersivity of modified ZnO and characterization of polyurethane/ZnO composites

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