Nanoindentation and nanoscratch profiles of hybrid films based on (γ-methacrylpropyl)trimethoxysilane and tetraethoxysilane

Zhang, Xingwen; Hu, Lijiang; Sun, Dezhi

doi:10.1016/j.actamat.2006.06.057

Cited by 64 publications

(38 citation statements)

References 39 publications

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“…[1][2][3] Moreover, the knowledge of mechanical properties such as Young's modulus and hardness (H) at nanolevel could be crucial for the selection, design, and application of membrane materials. [4][5][6] Therefore, investigation on the mechanical properties, interfacial adhesion, and bonding mechanisms of film/support has attracted a great deal of attention in the past decades.…”

Section: Introductionmentioning

confidence: 99%

Interfacial adhesion between polymer separation layer and ceramic support for composite membrane

et al. 2009

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An in situ characterization method for mechanical and adhesive properties of organic/ceramic composite membranes is built on the basis of nanoindentation technique in this work. The polydimethylsiloxane (PDMS) was used as the separation layer with the support of porous ZrO 2 /Al 2 O 3 ceramic tubes. The effects of roughness of the ceramic support and the viscosity of PDMS solution on the mechanical properties of the PDMS separation layer and the interfacial adhesion at the interface were investigated in detail. It was found that when the roughness of the ceramic support increased and the viscosity of PDMS solution decreased, the interfacial adhesion strength of PDMS/ceramic composite membrane increased, but these two variables had little effect on the mechanical properties of the PDMS separation layer. Our results indicate that the mechanical interlocking dominates the adhesion between the PDMS separation layer and the porous ceramic support. V

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Section: Introductionmentioning

confidence: 99%

Interfacial adhesion between polymer separation layer and ceramic support for composite membrane

et al. 2009

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“…However, many other types of modifiers such as silica precursors can also be used for this purpose. It has been reported that modification of thermosetting polymers with polyhedral oligomeric silsesquioxanes (POSS), or silsesquioxanes and functionalized silica sols, increases the mechanical and thermal properties of the cross-linked polymer and the residual mass after degradation at high temperatures [10][11][12][13][14][15]. Silsesquioxanes (or polysilsesquioxanes) are the condensation products of organotrialkoxysilanes [10,[16][17][18], while functionalized silica sols are obtained by the co-condensation of organotrialkoxysilanes with a silica precursor such as tetraethoxysilane (TEOS) [12,13].…”

Section: Introductionmentioning

confidence: 99%

Modification of a Phenolic Resin with Epoxy- and Methacrylate-Functionalized Silica Sols to Improve the Ablation Resistance of Their Glass Fiber-Reinforced Composites

Geng

You

et al. 2014

Polymers

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Functionalized silica sols were obtained by the hydrolytic condensation of (γ-methacryloxypropyl)trimethoxysilane (MPMS), (γ-glycidyloxypropyl)trimethoxysilane (GPMS) and tetraethoxysilane (TEOS). Three different sols were obtained: MPS (derived from MPMS and TEOS), GPS-MPS (derived from GPMS, MPMS and TEOS), and GPSD (derived from GPMS, TEOS and diglycidyl ether of bisphenol A, DGEBA). These silica sols were mixed with a phenolic resin (PR). Ethylenediamine was used as a hardener for epoxy-functionalized sols and benzoyl peroxide was used as an initiator of the free-radical polymerization of methacrylate-functionalized silica sols. Glass fiber-reinforced composites were obtained from the neat PR and MPS-PR, GPS-MPS-PR and GPSD-PR. The resulting composites were evaluated as ablation resistant materials in an acetylene-oxygen flame. A large increase in the ablation resistance was observed when the PR was modified by the functionalized silica sols. The ablation resistance of the composites decreased as follows: GPSD-PR > MPS-PR > GPS-MPS-PR > PR.

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“…Silsesquioxane (SSO) compounds have an important role in applications requiring thin film [1][2][3]. Due to their nanostructure and superior properties, these attractive engineering materials provide new strategies to incorporate and release corrosion inhibitors, allowing toxic and hazardous hexavalent chromium-containing compounds to be replaced [4].…”

Section: Introductionmentioning

confidence: 99%

Enhancement Corrosion Resistance of (γ-Glycidyloxypropyl)-Silsesquioxane-Titanium Dioxide Films and Its Validation by Gas Molecule Diffusion Coefficients Using Molecular Dynamics (MD) Simulation

et al. 2014

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Based on silsesquioxanes (SSO) derived from the hydrolytic condensation of (γ-glycidyloxypropyl)trimethoxysilane (GPMS) and titanium tetrabutoxide (TTB), hybrid films on aluminum alloy (AA), film-GPMS-SSO (f-GS) and f-GS-TTB i% (f-GSTT 5%-25% , i = 5, 10, 15, 20 and 25 wt%), were prepared and tested by electrochemical measurements with typical potentiodynamic polarization curves. The I corr values of the samples were significantly lower, comparing with the I corr values of the f-GS, AA and f-GS modified tetraethoxysilane (TEOS) in the previous study, which implies that the TTB 5%-25% (TiO 2 ) additions in the coatings indeed enhance the electrochemical corrosion resistance. Correlations between the film structures and anticorrosion properties were discussed. To validate the corresponding anticorrosion experiment results, different 3D-amorphous cubic unit cells were employed as models to investigate the self-diffusion coefficient (SDC) for SO 2 , NO 2 and H 2 O molecules by molecular dynamics (MD) simulation. All of the SDCs calculated for SO 2 , NO 2 and H 2 O diffusing in f-GSTT 5%-25% cells were less than the SDCs in f-GS. These results validated the corresponding anticorrosion experiment results. OPEN ACCESSPolymers 2014, 6 301

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Nanoindentation and nanoscratch profiles of hybrid films based on (γ-methacrylpropyl)trimethoxysilane and tetraethoxysilane

Cited by 64 publications

References 39 publications

Interfacial adhesion between polymer separation layer and ceramic support for composite membrane

Interfacial adhesion between polymer separation layer and ceramic support for composite membrane

Modification of a Phenolic Resin with Epoxy- and Methacrylate-Functionalized Silica Sols to Improve the Ablation Resistance of Their Glass Fiber-Reinforced Composites

Enhancement Corrosion Resistance of (γ-Glycidyloxypropyl)-Silsesquioxane-Titanium Dioxide Films and Its Validation by Gas Molecule Diffusion Coefficients Using Molecular Dynamics (MD) Simulation

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