Organic–inorganic hybrids derived from 2-hydroxyethylmethacrylate and (3-methacryloyloxypropyl)trimethoxysilane

Habsuda, Jana; Simon, George P; Cheng, Yi‐Bing; Hewitt, David G.; Lewis, David A.; Toh, H. K.

doi:10.1016/s0032-3861(02)00209-4

Cited by 37 publications

(20 citation statements)

References 18 publications

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“…DMA and SAXS have been combined in order to investigate the presence of the heterogeneities inside the matrix, in accordance with earlier publications [28,56,57]. Storage modulus, E 0 , and the loss modulus, E 00 , curves for the prepared films can be seen in Figs.…”

Section: Dynamical Mechanical Analysis Dmamentioning

confidence: 77%

Studies on the structural heterogeneities of poly(dimethylsiloxane) networks modified with poly(phenylsilsesquioxane)s using small-angle X-ray scattering and dynamical mechanical analysis

Prado

Yoshida

2009

Journal of Non-Crystalline Solids

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Section: Dynamical Mechanical Analysis Dmamentioning

confidence: 77%

Studies on the structural heterogeneities of poly(dimethylsiloxane) networks modified with poly(phenylsilsesquioxane)s using small-angle X-ray scattering and dynamical mechanical analysis

Prado

Yoshida

2009

Journal of Non-Crystalline Solids

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“…The GA acts as a chemical crosslinking agent by forming acetal bridges between polymer chains [7][8][9]. The GA acts as a chemical crosslinking agent by forming acetal bridges between polymer chains [7][8][9].…”

Section: Discussionmentioning

confidence: 99%

Small Angle X-Ray Scattering, FTIR and SEM Characterization of Nanostructured PVA/TEOS Hybrids by Chemical Crosslinking

Mansur

2005

MRS Proc.

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In the present work, novel hybrid nanostructured composites were produced to be used in many potential applications such as biomedical, drug delivery systems, tri-dimensional scaffolds for biomaterials and tissue engineering, biomembranes and optical devices among others. Hybrids were synthesized by reacting poly (vinyl alcohol) (PVA) in aqueous acid solution with silicon alcoxide tetraethoxysilane (TEOS). PVA/TEOS hybrids were also modified in the nanometer-scale by crosslinking with glutaraldehyde (GA) during the synthesis involving hydrolysis and policondensation of PVA/TEOS. The hybrids were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Small Angle X-ray Scattering (SAXS) and Scanning Electron Microscopy (SEM). FTIR spectra have shown major vibration bands associated with organic-inorganic chemical groups present in the hybrid composite PVA/TEOS. Also, typical absorption bands related to glutaraldehyde alkyl chain have indicated the crosslinking reaction of the hybrid network with glutaraldehyde (PVA/TEOS/GA). SAXS results have indicated different nano-ordered disperse phases for PVA, PVA/TEOS hybrid and PVA/TEOS/GA chemically crosslinked hybrid. SEM micrographs have shown morphology difference between PVA and PVA hybrid samples. EXPERIMENTAL PVA/TEOS/GA Hybrids SynthesisTEOS (Si(OC 2 H 5 ) 4 > 98%) and GA (25% aqueous) were supplied by Sigma-Aldrich. PVA (CPQ, Brazil) was obtained as a 90+ % hydrolyzed powder with a reported average K1.9.1 Mater. Res. Soc. Symp. Proc. Vol. 873E

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“…The existence of OH --1 group in the sol-gel coating (due to condensation processes) leads to formation of strong cross-linked bonds between the sol-gel coating and the metal surface [14]. These bonds increase in cross-linking during the high temperature curing process [15] which would significantly reflect on the superior adhesion of this type of coating with metal substrates. In addition the silanol groups (Si-OH) within silica sol gel coating forms a strong covalent bond with the aluminium substrates (Si-O-Al) [16,17].…”

Section: Mechanical Characterizationmentioning

confidence: 99%

Effects of TiO<sub>2</sub>/SiO<sub>2</sub> Reinforced Nanoparticles on the Mechanical Properties of Green Hybrid Coating

Gobara¹

2015

ILCPA

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Titanium and silica oxides nanoparticles were introduced into hybrid silica sol-gel/epoxy coating to enhance the mechanical properties of coatings. Titanium dioxide (TiO 2 ) and silica oxide (SiO 2 ) were chemically synthesised before adding to the prepared silica sol gel coating. X-ray diffraction (XRD), Energy-dispersive x-ray analysis (EDX) and Transmission Electron microscope (TEM) were used to characterize the prepared nanoparticles. The coating was then applied to 3003 aluminium alloy (AA3003) surface. The adhesion performance of different sol gel coating compositions was investigated using shear test to define the influence of nanoparticles on adhesive strength of the coating. The Rockwell C hardness test was used to study the micro-hardness of different compositions of sol gel coating. Also, contact angel was used to investigate the hydrophobicity of the coatings. The results showed that there was a significant improvement of the adhesion performance of hybrid silica sol gel coating due to addition of TiO 2 and the hydrophobicity of sol gel coating was increased due to addition of SiO 2 nanoparticles.

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Organic–inorganic hybrids derived from 2-hydroxyethylmethacrylate and (3-methacryloyloxypropyl)trimethoxysilane

Cited by 37 publications

References 18 publications

Studies on the structural heterogeneities of poly(dimethylsiloxane) networks modified with poly(phenylsilsesquioxane)s using small-angle X-ray scattering and dynamical mechanical analysis

Studies on the structural heterogeneities of poly(dimethylsiloxane) networks modified with poly(phenylsilsesquioxane)s using small-angle X-ray scattering and dynamical mechanical analysis

Small Angle X-Ray Scattering, FTIR and SEM Characterization of Nanostructured PVA/TEOS Hybrids by Chemical Crosslinking

Effects of TiO<sub>2</sub>/SiO<sub>2</sub> Reinforced Nanoparticles on the Mechanical Properties of Green Hybrid Coating

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