Kinetic investigations of hydrolysis and condensation of the glycidoxypropyltrimethoxysilane/aminopropyltriethoxy-silane system by means of FT-Raman spectroscopy I

Riegel, B.; Blittersdorf, Sabine; Kiefer, W.; Hofacker, S.; Müller, Martin; Schottner, G.

doi:10.1016/s0022-3093(97)00487-0

Cited by 154 publications

(102 citation statements)

References 8 publications

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“…No charge compensation (flood-gun) was used. The charge shift was corrected using the binding energy of carbon atoms bound to a hydroxyl group in cellulose, 18 as reference (Carbons ''1'' in Scheme 1). at 286.73 eV.…”

Section: X-ray Photoelectron Spectroscopymentioning

confidence: 99%

“…Investigation of hydrolysis and condensation reaction of organo-functional silanes have been the object of numerous interesting studies where different spectroscopic techniques such as FTIR, 17,18 Raman, 19 and NMR [20][21][22] have been used to tailor the multitude of the reactions liable to take place and to describe their evolution as a function of time. However, most of these reports have been concerned with g-glycidoxypropyl trimethoxysilane (GPS), g-aminopropyl triethoxysilane (APS), and g-methacryloxypropyl trimethoxysilane (MPS).…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of silane onto cellulose fibers. II. The effect of pH on silane hydrolysis, condensation, and adsorption behavior

Belhassen¹,

Boufi²,

Salon³

et al. 2008

J of Applied Polymer Sci

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The hydrolysis of four alkoxysilane agents, g-methacryloxypropyl trimethoxysilane (MPS), g-mercaptopropyl trimetoxysilane (MRPS), octyl trimethoxysilane OS), and N-phenyl-g-aminopropyl trimethoxysilane (PAPS), was carried out in an ethanol/water (80/20) solution under both acid and basic conditions. 1 H, 13 C, and 29 Si NMR spectroscopy were used to provide quantitative analyses of the structural components during hydrolysis and condensation reaction. The analysis revealed that the acidcatalyzed hydrolysis of silane allows the formation of high amount of silanol groups, reduced the selfcondensation reaction among silanol groups and stabilized the proportion of intermediary hydrolyzed species for several days. However, under basic condition, condensation reactions proceed as soon as the hydrolysis reaction started leading to the rapid consumption of silanol groups through selfcondensation and to the growth of three-dimensional high molecular structures. The interaction of MPS and MRPS with cellulose fibers and the evolution of their surface properties were then investigated using adsorption isotherms and contact angle measurement.

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Section: X-ray Photoelectron Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adsorption of silane onto cellulose fibers. II. The effect of pH on silane hydrolysis, condensation, and adsorption behavior

Belhassen¹,

Boufi²,

Salon³

et al. 2008

J of Applied Polymer Sci

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“…32), 33) An important role in the synthesis is also played by water and the solvent; on the other hand water and ethanol are also by-products of the GPTMS solgel reactions. A large variety of catalysts have been used for the opening of the epoxy groups, acid 16) and basic 19), 34) catalysts, photocatalysts. 35) 1-methylimidazole 19) (MI) and (£-aminopropyl)triethoxysilane (APTES) 36) are examples of basic catalysts, while Lewis acids, such as titanium, 37) zirconium 38) and aluminium alkoxides 39) are the most common acid catalysts.…”

Section: A Short Overview Of the Chemistry Of Gptmsmentioning

confidence: 99%

Crystallization in hybrid organic-inorganic materials through self-organization from 3-glycidoxypropyltrimethoxysilane

Innocenzi

Figus

Kidchob

et al. 2011

J. Ceram. Soc. Japan

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Hybrid organicinorganic materials can organize into layered crystalline structures through self-organization when bridged silsesquioxanes are used in the solgel synthesis. Crystallization is, however, also observed in hybrid materials when 3-glycidoxypropyltrimethoxysilane is left to react in highly basic conditions; this synthesis route shows a peculiar property which is the possibility of preparing also crystalline hybrid films by controlling the solgel process. The crystalline films exhibit optical anisotropy and are optically transparent. In this article we briefly review the main achievements of our research group in the field.

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“…The high organic content required higher water content in order to accomplish both hydrolysis and ring opening. Hydrolysis was more dependent on the pH than the condensation reaction [6] and at lower pH values was much faster than condensation [7]. The hydrolysis rate increases sharply as the molar ratio of water to alkoxide is increased [7][8][9].…”

Section: Introductionmentioning

confidence: 96%

Hybrid sol–gel coating agents based on zirconium(IV) propoxide and epoxysilane

Milošev

Kapun

Rodič

et al. 2015

J Sol-Gel Sci Technol

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The hybrid sol-gel was synthesized as a basis for preparing coatings for use as anticorrosion and antibacterial protectants of medical implants. Coatings were prepared using (3-glycidyloxypropyl)trimethoxysilane and zirconium(IV) propoxide as precursors, with acetic acid as a catalyst. The synthesis was followed using in situ Fourier transform infrared spectroscopy. Specific steps of the synthesis were followed by 1 H nuclear magnetic resonance spectroscopy. The reactions of zirconium(IV) propoxide and (3-glycidyloxypropyl)trimethoxysilane with acetic acid differed; acetate was formed only in the reaction between zirconium(IV) propoxide and acetic acid. The reaction of the opening of the epoxy ring of GPTMS was followed, during both synthesis and curing, at room temperature and at 150°C. The opening of epoxy ring was catalysed thermally. The thermal stability of the prepared sol was determined by thermogravimetric analysis. Graphical AbstractKeywords Hybrid sol-gel coating Á Zirconium(IV) propoxide Á (3-glycidyloxypropyl)trimethoxysilane (GPTMS) Á FTIR Á NMR Ingrid Milošev and Barbara Kapun shares equally the first authorship.

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Kinetic investigations of hydrolysis and condensation of the glycidoxypropyltrimethoxysilane/aminopropyltriethoxy-silane system by means of FT-Raman spectroscopy I

Cited by 154 publications

References 8 publications

Adsorption of silane onto cellulose fibers. II. The effect of pH on silane hydrolysis, condensation, and adsorption behavior

Adsorption of silane onto cellulose fibers. II. The effect of pH on silane hydrolysis, condensation, and adsorption behavior

Crystallization in hybrid organic-inorganic materials through self-organization from 3-glycidoxypropyltrimethoxysilane

Hybrid sol–gel coating agents based on zirconium(IV) propoxide and epoxysilane

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