Structure of silane coupling agents adsorbed on silicon powder

Culler, S. R.; Ishida, Hatsuo; Koenig, Jack L.

doi:10.1016/s0021-9797(85)80007-2

Cited by 118 publications

(55 citation statements)

References 20 publications

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“…However, in our case the reactions were performed under nitrogen and subsequently dried under nitrogen. Culler et al [17] have attributed this peak to the formation of a hydrogen-bonded coupling structure, formed between the Al-OH groups of the surface and/or with free silanol groups (Si-OH) and the amine groups of the coupling agent. Therefore, the presence of this band might indicate the presence of hydrogen bonded species.…”

Section: Characterization Methodsmentioning

confidence: 99%

“…Besides this hydrogen bonding or ionic interaction with surface OH groups, a reaction with other silane molecules is also a possible path [16]. Consequently, the morphology and structure of the aminosilane-modified surface strongly depends on (1) reaction conditions [16][17][18][19][20][21][22][23][24][25][26] (e.g. concentration, reaction temperature, type of solvent, reaction time, phase of reaction, surface water or humidity) (2) silane nature (number of reactive groups, size) [23,24,27], (3) curing conditions [16,28] and (4) the properties of the inorganic support (pore size, [OH]).…”

Section: Introductionmentioning

confidence: 99%

“…Because no solvents are used in the gas or vapour phase deposition method, the presence of water can be excluded. Still modification of metal oxides with different kinds of organosilanes is mostly performed by solution phase methods [4][5][6][7][16][17][18][19][20][21][22][23]27,28]. In literature some studies are reported on gas-solid reactions of silanes onto metal oxide surfaces [22,24,25].…”

Section: Introductionmentioning

confidence: 99%

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Chemical modification/grafting of mesoporous alumina with polydimethylsiloxane (PDMS)

et al. 2015

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A method for polydimethylsiloxane grafting of alumina powders is described which involves chemical modification of the surface of mesoporous (5 nm) γ-alumina flakes with a linker (3-aminopropyltriethoxysilane: APTES), either by a solution phase (SPD) or a vapour phase (VPD) reaction, followed by PDMS grafting. The systems were analysed by FTIR, gas adsorption/desorption and TGA. Grafting is proven by FTIR for all cases, meaning that a covalent bond exists between inorganic particle and organic moiety. It is demonstrated that the way of applying APTES (by SPD or VPD) has an effect on the morphology of linker as well as of PDMS. A more controlled grafting of the APTES linker on γ-alumina is possible by the VPD method, resulting in efficient grafting and good infiltration of PDMS in the pores of the inorganic system. Stability tests on these PDMS grafted alumina show no degradation after 14 days soaking in a wide range of solvents. Surface modification of metal oxide particles by organic moieties via a chemical reaction can adapt its interfacial properties and renders a high chemical stability of these inorganic-organic hybrids. This validates the use of these materials under severe applications like in membranes for solvent nanofiltration or for protein immobilization and resin modification in e.g. chromatographic applications.

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Section: Characterization Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Chemical modification/grafting of mesoporous alumina with polydimethylsiloxane (PDMS)

et al. 2015

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“…Este agente de acoplamiento (γ-APS) ha sido ampliamente estudiado en materiales compuestos de matriz orgánica reforzados con fibras (19)(20)(21)(22).…”

Section: Introductionunclassified

Reacción del Î³-aminopropiltrietoxisilano (Î³-APS) con partículas de pizarra

Rodriguez¹,

Rubio²,

Rubio³

et al. 2001

Bol. Soc. Esp. Ceram. Vidr.

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Reacción del γ γ-aminopropiltrietoxisilano (γ γ-APS) con partículas de pizarra Los agentes de acoplamiento silanos son frecuentemente utilizados para modificar superficies de fibras o partículas utilizadas como refuerzo en composites de matriz orgánica. Para comprobar la formación de enlaces resistentes entre los agentes de acoplamiento y las partículas inorgánicas se han empleado muchos métodos experimentales. En este trabajo se ha utilizado la espectroscopía infrarroja por transformadas de Fourier (FT-IR), el análisis térmico diferencial y termogravimétrico (ATD-TG) y el análisis de la superficie específica como métodos para estudiar la reacción del agente de acoplamiento γ-aminopropiltrietoxisilano (γ-APS) con partículas de pizarra y poder conocer la modificación que ha sufrido la superficie después del tratamiento.Palabras clave: Pizarra, γ-aminopropiltrietoxisilano, Interacción. Study of the reaction of γ γ-aminopropyltriethoxy silane with slate particlesSilane Coupling Agents (SCA) are widely used in fibers or particulates reinforced polymer composites to provide a water resistant bond between these reinforcements and the polymer martix. Many methods have been employed to study the interaction of SCA with inorganic surfaces in order to understand if a covalent bonding at the particulates and silane interface exists. In this work it has been used Fourier Transform infrared (FT-IR) spectroscopy, differential thermal analysis (DTA-TG) and specific surface área analysis in order to study the reaction of γ-aminopropiltrietoxisilane (γ-APS) with slate particulates and to know the surfaces changes occurring after treatment.

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“…These theories have been discussed chiefly in terms of molecular structures of silane coupling agents at the surface of glass or inorganic particles (4)(5)(6)(7)(8).…”

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confidence: 99%

Studies on interfacial effect on fracture of fibers in composites. (Part 1). Effect of silane treatment on fracture process of glass fiber in single filament coupon test.

Ikuta

Hamada

Nishio³

et al. 1991

Sen-i Gakkaishi

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Single filament coupon test was employed for investigating the mechanical properties of the interface between glass fiber and matrix in glass fiber-reinforced plastics. Particularly, interfacial effect on the fracture process accompanied by the tensile stress of the coupon was examined. The glass filament sur face was treated with toluene solution containing various amounts of silane coupling agent, y anilinopropyltrimethoxysilane, in order to reinforce the glass-matrix interface. The fracture process was observed by applying tensile load to the coupon. The mean fragment length measured for every coupon de creased with increasing tensile stress and finally reached a value related to critical fiber length. The silane treatment apparently gave no effects on the critical value while promoted the progressive fragmentation.The fracture process was also examined by use of the variation coefficient of fracture length and the frac ture positions along the filament axis. The fracture was apt to occur near the edge of a broken filament on fracture process in every case of the filaments with interfacial reinforcement. This phenomenon was inter preted in terms of the complicated stress distribution involving the stress concentration which may be generated near the fracture position by the reinforced interface.

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Structure of silane coupling agents adsorbed on silicon powder

Cited by 118 publications

References 20 publications

Chemical modification/grafting of mesoporous alumina with polydimethylsiloxane (PDMS)

Chemical modification/grafting of mesoporous alumina with polydimethylsiloxane (PDMS)

Reacción del Î³-aminopropiltrietoxisilano (Î³-APS) con partículas de pizarra

Studies on interfacial effect on fracture of fibers in composites. (Part 1). Effect of silane treatment on fracture process of glass fiber in single filament coupon test.

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