Role of trialkoxysilane functionalization in the preparation of organic-inorganic composites

Coltrain, Bradley K.; Landry, Christine J. T.; O’Reilly, James M.; Chamberlain, Alexandra M.; Rakes, Gary A.; Sedita, Joseph S.; Kelts, Larry W.; Landry, Michael R.; Long, Victoria K.

doi:10.1021/cm00034a014

Cited by 88 publications

(66 citation statements)

References 4 publications

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“…When PMMA is combined with inorganic materials such as SiO 2 , TiO 2 or zirconium oxide (ZrO 2 ) at the nanometer level, the resulting hybrid materials have high strength and thermal stability. 22,23 In studies of PMMA/inorganic oxide materials, the inorganic network in hybrid materials is generally prepared from metal alkoxides [24][25][26] or colloidal inorganic nanoparticles. [27][28][29][30] There are many reports that base the preparation of PMMA/SiO 2 hybrid materials on unfunctionalized and trialkoxysilyl-functionalized acrylic polymers using an in situ sol-gel process in the presence of tetraethoxysilane (TEOS) or Ti(OBu) 4 .…”

Section: Introductionmentioning

confidence: 99%

“…In this case, the polymerization of monomers and the hydrolysis and condensation of TEOS occur simultaneously. [24][25][26][31][32][33] On the other hand, the colloidal silica approach provides the advantage of precise control on size distribution in hybrid materials. Colloidal silica with a particle size of o100 nm is required to avoid light diffraction.…”

Section: Introductionmentioning

confidence: 99%

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Poly(methyl methacrylate) (PMMA)-based hybrid materials with reactive zirconium oxide nanocrystals

Ôtsuka

Chujo

2010

Polym J

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Highly transparent and homogeneous hybrids containing a single nano-sized inorganic oxide domain were synthesized from poly(methyl methacrylate) (PMMA) and aqueous dispersed zirconium oxide nanocrystals (ZrO 2 -NCs) in the presence of a coupling agent, 3-(methacryloxy)propyl-trimethoxysilane (MPTS), which was grafted onto the surface of ZrO 2 -NCs by zirconium hydroxide (Zr-OH) surface groups. The surface-functionalized ZrO 2 -NCs were used as macromonomers in the process of grafting from polymerization of methyl methacrylate (MMA). The densities of surface Zr-OH groups and MPTS surface modifications were determined using thermogravimetric analysis. Fourier transform infrared analysis indicated successful bonding between organic and inorganic moieties. The morphology of the obtained hybrid films was investigated by scanning electron microscopy and tapping-mode atomic force microscopy. Hybrid films possess interesting thermal stability and optical transparency characteristics because of the uniform incorporation of networks between organic polymer chains and inorganic nanocrystals.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Poly(methyl methacrylate) (PMMA)-based hybrid materials with reactive zirconium oxide nanocrystals

Ôtsuka

Chujo

2010

Polym J

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“…These properties are associated with σ conjugation [13]. Many researchers have demonstrated that monolithic, transparent hybrid materials without macroscopic phase separation can be prepared by properly controlling the conditions of hydrolysis and condensation of sol-gel materials such as tetraethoxysilane (TEOS) or tetramethoxysilane (TMOS) [14][15][16]. Organic and inorganic constituents can be chemically bonded or just physi-cally mixed in these hybrid materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and thermal properties of inorganic-organic hybrid

Da¹,

Zhang²,

Wu³

et al. 2007

Express Polym. Lett.

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Abstract. Poly (St-MAn-APTES)/silica hybrid materials were successfully prepared from styrene (St), maleic anhydride (MAn) and tetraethoxysilane (TEOS) in the presence of a coupling agent 3-aminopropyltriethoxysilane (APTES), by freeradical solution polymerization and in situ sol-gel process. The TEOS content varied from 0 to 25 wt%. Fourier transform infrared spectroscopy and 29 Si nuclear magnetic resonance spectroscopy were used to characterize the structure of the hybrids (condensed siloxane bonds designated as Q 1 , Q 2 , Q 3 , Q 4 , with 3-aminopropyltriethoxysilane having mono-, di-, tri, tetra-substituted siloxane bonds designated as T 1 , T 2 and T 3 ). The results revealed that Q 3 , Q 4 and T 3 were the major microstructure elements in forming a network structure. The hybrid materials were also characterized by the methods of solvent extraction, Transmission Electron Microscopy (TEM), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) for determining the gel contents, particle size and thermal performance. The results showed that gel contents in the hybrid materials were much higher, the SiO2 phase were well dispersed in the polymer matrix, silicon dioxide existed at nanoscale in the composites, which had excellent thermal stability.

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“…This provides a possibility of control over parameterization of the surface. For example, in [282,283] morphology of two types of nanocomposites is compared: A (30 wt % SiO 2 ) obtained by block polymerization of HEMA, preliminary functioned with silicon dioxide particles (~13 nm) and B based on synthesized in situ SiO 2 (as a result of hydrolysis of TEOS hydrolysis) during radical HEMA polymerization.…”

Section: Morphology and Fractal Models Of Hybrid Nanocompositesmentioning

confidence: 99%

Physics and Chemistry of Sol-Gel Nanocomposites Formation

Pomogailo

Джардималиева

2014

Nanostructured Materials Preparation via Condensation Ways

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This method called sol-gel or dip-and spin-on-glass process, spin-spray-coating, sol -gel glasses, which was widely used in the second half of the twentieth century [1] 1 is one of the most universal condensation ways of production of nanoparticles stabilized by inorganic oxide or polymeric matrices. A special interest is attracted to materials obtained by combination of sol-gel chemistry and aerosol or spray processes, and combination of sol-gel synthesis with intercalation. This also includes combinations of sol-gel processes with different types of thermolysis, and approaches met in nature in biomineralization processes, etc., which are new aspects of integrative chemistry approach. Traditional sol-gel concept is based on hydrolysis and condensation of metal alkoxides and many metalloids including different ways of their modification [2,3]. Main reactions proceed at relatively low temperatures with usage of prepared in advance or synthesized in parallel polymers, and are convenient techniques for preparation of organic-inorganic nanocomposites compared with commercial silicate-intercalation technique. Sizes of formed nanoparticles in a composite can be reduced to 10 nm by choice of relative conditions. Polymer-inorganic materials have high mechanical strength and thermal stability in combination with optimal heat transport properties. They are widely used in practice due to unique physical and chemical properties: incorporation of nanometric inorganic component into polymeric matrix improves mechanical properties of material [4][5][6][7], permeability of polymers [8]. Light-sensitive materials are used in optic and electronic industry, printed-circuit boards, photoconductive cells, as key elements in solid coatings, packing materials, as cover materials they have good transparency [9][10][11]. For example, sol-gel method was used to produce various polymer/TiO 2 composites with high refractive index [12]. Such type of composites are used for chromatographic carriers, membrane materials, these are the main class of plastics for different applications, including airspace. Controlled properties of the surface of these colloid 1 We refer here to the recent review devoted to celebration of 40th anniversary of innovation researches in polymer-inorganic ceramics produced by sol-gel technique [1].

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Role of trialkoxysilane functionalization in the preparation of organic-inorganic composites

Cited by 88 publications

References 4 publications

Poly(methyl methacrylate) (PMMA)-based hybrid materials with reactive zirconium oxide nanocrystals

Poly(methyl methacrylate) (PMMA)-based hybrid materials with reactive zirconium oxide nanocrystals

Synthesis, characterization and thermal properties of inorganic-organic hybrid

Physics and Chemistry of Sol-Gel Nanocomposites Formation

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