Organic–inorganic networks in foams from high internal phase emulsion polymerizations

Tai, Huiwen; Sergienko, Anatoly Y.; Silverstein, Michael S.

doi:10.1016/s0032-3861(00)00820-x

Cited by 117 publications

(66 citation statements)

References 7 publications

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“…This Table 5 Thermal analysis data of the pure acrylic resin and hybrid materials from TGA in N 2 and air atmosphere was due to the trapping of the polymer moieties in titania networks and exhibiting a better thermal stability [26]. The black color of the polymer residues after the TGA runs also provided the evidence for this conclusion.…”

Section: Thermal Stabilitymentioning

confidence: 85%

Sol–gel derived organic–inorganic hybrid from trialkoxysilane-capped acrylic resin and titania: effects of preparation conditions on the structure and properties

Xiong

Zhou

et al. 2004

Polymer

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Section: Thermal Stabilitymentioning

confidence: 85%

Sol–gel derived organic–inorganic hybrid from trialkoxysilane-capped acrylic resin and titania: effects of preparation conditions on the structure and properties

Xiong

Zhou

et al. 2004

Polymer

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“…Previous research on the development of polyHIPE bone grafts has focused on styrene-based or unsaturated polyester-based macromers. 11, 22, 25–26, 38–39 Although past styrene-based systems had excellent pore morphology, they were non-biodegradable which limited their use as tissue engineered scaffolds. Biodegradability was achieved by substituting in unsaturated polyesters; however, the macromers studied were often too viscous to form HIPEs without the use of a toxic diluent, such as toluene.…”

Section: Introductionmentioning

confidence: 99%

Injectable PolyHIPEs as High-Porosity Bone Grafts

et al. 2011

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Polymerization of high internal phase emulsions (polyHIPEs) is a relatively new method for the production of high porosity scaffolds. The tunable architecture of these polyHIPE foams make them attractive candidates for tissue engineered bone grafts. Previously studied polyHIPE systems require either toxic diluents or high cure temperatures which prohibit their use as an injectable bone graft. In contrast, we have developed an injectable polyHIPE that cures at physiological temperatures to a rigid, high-porosity foam. First, a biodegradable macromer, propylene fumarate dimethacrylate (PFDMA), was synthesized that has appropriate viscosity and hydrophobicity for emulsification. The process of surfactant selection is detailed with particular focus on the key structural features of both polymer (log P values, hydrogen bond acceptor sites) and surfactant (HLB values, hydrogen bond donor sites) that enable stable HIPE formation. Incubation of HIPEs at 37°C was used to initiate radical crosslinking of the unsaturated double bond of the methacrylate groups to polymerize the continuous phase and lock in the emulsion geometry. The resulting polyHIPEs exhibited ~75% porosity, pore sizes ranging from 4 to 29 μm, and an average compressive modulus and strength of 33 and 5 MPa, respectively. These findings highlight the great potential of these scaffolds as injectable, tissue engineered bone grafts.

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“…PSQs are a class of three-dimensional oligomeric organosiliceous compounds with the general structural formula (RSiO 1.5 ) n , where n is an even number and R can be any of a large number of groups (typically methyl, ethyl, vinyl, or phenyl) [12]. They have attracted much attention for their extraordinary heat and fire resistance, superior mechanical and electrical properties, and biocompatibility [13][14][15]. They have been applied in many fields, such as protective coatings [16], optical materials [17], aerospace materials [18], precursors in making ceramics [19], and flame-retardant agent [20].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of emulsifier-free trilayer core–shell polysilsesquioxane/polyacrylate/poly(fluorinated acrylate) hybrid latex particles

et al. 2012

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The trilayer core-shell polysilsesquioxane/polyacrylate/poly(fluorinated acrylate) (PSQ/PA/PFA) hybrid latex particles are successfully prepared, using functional PSQ latex particles with reactive methacryloxypropyl groups synthesized by the hydrolysis and polycondensation of (3-methacryloxypropyl)trimethoxysilane in the presence of a reactive emulsifier as seeds. Transmission electron microscopy (TEM), scanning electron microscopy (SEM) and dynamic light scattering (DLS) confirm that the resultant hybrid latex particles have evident trilayer core-shell structure and a narrow size distribution. The Fourier transform infrared (FTIR) spectra show that fluorinated acrylate monomers are effectively involved in the emulsion copolymerization and formed the fluorine-containing hybrid latex particles. XPS analysis of the obtained hybrid latex film reveals that the intensity of fluorine signal in the film-air interface is higher than that in the film-glass interface. In addition, compared with pure polyacrylate latex film, the obtained fluorine-containing hybrid film shows higher hydrophobicity and thermal stability, and lower surface free energy.

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Organic–inorganic networks in foams from high internal phase emulsion polymerizations

Cited by 117 publications

References 7 publications

Sol–gel derived organic–inorganic hybrid from trialkoxysilane-capped acrylic resin and titania: effects of preparation conditions on the structure and properties

Sol–gel derived organic–inorganic hybrid from trialkoxysilane-capped acrylic resin and titania: effects of preparation conditions on the structure and properties

Injectable PolyHIPEs as High-Porosity Bone Grafts

Synthesis and characterization of emulsifier-free trilayer core–shell polysilsesquioxane/polyacrylate/poly(fluorinated acrylate) hybrid latex particles

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