Characterization of poly(2-hydroxyethyl methacrylate-silica) hybrid materials with different silica contents

Li, Shuxi; Shah, Anup; Hsieh, Alex J.; Haghighat, R. Ross; Praveen, Solomon; Mukherjee, Indraneil; Wei, Elizabeth; Zhang, Zongtao; Wei, Yen

doi:10.1016/j.polymer.2007.05.025

Cited by 37 publications

(31 citation statements)

References 26 publications

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“…This lack of observable transition in the poly(HEMA-BisSi) samples is most likely attributable to the influence of the crosslinking that occurs via crosspolymerization of the growing PBisSi polymer chains with HEMA pendant groups on the silica structure formed by the condensation of PHEMA with the silica. Costa R. [15] and Li S. [8] reported effect over the behavior the hybrids materials in DSC similar to this results. …”

Section: Dscsupporting

confidence: 83%

“…The transparent solutions were finally dried for 12 h in an oven at 80°C to complete the polymerization. The resulting xerogels (powders) formed were comminuted in an agate mortar for subsequent analysis [8].…”

Section: Methodsmentioning

confidence: 99%

“…It is interesting to study how the thermal stability of PHEMA of is affected by incorporating BisSi (bis-[trimethoxysilylpropyl] amine). It is interesting choice because its hydroxyl groups, in addition to forming hydrogen bonds will eventually form Si-O-C by condensation with silanol groups [8,9,15]. Consequently, design of efficient response active materials that are also thermally stable has been a long sought after goal [10].…”

Section: Thermal Behavior Of Poly(2-hydroxyethyl Methacrylate-bis-[trmentioning

confidence: 99%

“…One strategies involves the simultaneous growth of the inorganic phase via acid hydrolysis and condensation of alkoxysilane precursor and the polymer phase via free radical polymerization of vinyl monomer in a common solvent [8]. In this study, we report the thermal properties of poly(2-hydroxiethyl methacrylate-bis[trimethoxysilylpropyl]amine) networks.…”

Section: Thermal Behavior Of Poly(2-hydroxyethyl Methacrylate-bis-[trmentioning

confidence: 99%

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Thermal behavior of poly(2-hydroxyethyl methacrylate-bis-[trimethoxysilylpropyl]amine) networks

Figueroa¹,

Delgado²,

Hernández³

et al. 2013

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Poly(HEMA-BisSi) networks were prepared by using acid-catalyzed sol-gel of bis-[trimethoxysilylpropyl]amine (BisSi) and free radical polymerization of 2-hydroxyethyl methacrylate (HEMA). The thermal properties of the poly(HEMA -BisSi) networks were investigated with differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The thermal behavior of these networks was also compared with homopolymers (The networks formed in both PHEMA and PBisSi gels were identified). The glass transition temperature (T g ) of PHEMA homopolymer was found as 103.74 °C. The thermal degradation of the poly(HEMA-BisSi) networks with different silica contents (e.g. 10, 15 and 25 wt%) were evaluated with use of DTG. It was observed that the thermal degradation temperature of poly(HEMA-BisSi) networks changed much with the BisSi content.

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Section: Dscsupporting

confidence: 83%

Section: Methodsmentioning

confidence: 99%

Section: Thermal Behavior Of Poly(2-hydroxyethyl Methacrylate-bis-[trmentioning

confidence: 99%

Section: Thermal Behavior Of Poly(2-hydroxyethyl Methacrylate-bis-[trmentioning

confidence: 99%

See 2 more Smart Citations

Thermal behavior of poly(2-hydroxyethyl methacrylate-bis-[trimethoxysilylpropyl]amine) networks

Figueroa¹,

Delgado²,

Hernández³

et al. 2013

IOP Conf. Ser.: Mater. Sci. Eng.

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“…18,19,20 Previous methods for preparing poly(2-hydroxyethyl methacrylate) nanocomposite layers have included sol-gel reaction, 2,19,20 free radical polymerization, 22 photopolymerization, 23,24 emulsion polymerization, 25,26 controlled radical polymerization, 27,28 in-situ reduction 29,30 and solution intercalation. 31 Such wet chemical approaches tend to require catalysts, 27 high temperatures, 20 multiple steps, 2 or long reaction times. 19 Plasmachemical deposition of functional thin films is recognized as being a single-step, solventless, ambient temperature technique, which provides conformal coatings.…”

Section: Introductionmentioning

confidence: 99%

Super-Adhesive Polymer–Silica Nanocomposite Layers

Wood

Ward

Badyal

2013

ACS Appl. Mater. Interfaces

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The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. This significant enhancement in interfacial adhesion arises due to the silica nanoparticle surface methacryloyl groups enhancing crosslinking throughout the nanocomposite layer.

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Synthesis and Fabrication of Multifunctional Nanocomposites: Stable Dispersions of Nanoparticles Tethered with Short, Dense and Polydisperse Polymer Brushes in Poly(methyl methacrylate)

Wong

Guenther

Sun

et al. 2012

Adv Funct Materials

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This paper presents a melt‐processable multifunctional nanocomposite material that shows highly controlled tunability in refractive index, glass transition temperature (Tg) and energy bandgap. ZnO quantum dots tethered with polymer brushes are melt‐blended into the matrix polymer, giving rise to multiple functionalities in the nanocomposites. Brush–matrix polymer interactions are important in determining the ability of polymer‐grafted nanoparticles to disperse in a polymer melt, of which graft density (σ), brush (N) and matrix (P) polymer lengths are the critical parameters. It is generally assumed that long polymer brushes (N > P) and an optimum graft density are necessary to achieve a good dispersion. Here it is demonstrated that nanoparticles tethered with short, dense and polydisperse polymer brushes via radical copolymerization can exhibit a stable, fine dispersion in the polymer melt. The quality of the dispersion of the nanoparticles is characterized by measuring physical properties that are sensitive to the state of the dispersion. This synthesis method presents a general approach for the inexpensive and high‐throughput fabrication of high quality, melt‐blendable nanocomposites that incorporate functional nanoparticles, paving the way for wider application of high performance nanocomposites.

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Characterization of poly(2-hydroxyethyl methacrylate-silica) hybrid materials with different silica contents

Cited by 37 publications

References 26 publications

Thermal behavior of poly(2-hydroxyethyl methacrylate-bis-[trimethoxysilylpropyl]amine) networks

Thermal behavior of poly(2-hydroxyethyl methacrylate-bis-[trimethoxysilylpropyl]amine) networks

Super-Adhesive Polymer–Silica Nanocomposite Layers

Synthesis and Fabrication of Multifunctional Nanocomposites: Stable Dispersions of Nanoparticles Tethered with Short, Dense and Polydisperse Polymer Brushes in Poly(methyl methacrylate)

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