PMMA/mesoporous silica nanocomposites: effect of framework structure and pore size on thermomechanical properties

Zhang, Faai; Lee, Dong-Keun; Pinnavaia, Thomas J.

doi:10.1039/b9py00232d

Cited by 91 publications

(76 citation statements)

References 50 publications

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“…They can be indexed as (100), (110), and (200) Bragg reflections, associated with p6mm hexagonal symmetry [26]. Figure 2b presents the nitrogen adsorption-desorption isotherms and the corresponding pore-size distribution curves of SBA-15.…”

Section: Resultsmentioning

confidence: 99%

Thermal and frictional properties of mesoporous silica SBA‐15/phenolic resin nanocomposites

Gao

Feng

et al. 2016

Polymer Composites

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Mesoporous silica SBA-15/phenolic resin hybrid materials (SBA-15/PF) were fabricated through in situ polymerization of phenol and formaldehyde in the presence of SBA-15 and subsequent SBA-15/PF nanocomposites were prepared by compression moldings. The results revealed that the glass transition temperatures and thermal stability of SBA-15/PF hybrid materials were obviously enhanced compared to pure PF. In addition, the dynamic mechanical and friction properties of SBA-15/PF nanocomposites were improved remarkably. For SBA-15/PF nanocomposites containing 5.0 wt % of SBA-15, the glass transition temperature of the nanocomposite increased by 13.08C. Moreover, the nanocomposite showed stable friction coefficient and decreased wear rate. The wear mechanism was a combination of adhesive wear and abrasive wear for PF/ SBA-15 nanocomposites, while for pure PF friction material was a combination of adhesive wear and fatigue wear. POLYM. COMPOS., 00:000-000, 2016.

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Section: Resultsmentioning

confidence: 99%

Thermal and frictional properties of mesoporous silica SBA‐15/phenolic resin nanocomposites

Gao

Feng

et al. 2016

Polymer Composites

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“…On the other hand, unlike nanosheets and nanotubes, the one-dimensional mesopore space is randomly oriented inside the composites to endow isotropy for nanocomposites. 14 Although m-SiO2 is clearly a promising polymer additive, few studies have reported the new application of m-SiO2 on the flame retardancy of polymers. 15 Thus, broadening the application of m-SiO2 is a promising avenue of research.…”

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confidence: 99%

Synthesis of Mesoporous Silica@Co–Al Layered Double Hydroxide Spheres: Layer-by-Layer Method and Their Effects on the Flame Retardancy of Epoxy Resins

Jiang

Bai

Tang

et al. 2014

ACS Appl. Mater. Interfaces

151

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Hierarchical mesoporous silica@Co–Al layered double hydroxide (m-SiO2@Co–Al LDH) spheres were prepared through a layer-by-layer assembly process, in order to integrate their excellent physical and chemical functionalities. TEM results depicted that, due to the electrostatic potential difference between m-SiO2 and Co–Al LDH, the synthetic m-SiO2@Co–Al LDH hybrids exhibited that m-SiO2 spheres were packaged by the Co–Al LDH nanosheets. Subsequently, the m-SiO2@Co–Al LDH spheres were incorporated into epoxy resin (EP) to prepare specimens for investigation of their flame-retardant performance. Cone results indicated that m-SiO2@Co–Al LDH incorporated obviously improved fire retardant of EP. A plausible mechanism of fire retardant was hypothesized based on the analyses of thermal conductivity, char residues, and pyrolysis fragments. Labyrinth effect of m-SiO2 and formation of graphitized carbon char catalyzed by Co–Al LDH play pivotal roles in the flame retardance enhancement.

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“…Mesoporous silica with many different pore sizes and structures are used for the preparation of polymer nanocomposites. 6 Few studies have been performed on exfoliated and intercalated layered double hydroxides/polymer nanocomposites, in which very strong electrostatic interactions between layer double hydroxide (LDH) layers via gallery anions make the complete exfoliation or intercalation of the LDH layers extremely difficult. 7,8 To overcome this, organic modifiers with long carbon chains to increase both interlayer spacing and compatibility with polymer matrices are used to modify the clay prior to nanocomposite preparation.…”

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confidence: 99%

Effect of Multiorganomodified LiAl‐ or MgAl‐Layered Double Hydroxide on the PMMA Nanocomposites

2016

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ABSTRACT:Herein we investigated new type of poly(methyl methacrylate) (PMMA) nanocomposites by solution polymerization of methyl methacrylate (MMA) in the presence of multimodified Layer double hydroxide (LDHs). Two different anionic exchange capacities LiAl and MgAl types of LDHs were used and modified with cocoamphodipropionate (K2) and sodium dodecyl sulfate by the anionic ion exchange method. The modified and pure LDHs have been characterized by X-ray diffraction (XRD), and Fourier transform infrared spectroscopy. Solution-polymerized PMMA nanocomposite LDH dispersion morphology was investigated by transmission electron microscopy and XRD. Thermo-mechanical, gas barrier, and optical clarity properties of nanocomposite systems are greatly improved relative to the virgin PMMA. C 2016 Wiley Periodicals, Inc. Adv Polym Technol 2018,

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PMMA/mesoporous silica nanocomposites: effect of framework structure and pore size on thermomechanical properties

Cited by 91 publications

References 50 publications

Thermal and frictional properties of mesoporous silica SBA‐15/phenolic resin nanocomposites

Thermal and frictional properties of mesoporous silica SBA‐15/phenolic resin nanocomposites

Synthesis of Mesoporous Silica@Co–Al Layered Double Hydroxide Spheres: Layer-by-Layer Method and Their Effects on the Flame Retardancy of Epoxy Resins

Effect of Multiorganomodified LiAl‐ or MgAl‐Layered Double Hydroxide on the PMMA Nanocomposites

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