Synthesis and properties of poly(methyl methacrylate)/clay nanocomposites using natural montmorillonite and synthetic Fe‐montmorillonite by emulsion polymerization

Kong, Qinghong; Hu, Yuan; Yang, Ling; Fan, Weicheng; Chen, Zuyao

doi:10.1002/pc.20156

Cited by 53 publications

(44 citation statements)

References 21 publications

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“…Surface & Coatings Technology j o u r n a l h o m e p a g e : w w w. e l s ev i e r. c o m / l o c a t e / s u r fc o a t types of MMT may possess different performances from natural MMT [9]. For example, the catalysis effect of Cu 2+ -exchanged and Fe 3+ -exchanged montmorillonite (Cu 2+ -MMT, Fe 3+ -MMT) increased remarkably the charred residue of nylon6 nanocomposites [10].…”

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

“…It has also been noticed that their nanometric size made them suitable for synergistic effects with organoclays, allowing thermal and fire behavior performances to be improved. In the present work, the Fe-montmorillonite was firstly hydrothermal synthesized [9,16,17] and then was modified by cetyltrimethyl ammonium bromide (CTAB). The difference between Fe-MMT and natural MMT was that Fe (III) ion replaced Al (III) ion in the crystal lattice of the MMT.…”

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

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Structure, surface morphology, thermal and flammability characterizations of polyamide6/organic-modified Fe-montmorillonite nanocomposite fibers functionalized by sputter coating of silicon

Cai¹,

Wu²,

Wei³

et al. 2008

Surface and Coatings Technology

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Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 99%

Structure, surface morphology, thermal and flammability characterizations of polyamide6/organic-modified Fe-montmorillonite nanocomposite fibers functionalized by sputter coating of silicon

Cai¹,

Wu²,

Wei³

et al. 2008

Surface and Coatings Technology

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“…27 TGA is a technique in which changes in physical and chemical properties of materials are measured as a function of increasing temperature (with constant heating rate), or as a function of time (with constant temperature and/or constant mass loss). [59][60][61] In order to examine the thermal stability, thermal analyses were carried out on the PMMA/STMO composites as well as on pure PMMA for comparison. Figure 7 shows the TG curve recorded for the pure PMMA (a) and for PMMA/STMO composites (10 to 50 wt.%) (b-f) in nitrogen atmosphere (flow rate: 60 ml min À1 Þ, at a heating rate of 10 C min À1 .…”

Section: Resultsmentioning

confidence: 99%

Effect of Sr2TiMnO6 fillers on mechanical, dielectric and thermal behaviour of PMMA polymer

et al. 2015

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Composites of poly(methyl methacrylate) (PMMA) and Sr 2 TiMnO 6 (STMO) were fabricated via melt mixing followed by hot pressing technique. These were characterized using X-ray diffraction (XRD), thermo gravimetric analysis (TGA), differential scanning calorimetry (DSC), thermo mechanical analysis (TMA) and impedance analyser for their structural, thermal and dielectric properties. The coefficient of thermal expansion (CTE) was measured between 40 C and 100 C for pure PMMA is 115.2 ppm/ C, which was decreased to 78.58 ppm/ C when the STMO content was increased to 50 wt.% in PMMA. There was no difference in the glass transition (T g ) temperature of the PMMA polymer and their composites. However, the FTIR analysis indicated possible interaction between the PMMA and STMO. The density and the hardness were increased as the STMO content increased in the PMMA matrix. Permittivity was found to be as high as 30.9 at 100 Hz for the PMMAþSTMO-50 wt.% composites, indicating the possibility of using these materials for capacitor applications. The thermal stability of polymer was enhanced by incorporation of STMO fillers.

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“…This may be because of the SDS within the LDH, which has hydrophobic functional groups that might help MH to disperse evenly in the EVA matrix. The LDHs could then act as dispersants during the melt blending of MH with EVA and thus help MH particles to disperse homogenously in the EVA [9].…”

Section: Morphological Characterizationmentioning

confidence: 99%

Performance of halogen-free flame retardant EVA/MH/LDH composites with nano-LDHs and MH

Ding

2011

Chin. Sci. Bull.

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The flammability properties of three series of Ethylene-Vinyl Acetate/Magnesium Hydroxide/Layered Double Hydroxide (EVA/MH/LDH) composites as well as the flame retardance effect between LDH and the conventional flame retardant additive MH are investigated. In addition to acting as an insulating barrier, LDH assists the dispersion of MH particles in the EVA matrix, and promotes the formation of the char residues because of its abundant interlayer hydroxyl groups. Composites containing LDH show good flame retardancy in Cone and LOI testings. This means that the combustion properties of the composites have decreased, which may lessen the fire hazard when this materials are used. Ethylene-vinyl acetate copolymers (EVA) with different vinyl acetate (VA) contents are extensively used in many fields, especially in the cable industry as excellent insulating materials with good physical and chemical properties [1]. However, EVA resins are particularly flammable and emit a large amount of smoke when burnt. Magnesium hydroxide is a conventional non-toxic, smoke-suppressing halogen-free flame retardant additive with a high decomposition temperature that is used in flame retardant polymeric materials. However, its flame retardant efficiency is low, so very large amounts must be used, leading to a sharp drop in the mechanical properties of the flame retardant materials. To minimize this effect, the dispersion of MH and its compatibility with the polymer matrix must be improved. The use of very small (hyperfine) particles and surface treatment of MH are two important methods to achieve this. The usual surface modifiers for MH are organic reagents or polymers, which could be detrimental to combustion properties such as the limiting oxygen index (LOI). Hyperfine magnesium hydroxide has been very effective at improving the flame retardance and mechanical properties of polymeric materials, but its dispersion in polymer matrices is very difficult [2]. In recent years, the intercalated or exfoliated polymer/ LDH nanocomposites have attracted great interest in the field of materials science, because of their excellent thermal stability, flame retardance, and physico-chemical properties [3][4][5][6]. In the present work, we use MH and organic modified LDH layers as a flame retardant system and study their synergistic effects on the morphology and structure, flame retardant properties and mechanical properties of EVA/MH/ LDH nanocomposites. X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), LOI, dynamic mechanical thermal analysis (DMTA), and cone calorimetry (Cone) tests are performed. The aim is to study the effects of adding LDH and MH to EVA resin (in particular its flame retardant and mechanical properties), and also to explore three difference synergistic systems containing MgAl-LDH, ZnAl-LDH, or MgFe-LDH. The main purpose of this study is to develop a new type of low smoke, halogen-free flame retardant Ding Y Y, et al. Chinese Sci Bull December (2011) and sodium dodecyl sulfate...

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Synthesis and properties of poly(methyl methacrylate)/clay nanocomposites using natural montmorillonite and synthetic Fe‐montmorillonite by emulsion polymerization

Cited by 53 publications

References 21 publications

Structure, surface morphology, thermal and flammability characterizations of polyamide6/organic-modified Fe-montmorillonite nanocomposite fibers functionalized by sputter coating of silicon

Structure, surface morphology, thermal and flammability characterizations of polyamide6/organic-modified Fe-montmorillonite nanocomposite fibers functionalized by sputter coating of silicon

Effect of Sr2TiMnO6 fillers on mechanical, dielectric and thermal behaviour of PMMA polymer

Performance of halogen-free flame retardant EVA/MH/LDH composites with nano-LDHs and MH

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