Epoxy/montmorillonite nanocomposites: influence of organophilic treatment on reactivity, morphology and fracture properties

Pluart, Loïc Le; Duchet, Jannick; Sautereau, H.

doi:10.1016/j.polymer.2005.10.089

Cited by 112 publications

(71 citation statements)

References 35 publications

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“…Thermoset epoxy-clay nanocomposites (ECN) are studied under different curing conditions, synthetic routes, organoclays, etc. The report suggests that good exfoliation can be achieved in ECN when amine based curing agents are used [21][22][23][24].…”

mentioning

confidence: 95%

Hydrophilic Modified Clay Nanocomposites: Effect of Clay on Thermal and Vibrational Properties

Kishore¹,

Venkatesh²,

Kumar

et al. 2014

ILCPA

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Epoxy (LY-556/HY-951) system filled with modified clay (MC) was synthesized by using mechanical shear mixing with the addition of hardener as tri-ethylene-tetra-amine (TETA). The effect of the fumed silica can be negated by the application of a shear force (e.g. mixing, brushing, spraying etc), allowing the liquid to flow, level out and permit the escape of entrapped air. The reinforcement effects of MC in the epoxy polymer on thermal, mechanical and vibration properties were studied. Curing study shows that the addition MC does not show any effect in the curing behavior of epoxy polymer. Thermogravimetry analysis (TGA) shows enhanced thermal stability for epoxy with MC fillers. The epoxy with MC fillers shows considerable improvement on tensile and impact properties over pure epoxy polymer. SEM studies shows that addition of clay significantly turns the epoxy system from brittle to ductile nature was played instrumental in scaling performance. The improvement in tensile and impact properties of nanocomposites is supported with the fracture surface studies. Epoxy with MC fillers shows enhanced vibration characteristics than that of the pure epoxy polymer. FTIR studies indicated the formation of C-H bonds on the surface of the nanocomposites.

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mentioning

confidence: 95%

Hydrophilic Modified Clay Nanocomposites: Effect of Clay on Thermal and Vibrational Properties

Kishore¹,

Venkatesh²,

Kumar

et al. 2014

ILCPA

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“…As a result, liquid rubber and thermoplastics have been adopted to toughen epoxy. [22] New tougheners developed so far include silicate layers, [21,[23][24][25][26] silica nanoparticles, [27][28][29][30][31] block copolymer nanoparticles [32][33] and rubber nanoparticles. [33] In contrast, no metal nanoparticle has been proposed to toughen epoxy.…”

Section: Introductionmentioning

confidence: 99%

Fabrication, Structure and Properties of Epoxy/Metal Nanocomposites

Zaman

et al. 2011

Macro Materials & Eng

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Gd2O3 nanoparticles surface‐modified with IPDI were compounded with epoxy. IPDI provided an anchor into the porous Gd2O3 surface and a bridge into the matrix, thus creating strong bonds between matrix and Gd2O3. 1.7 vol.‐% Gd2O3 increased the Young's modulus of epoxy by 16–19%; the surface‐modified Gd2O3 nanoparticles improved the critical strain energy release rate by 64.3% as compared to 26.4% produced by the unmodified nanoparticles. The X‐ray shielding efficiency of neat epoxy was enhanced by 300–360%, independent of the interface modification. Interface debonding consumes energy and leads to crack pinning and matrix shear banding; most fracture energy is consumed by matrix shear banding as shown by the large number of ridges on the fracture surface. magnified image

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“…The method of organoclay preparation is similar to that used by Le Pluart et al [7]. The silicates were exchanged with octadecylammonium ions at 80°C with two CEC's (cation exchange capacity) amine/ clay ratio.…”

Section: Organoclay Preparationmentioning

confidence: 99%

“…When the dispersion of organoclays in the matrix DGEBA/ D2000 is carried out manually, the mechanical properties do not increase significantly, compared with the results obtained with ultrasound mixing process. The improvement of mechanical properties might be linked to the state of dispersion at the micron and the nanometer scale level [7].…”

Section: Morphologymentioning

confidence: 99%

“…Furthermore, a balance between the intragallery and extragallery polymerization rates is essential to exfoliate the clay in an epoxy system [6]. According to the literature data [7][8][9][10][11][12], there are three different methods to synthesize polymer-clay nano-composites: melt intercalation process for thermoplastic polymers, solution method, where both organoclay and polymer precursors are dissolved in a polar organic solvent and in situ polymerization technique. However, the latter one was found to be the most effective technique for thermoset polymer matrix nanocomposites [6].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization of rubbery epoxy/organoclay hectorite nanocomposites

Boukerrou¹,

Duchet²,

Fellahi³

et al. 2007

Express Polym. Lett.

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Abstract. The present research investigates the morphology, the mechanical, and the viscoelastic properties of rubbery epoxy/clay nanocomposites synthesized by in situ polymerisation of a prepolymer diglycidyl ether of bisphenol-A crosslinked with an aliphatic diamine based on a polyoxypropylene backbone. The inorganic phase was hectorite, exchanged with octadecylammonium ions in order to give organophilic properties to the phyllosilicate. An ultrasonicator was used to disperse the silicate clay layer into epoxy-amine matrix. The morphology of epoxy-hectorite nanocomposites examined by transmission electron microscopy (TEM) showed that mixed delamination or intercalation or microdispersion could occur depending on type of organoclay. Moreover, the mechanical and viscoelastic properties were found to be improved with only the treated hectorite.

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Epoxy/montmorillonite nanocomposites: influence of organophilic treatment on reactivity, morphology and fracture properties

Cited by 112 publications

References 35 publications

Hydrophilic Modified Clay Nanocomposites: Effect of Clay on Thermal and Vibrational Properties

Hydrophilic Modified Clay Nanocomposites: Effect of Clay on Thermal and Vibrational Properties

Fabrication, Structure and Properties of Epoxy/Metal Nanocomposites

Synthesis and characterization of rubbery epoxy/organoclay hectorite nanocomposites

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