Characterization of EVA/Clay Nanocomposite Membranes and Its Pervaporation Performance

Anilkumar, S.; Kumaran, M. G.; Thomas, Sabu

doi:10.1021/jp7096444

Cited by 30 publications

(19 citation statements)

References 31 publications

(41 reference statements)

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“…That is, the oxygen permeability of SR is reduced the most by almost 82% by incorporating 3 wt% of St‐LDH in the SR. Such a significant decrease in the oxygen permeability is attributed to reduced free volume due to the nanometric level of dispersion of exfoliated St‐LDH in the SR nanocomposite 54–56. However, only a 70% reduction in permeability is observed with 5 wt% loading, which is presumably due to aggregation of clay at higher loading.…”

Section: Resultsmentioning

confidence: 99%

Effect of bilayered stearate ion‐modified MgAl layered double hydroxide on the thermal and mechanical properties of silicone rubber nanocomposites

Pradhan

Srivastava

Bhowmick

et al. 2011

Polymer International

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The homogeneous dispersion of nanofillers in polymer matrices to form polymer nanocomposites remains a challenge in the development of high-performance polymer materials for various applications. In the work reported, a stearate ionmodified Mg-Al layered double hydroxide (St-LDH) as nanofiller was incorporated in a silicone rubber (SR) matrix by solution intercalation and subsequently characterized. X-ray diffraction and transmission electron microscopy studies confirm the formation of a predominantly exfoliated dispersion of St-LDH layers of 75-100 nm in width and about 1-2 nm in thickness in the SR. Thermogravimetric analysis shows that the thermal degradation temperature of the exfoliated SR/St-LDH (1 wt%)nanocomposites is about 80 • C higher than that of pure SR. Differential scanning calorimetric studies indicate that the melting and crystallization temperatures are higher by 4 and 10 • C for 5 and 8 wt% St-LDH-loaded SR nanocomposites compared to neat SR. A significant improvement of 97% in tensile strength and 714% in storage modulus and a reduction of 82% in oxygen permeability have been achieved at 3 wt% St-LDH loading in SR.

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Section: Resultsmentioning

confidence: 99%

Effect of bilayered stearate ion‐modified MgAl layered double hydroxide on the thermal and mechanical properties of silicone rubber nanocomposites

Pradhan

Srivastava

Bhowmick

et al. 2011

Polymer International

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“…Polymer-clay nanocomposites are hybrid composite materials in which the clay particles are dispersed in polymer matrix [7]. Nanoclays, such as montmorillonite, hectorite, bentonite etc.…”

Section: Introductionmentioning

confidence: 99%

Studies of Vapour Permeation of Chlorinated Hydrocarbons Through Natural Rubber-Clay Nanocomposite Membranes

C¹,

Sharika²,

Jogitha³

et al. 2020

Int. J. Membrane Sci. Techno.

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Natural Rubber/ clay nanocomposite membranes were prepared by blending on a two-roll mill followed by compression moulding in a hydraulic press. Vapour permeation studies were conducted with various chlorinated hydrocarbons for the characterization of membrane. Special attention has been given to the effect of clay concentration, type of clay, size of penetrant and type of vulcanization on the vapour transport behaviour of composites. It was found that permeability is low at higher clay concentration and also the permeability coefficient decreases with increase in penetrant size. Peroxide vulcanized membrane exhibit lowest vapour permeability than conventionally and efficiently vulcanized membrane, which can be attributed to the higher crosslink density of peroxide vulcanized membranes. The effect of clay concentration on the sorption and diffusion behaviour of composites is also investigated.

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“…This technology was extended to different fields, which includes, reinforced polymeric materials, polymeric membranes for several application as for instance: gas-separation [11], fuel cell applications [9,12], pervaporation [13,14]; protecting coatings [1,15] to name a few. One of the key issues is to assure a good dispersion and distribution of the inorganic phase in the polymeric matrix [16].…”

Section: Introductionmentioning

confidence: 99%

PEBAXTM-Silanized Al2O3Composite. Synthesis and Characterization

Ignacio¹,

Almeida²,

Karl³

et al. 2012

OJPChem

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Alumina nanoparticles were dispersed in poly(amide 12-b-tetramethylene oxide) copolymer through extrusion. The alumina particles were functionalized with 3-(2 trimethoxysilylethyl) cyclohexene oxide. The following PEBAX TM / Al 2 O 3 proportions were prepared: 0.1, 1.0, 5.0, and 10.0% w/w. The thermal stability of the nanocomposites was evaluated by thermograviemtric analysis under N 2 and was comparable to the neat PEBAX TM polymer. The thermo-oxidative degradation of the polymeric matrix by oxygen was strongly hindered by the functionalized alumina. The rule of mixture would predict that the thermal degradation should be strongly dominated by PEBAX TM matrix. Therefore, the physical mixture of PEBAX TM and silanized alumina should be almost as stable as pure PEBAX TM . However, the experimental results suggest that the nanocomposites are more stable than the mixture of their components. This stabilization effect is evident in the temperature range between 300˚C and 400˚C, in which the degradation of the PA12 block takes place.

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Characterization of EVA/Clay Nanocomposite Membranes and Its Pervaporation Performance

Cited by 30 publications

References 31 publications

Effect of bilayered stearate ion‐modified MgAl layered double hydroxide on the thermal and mechanical properties of silicone rubber nanocomposites

Effect of bilayered stearate ion‐modified MgAl layered double hydroxide on the thermal and mechanical properties of silicone rubber nanocomposites

Studies of Vapour Permeation of Chlorinated Hydrocarbons Through Natural Rubber-Clay Nanocomposite Membranes

PEBAX<sup>TM</sup>-Silanized Al<sub>2</sub>O<sub>3</sub>Composite. Synthesis and Characterization

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Characterization of EVA/Clay Nanocomposite Membranes and Its Pervaporation Performance

Cited by 30 publications

References 31 publications

Effect of bilayered stearate ion‐modified MgAl layered double hydroxide on the thermal and mechanical properties of silicone rubber nanocomposites

Effect of bilayered stearate ion‐modified MgAl layered double hydroxide on the thermal and mechanical properties of silicone rubber nanocomposites

Studies of Vapour Permeation of Chlorinated Hydrocarbons Through Natural Rubber-Clay Nanocomposite Membranes

PEBAX&lt;sup&gt;TM&lt;/sup&gt;-Silanized Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;Composite. Synthesis and Characterization

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PEBAX<sup>TM</sup>-Silanized Al<sub>2</sub>O<sub>3</sub>Composite. Synthesis and Characterization