Silicate layer exfoliation in polyolefin/clay nanocomposites based on maleic anhydride modified polyolefins and organophilic clay

2004 ◽  
Vol 93 (1) ◽  
pp. 464-470 ◽  
Author(s):  
Naoki Hasegawa ◽  
Arimitsu Usuki
Keyword(s):  
Maleic Anhydride ◽  
Silicate Layer ◽  
Clay Nanocomposites ◽  
Organophilic Clay

Preparation and Characterization of Natural Rubber/Organophilic Clay Nanocomposites

2015 ◽  
pp. 131-138
Author(s):  
M. Gonzales-Fernandes ◽  
F. J. Esper ◽  
M. G. Silva-Valenzuela ◽  
G. R. Martín-Cortés ◽  
F. R. Valenzuela-Diaz ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Clay Nanocomposites ◽  
Organophilic Clay

Thermoplastic Olefin/Clay Nanocomposites. Effect of Matrix Composition, and Organoclay and Compatibilizer Structure on Morphology/Properties Relationships

2007 ◽  
Vol 7 (12) ◽  
pp. 4456-4464 ◽  
Author(s):  
S. M. L. Silva ◽  
M. A. López-Manchado ◽  
M. Arroyo
Keyword(s):  
Maleic Anhydride ◽  
Thermal Characteristics ◽  
Interlayer Spacing ◽  
Matrix Composition ◽  
Clay Nanocomposites ◽  
Ethylene Propylene ◽  
Rubber Blends ◽  
Noticeable Increase ◽  
The Matrix ◽  
Ethylene Propylene Diene Terpolymer

The effect of different nanofillers and compatibilizers (maleic anhydride-grafted-polypropylene and maleic anhydride-grafted-ethylene propylene diene terpolymer rubber) on the morphology, mechanical, mechanodynamical and thermal characteristics of thermoplastic olefins based on polypropylene and ethylene propylene diene terpolymer rubber blends has been analysed. A better affinity with the matrix and a better dispersion of the nanoparticles is observed in rubber rich matrices. Organoclay, such as Cloisite C15A and Cloisite C20A, treated with a non-polar surfactant give rise to intercalated nanocomposites, and the lower the concentration of surfactant (C20A) the most noticeable increase in interlayer spacing and consequently better properties in the nanocomposites. The maleic anhydride-grafted-ethylene propylene diene terpolymer rubber is a better compatibilizer for organo-clay nanocomposites based on rubber rich matrices.

Polyamide 6/clay nanocomposites using a cointercalation organophilic clay via melt compounding

2003 ◽  
Vol 88 (4) ◽  
pp. 953-958 ◽  
Author(s):  
Xiaohui Liu ◽  
Qiuju Wu ◽  
Lars A. Berglund ◽  
H. Lindberg ◽  
Jiaqi Fan ◽  
...  
Keyword(s):  
Polyamide 6 ◽  
Clay Nanocomposites ◽  
Melt Compounding ◽  
Organophilic Clay

Melt mixed compatibilized polypropylene/clay nanocomposites. II. Dispersion vs. thermal properties, optical transmittance, and fracture behaviors

2011 ◽  
Vol 45 (25) ◽  
pp. 2613-2631 ◽  
Author(s):  
S.-M. Lai ◽  
W.-C. Chen ◽  
X. S. Zhu
Keyword(s):  
Maleic Anhydride ◽  
Clay Content ◽  
Interlayer Spacing ◽  
Optical Transmittance ◽  
Clay Nanocomposites ◽  
Melt Mixing ◽  
Polyolefin Elastomer ◽  
Fracture Behaviors ◽  
Different Types ◽  
Deformation Behaviors

Compatibilized polypropylene (PP)/clay nanocomposites using two different types of maleated compatibilizers, polyolefin elastomer-grafted maleic anhydride (POE- g-MA) and PP-grafted maleic anhydride (PP- g-MA), to improve the dispersion of various amounts of commercial organoclay (Closite 20 A) were prepared via a melt-mixing technique. The optical transmittance for the POE- g-MA compatibilized nanocomposites was lower than that of PP- g-MA compatibilized cases, although POE- g-MA greatly increased the interlayer spacing of the clay compared with PP- g-MA. The optical transmittance of POE- g-MA compatibilized cases increased with increasing clay content, as a result from a preferentially POE- g-MA adsorbed onto the surface and edge of clay moiety. PP- g-MA compatibilized system conferred higher tensile strength, Young's modulus, or cutting strength through crystalline yielding effect even at the nanofracture zone of deformation, but lower tear strength than POE- g-MA compatibilized system. The current results suggested that high extent of exfoliation may not guarantee high transparency or strength varied with different deformation behaviors.

Dielectric Study of Molecular Mobility in Poly(propylene-graft-maleic anhydride)/Clay Nanocomposites

2005 ◽  
Vol 38 (7) ◽  
pp. 2764-2774 ◽  
Author(s):  
Martin Böhning ◽  
Harald Goering ◽  
Andreas Fritz ◽  
Klaus-W. Brzezinka ◽  
Gamal Turky ◽  
...  
Keyword(s):  
Maleic Anhydride ◽  
Molecular Mobility ◽  
Clay Nanocomposites ◽  
Dielectric Study ◽  
Poly Propylene

Polyaniline–DBSA/organophilic clay nanocomposites: synthesis and characterization

2002 ◽  
Vol 128 (1) ◽  
pp. 115-120 ◽  
Author(s):  
W. Jia ◽  
E. Segal ◽  
D. Kornemandel ◽  
Y. Lamhot ◽  
M. Narkis ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Clay Nanocomposites ◽  
Organophilic Clay

Synthesis and Characterization of Organophilic Clay from Cuban Chiqui Gomez Bentonite

2010 ◽  
Vol 660-661 ◽  
pp. 1093-1098 ◽  
Author(s):  
Guillermo R. Martín Cortés ◽  
Ticiane S. Valera ◽  
Fabio José Esper ◽  
Wildor Theodoro Hennies ◽  
Francisco Rolando Valenzuela-Díaz
Keyword(s):  
Structural Parameters ◽  
Specific Area ◽  
Clay Nanocomposites ◽  
Drilling Fluids ◽  
Octahedral Sheet ◽  
Organophilic Clays ◽  
Swelling Capacity ◽  
Organophilic Clay ◽  
High Specific Area

Smectites are clay mineral with a layered structure and nanometric thickness, high specific area and a huge variety of uses. Consisting on stacked layers of about 1nm thickness, including two silica tetrahedral and one octahedral sheet. Properties of natural Smectites can be enhanced by organic modification, due to the substitution of the exchangeable cations in the interlayer area. In fact, the properties of the modified smectite (organophilic clay) are related to its modified chemical composition and structural parameters. The interaction of smectite clays with surfactants has an important interest in the fields of drilling fluids, paints, cosmetic, ceramic industries and others. Recent applications are: remediation of contaminated areas and polymer/clay nanocomposites. The aim of this paper is to obtain organophilic clays using a bentonite from the Chiqui Gómez deposit in Central Cuba. The raw and organophilic clays were analyzed by DRX, SEM, swelling capacity in organic solvents and others.

Preparation and Characterization of Poly Methyl Methacrylate/Clay Nanocomposite Powders by Microwave-Assisted In-Situ Suspension Polymerization

2020 ◽  
Vol 20 (7) ◽  
pp. 4193-4197
Author(s):  
Seong Deok Seo ◽  
Kyung Chan Kang ◽  
Ji Won Jeong ◽  
Seung Min Lee ◽  
Ju Dong Lee ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Methyl Methacrylate ◽  
Hydroxyl Group ◽  
Silicate Layer ◽  
Clay Nanocomposites ◽  
Gravimetric Analysis ◽  
Poly Methyl Methacrylate ◽  
Nanocomposite Powders ◽  
Thermal Stability Of

The PMMA (poly methyl methacrylate)/clay nanocomposite powders were synthesized by In-Situ suspension polymerizations using microwave heating. The PMMA/clay nanocomposites were also sampled using injection moulding to make specimens for material characterization. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) indicated the formation of a highly intercalated clay layer in the nanocomposites. It was found that the microstructure of PMMA/clay nanocomposites was strongly dependent of content of clay. Thermo gravimetric analysis (TGA) indicated an improvement in the thermal stability of nanocomposites compared to that of the pure PMMA. Differential scanning calorimetry (DSC) showed that the nanocomposites had a higher glass transition (Tg) temperature than the PMMA. Fourier-transform infrared (FT-IR) spectroscopy indicated an interaction between the carbonyl group of PMMA and hydroxyl group of the clay. Therefore, a possible reason in enhanced material properties of nanocomposites is that the chemical interaction and nanostructure of PMMA polymer and intercalated inorganic silicate layer has increased the thermal stability of the PMMA/clay nanocomposites.

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