Layered Silicate Polymer Nanocomposites

2015 ◽  
pp. 33-60 ◽  
Author(s):  
Philippe Dubois
Keyword(s):  
Polymer Nanocomposites ◽  
Layered Silicate

Layered Clay Rubber Composites

2013 ◽  
Vol 571 ◽  
pp. 197-213 ◽  
Author(s):  
Wilson Runcy ◽  
Chandran Nithin ◽  
Thomas Sabu
Keyword(s):  
Aspect Ratio ◽  
Polymer Nanocomposites ◽  
High Aspect Ratio ◽  
Gas Permeability ◽  
Layered Silicate ◽  
High Strength ◽  
Polymer Science ◽  
Layered Clays ◽  
Layered Clay ◽  
The Many

The field of nanotechnology is one of the most popular areas for current research and development in virtually all technical disciplines. This obviously includes polymer science and technology. In recent year, researchers have been working on a new scale of reinforcement by incorporating a fine dispersion of clay silicatelayers in the polymer matrix to obtain polymer nanocomposites. Nanoscale layered clays, due to their high aspect ratio and high strength, can play an important role in forming effective polymer nanocomposites. Polymer nanocomposites have received much attention due to its large surface area and very high aspect ratio. Polymer nanocomposites especially rubber based nanocomposites is one of the many composite materials in which researchers and engineers have shown great interest due to their potential to be used in critical applications. Polymer layered silicate (PLS) nanocomposites often exhibit remarkable improvement in materials properties when compared with the virgin polymer or conventional micro and macro composites. These improvements can include high moduli and tear strength, improved heat resistance and electrical properties, decreased gas permeability, swelling to solvents and flammability.

Morphology of Layered Silicate− (NanoClay−) Polymer Nanocomposites by Electron Tomography and Small-Angle X-ray Scattering

2008 ◽  
Vol 41 (6) ◽  
pp. 2135-2143 ◽  
Author(s):  
Lawrence F. Drummy ◽  
Y. C. Wang ◽  
Remco Schoenmakers ◽  
Keith May ◽  
Mike Jackson ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
Small Angle ◽  
Electron Tomography ◽  
Layered Silicate ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Quantification of layered silicate dispersion in polymer nanocomposites

Polymer ◽  
2014 ◽  
Vol 55 (16) ◽  
pp. 4216-4225 ◽  
Author(s):  
Qian Gou ◽  
Mark D. Wetzel ◽  
Babatunde A. Ogunnaike
Keyword(s):  
Polymer Nanocomposites ◽  
Layered Silicate

Direct Observation of Fracture Mechanisms in Polymer-Layered Silicate Nanocomposites

1996 ◽  
Vol 457 ◽  
Author(s):  
Evangelos Manias ◽  
Wook Jin Han ◽  
Klaus D. Jandt ◽  
Edward J. Kramer ◽  
Emmanuel P. Giannelis
Keyword(s):  
Fracture Toughness ◽  
Polymer Nanocomposites ◽  
Direct Observation ◽  
Failure Mechanisms ◽  
Layered Silicate ◽  
Fracture Mechanisms ◽  
Three Point Bending ◽  
Silicate Nanocomposites

AbstractConventional three point bending and TEM techniques are employed to determine the fracture toughness and identify the failure mechanisms in model layered-silicate polymer nanocomposites.

Materials for food packaging applications based on bio-based polymer nanocomposites

2015 ◽  
Vol 30 (2) ◽  
pp. 143-173 ◽  
Author(s):  
Seyed Ahmad Attaran ◽  
Azman Hassan ◽  
Mat Uzir Wahit
Keyword(s):  
Polymer Nanocomposites ◽  
Food Packaging ◽  
Layered Silicate ◽  
Barrier Properties ◽  
Packaging Materials ◽  
Natural Polymer ◽  
Plastic Packaging ◽  
Aspect Ratios ◽  
Nanoparticle Surface ◽  
Silicate Nanocomposites

Concerns about environmental waste problems caused by non-biodegradable petrochemical-based plastic packaging materials as well as consumer demand for high-quality food products have led to increased interest in the development of biodegradable packaging materials using annually renewable natural biopolymers. Inherent shortcomings of natural polymer-based packaging materials such as low mechanical properties and low barrier properties can be recovered by applying nanocomposite technology. Polymer nanocomposites, especially natural biopolymer-layered silicate nanocomposites, exhibit markedly improved packaging properties due to large nanoparticle surface area and their significant aspect ratios. Additionally, natural biopolymer is susceptible to microorganisms, resulting in good biodegradability, which is one of the most promising aspects of its incorporation in packaging materials and industries. The present review article explains the various categories of nanoclay and bio-based polymer-based composites with particular regard to their application as packaging materials. It also gives an overview of the most recent advances and emerging new aspects of nanotechnology for development of composites for environmentally compatible food packaging materials.

scholarly journals The synthesis, structure and properties of polypropylene nanocomposites

2007 ◽  
Author(s):  
◽  
Vishnu Kribagaran Moodley
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Polymer Nanocomposites ◽  
Material Properties ◽  
Layered Silicate ◽  
Impact Testing ◽  
Transmission Electron ◽  
Low Weight ◽  
Scanning Electron

Polymer nanocomposites may be defined as structures that are formed by infusing layered-silicate clay into a thermosetting orthermoplastic polymer matrix. The nanocomposites are normally particle-filled polymers for which at least one dimension of the dispersed particles is in nanoscale. These clay-polymer nanocomposites have thus attracted great interest in industry and academia due to their exhibition of remarkable enhancements in material properties when compared to the virgin polymer or conventional micro and macro-composites. The present work describes the synthesis, mechanical properties and morphology of nano-phased polypropylene structures. The structures were manufactured by melt- blending low weight percentages of montmorillonite (MMT) nanoclays (0.5, 1, 2, 3, 5 wt. %) and polypropylene (PP) thermoplastic. Both virgin and infused polypropylene structures were then subjected to quasi-static tensile tests, flexural tests, micro-hardness tests, impact testing, compression testing, fracture toughness analysis, dynamic mechanical analysis, tribological testing. Scanning electron microscopy studies were then conducted to analyse the fracture surfaces of pristine PP and PP nanocomposite. X-ray diffraction studies were performed on closite 15A clay and polypropylene composites containing 0.5, 1, 2, 3 and 5 wt. % closite 15A nanoclay to confirm the formation of nanocomposites on the addition of organo clays. Transmission electron miscopy studies were then performed on the PP nanocomposites to determine the formation of intercalated, exfoliated or agglomerated nanoclay structures. Analysis of test data show that the mechanical properties increase with an increase in nanoclay loading up to a threshold of 2 wt. %, thereafter the material properties degrade. At low weight nanoclay loadings the enhancement of properties is attributed to the lower percolation points created by the high aspect ratio nanoclays. The increase in properties may also be attributed to the formation of intercalated and exfoliated nanocomposite structures formed at these loadings of clay. At higher weight loading, degradation in mechanical properties may be attributed to the formation of agglomerated clay tactoids. Results of XRD, transmission electron microscopy studies and scanning electron microscopy studies of the fractured surface of tensile specimens verify these hypotheses.

Sign in / Sign up

Export Citation Format

Share Document