Journal ArticleDOI
Highly concentrated, intercalated silicate nanocomposites: Synthesis and characterization
TLDR
In this paper, a model for estimating the transition concentration of the intercalated morphology of a PMMA-layered silicate nanocomposite is presented. But the model assumes that the composite volume is saturated with inorganic material, and the d spacing decreases to homogeneously distribute the polymer volume.Abstract:
PMMA-layered silicate intercalated nanocomposites are synthesized using supercritical carbon dioxide (scCO2) to produce ordered materials with significant levels of reinforcement. The scCO2 is used to homogeneously distribute monomer as well as act as a low-viscosity solvent for MMA polymerization. This route allows for synthesis of nanocomposites containing significant levels of organically modified layered silicates (OMLS). Below 40 wt % OMLS, the intercalated nanocomposites exhibit a d spacing commensurate with dimensions of the fully extended surfactant chains. Above 40 wt % OMLS, the composite volume is saturated with inorganic material, and the d spacing decreases to homogeneously distribute the polymer volume. A model for estimating this transition concentration is presented. At concentrations approaching the homogeneously intercalated morphology, the basic mechanical and physical properties of the composite are investigated.read more
Citations
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Polymer/layered silicate nanocomposites: a review from preparation to processing
TL;DR: A review of the academic and industrial aspects of the preparation, characterization, materials properties, crystallization behavior, melt rheology, and processing of polymer/layered silicate nanocomposites is given in this article.
Journal ArticleDOI
Nanocomposites Derived from Polymers and Inorganic Nanoparticles
In-Yup Jeon,Jong-Beom Baek +1 more
TL;DR: In this paper, a review of polymer-based inorganic nanoparticle composites is presented, where the potential applications of the resultant nanocomposites are various, e.g., automotive, aerospace, opto-electronics, etc.
Journal ArticleDOI
Preparation of polymer–clay nanocomposites and their properties
Quang T. Nguyen,Donald G. Baird +1 more
TL;DR: An overview of the progress in polymer nanocomposites is presented in this article with an emphasis on the different methods used for preparing polymer-layered silicate (PLS) nan composites and the extent to which properties are enhanced.
Journal ArticleDOI
Materials processing in supercritical carbon dioxide: surfactants, polymers and biomaterials
TL;DR: In this paper, a review of recent advances in the use of supercritical carbon dioxide (scCO2) in materials synthesis and materials processing is presented, focusing on the development of new polymer processing and polymer blend technologies in scCO2, which enable the synthesis of some very complex polymer composites and blends.
Journal ArticleDOI
Recent advances in polymer/layered silicate nanocomposites: an overview from science to technology
TL;DR: In this article, the authors describe recent advances in polymer/layered silicate nanocomposites with the primary focus on these advances from basic science to technology, and the authors are far from the goal in terms of understanding the mechanisms of the enhancement effect.
References
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Journal ArticleDOI
Synthesis and properties of polyimide–clay hybrid
TL;DR: A polyimide hybrid with montmorillonite clay mineral has been synthesized from a dimethylacetamide (DMAC) solution of poly(amic acid) and a DMAC dispersion of montmoroniite intercalated with an ammonium salt of dodecylamine as mentioned in this paper.
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Nanolayer Reinforcement of Elastomeric Polyurethane
TL;DR: In this article, the first examples of thermoset polyurethane−clay nanocomposites have been prepared by curing a polyurethene network in the presence of alkylammonium-exchanged forms of montmorillonite.
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Synthetic organo- and polymer- clays : preparation, characterization, and materials applications.
TL;DR: In this paper, a general technique for the hydrothermal synthesis of clay minerals in the presence of organic, organometallic, and polymeric intercalants is described, along with their characterization and materials applications.
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Polymerization in supercritical fluid-swollen polymers : a new route to polymer blends
TL;DR: In this paper, the infusion of CO 2 solutions of styrene into a variety of semicrystalline and amorphous polymers (polychlorotrifluoroethylene, poly(4-methyl-1-pentene), HDPE, nylon 66, polyoxymethylene and Bisphenol A polycarbonate) and thermally radical polymerizations within the swollen substrates to generate polystyrene-substrate polymer blends are described.
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A model for particle cavitation in rubber-toughened plastics
TL;DR: In this paper, an energy-balance criterion for cavitation of rubber particles was proposed by including a term for the energy stored in the matrix and released during expansion of the voids.