Nanoparticle dispersion in polymer nanocomposites by spin-diffusion-averaged paramagnetic enhanced NMR relaxometry

Nanoscale ◽  
2014 ◽  
Vol 6 (3) ◽  
pp. 1318-1322 ◽  
Author(s):  
Bo Xu ◽  
Johannes Leisen ◽  
Haskell W. Beckham
Keyword(s):  
Polymer Nanocomposites ◽  
Quantitative Assessment ◽  
Spin Diffusion ◽  
Analytical Relationship ◽  
Clay Nanocomposites ◽  
Nanoparticle Dispersion ◽  
Nmr Relaxometry

An analytical relationship was developed that allows quantitative assessment of nanoparticle spacings in polymer–clay nanocomposites from NMR relaxometric data.

Nanoparticle dispersion in polymer nanocomposites by spin-diffusion-averaged paramagnetic enhanced NMR relaxometry: scaling relations and applications

2014 ◽  
Vol 16 (31) ◽  
pp. 16790-16797 ◽  
Author(s):  
Bo Xu ◽  
Johannes Leisen ◽  
Haskell W. Beckham
Keyword(s):  
Polymer Nanocomposites ◽  
Spin Diffusion ◽  
Scaling Relations ◽  
Nanoparticle Dispersion ◽  
Clay Dispersion ◽  
Nmr Relaxometry

Scaling relations were identified between NMR relaxometric observables and nanoparticle contents/spacings that enable predictions of clay dispersion in polymer nanocomposites.

Role of Casting Solvent on Nanoparticle Dispersion in Polymer Nanocomposites

2014 ◽  
Vol 47 (15) ◽  
pp. 5246-5255 ◽  
Author(s):  
Nicolas Jouault ◽  
Dan Zhao ◽  
Sanat K. Kumar
Keyword(s):  
Polymer Nanocomposites ◽  
Nanoparticle Dispersion

scholarly journals Polymerically Modified Layered Silicates: An Effective Route to Nanocomposites

2008 ◽  
Vol 8 (4) ◽  
pp. 1597-1615 ◽  
Author(s):  
Jinguo Zhang ◽  
E. Manias ◽  
Charles A. Wilkie
Keyword(s):  
Polymer Nanocomposites ◽  
Alkyl Chain ◽  
Layered Silicates ◽  
Clay Nanocomposites ◽  
Extensive Investigation ◽  
Polymeric Surfactants ◽  
Comprehensive Review ◽  
Inorganic Cations ◽  
Clay Modification ◽  
Long Alkyl Chain

Polymer/clay nanocomposites have been under an extensive investigation for about 15 years. Traditional methods to modify the clay are usually limited to small organic cations, preferably containing long alkyl chain(s), which are exchanged with the inorganic cations in the clay gallery. This article provides a comprehensive review on the strategies for clay modification using polymeric surfactants or polycations: from the synthesis of such surfactants, through the preparation of the polymerically modified clays, and to the fabrication of the respective polymer nanocomposites and their properties.

Fabrication and Mechanical Characterization of Polypropylene Clay Nanocomposites

2021 ◽  
Vol 882 ◽  
pp. 107-113
Author(s):  
Afshin Zamani Zakaria ◽  
Salar Salahi ◽  
Guney Guven Yapici
Keyword(s):  
Mechanical Properties ◽  
Polymer Nanocomposites ◽  
Mechanical Characterization ◽  
Clay Nanocomposites ◽  
Strain Rates ◽  
Influence Of Process Parameters ◽  
Reinforced Polymer ◽  
Tensile Performance ◽  
Extrusion Method

Investigating the influence of process parameters is vital to improve the mechanical properties of nanoparticle reinforced polymer nanocomposites. In this effort, nanocomposites of polypropylene/nanoclay are prepared by the extrusion method. In order to characterize the mechanical behavior of nanocomposites over different compounding ratios, samples are prepared with 5 and 10 wt%. Effect of re-extrusion and PP-g-MA compatibilizer on the tensile performance of nanocomposites is evaluated at different strain rates. XRD evaluation of compounds indicated that re-extrusion is an important factor in increasing the exfoliation degree.

scholarly journals 3D Characterization of Nanoparticle Dispersion in Polymer Nanocomposites by TEM Tomography

2013 ◽  
Vol 19 (S2) ◽  
pp. 534-535
Author(s):  
F. Dalmas ◽  
E. Leroy ◽  
M. Roth ◽  
F. Allouche ◽  
F. Boué ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
Nanoparticle Dispersion

Extended abstract of a paper presented at Microscopy and Microanalysis 2013 in Indianapolis, Indiana, USA, August 4 – August 8, 2013.

Experimental Investigation and Monte Carlo Simulation of Glass Transition in Polymer Nanocomposites

2005 ◽  
Vol 23 ◽  
pp. 339-342 ◽  
Author(s):  
Rengaswamy Jayaganthan ◽  
Rohitkumar H. Vora
Keyword(s):  
Experimental Investigation ◽  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Polymer Nanocomposites ◽  
Clay Nanocomposites

The glass transition temperature (Tg) of Fluoro-Poly(ether-imide) and Fluoro-Poly(either-Imide)/MMY clay Nanocomposites has been investigated by both experiments and Monte Carlo Simulation. It was observed that the (Tg) values of the nanocomposites increases with increase in clay contents.

The Structure of Polycaprolactone-Clay Nanocomposites Investigated by 1H NMR Relaxometry

2012 ◽  
Vol 12 (9) ◽  
pp. 7307-7313 ◽  
Author(s):  
Mariana S. S. B. Monteiro ◽  
Claudia Lopes Rodrigues ◽  
Roberto P. C. Neto ◽  
Maria Inês Bruno Tavares
Keyword(s):  
1H Nmr ◽  
Clay Nanocomposites ◽  
Nmr Relaxometry ◽  
1H Nmr Relaxometry
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