Entanglement density and particle dynamics in rigid interfacial layers of polymer nanocomposites

2021 ◽  
Vol 130 (6) ◽  
pp. 064701
Author(s):  
Di Wu ◽  
Yi Feng ◽  
Ruhao Li ◽  
Rahmi Ozisik ◽  
Pinar Akcora
Keyword(s):  
Polymer Nanocomposites ◽  
Particle Dynamics ◽  
Interfacial Layers ◽  
Entanglement Density

Size-Dependent Particle Dynamics in Entangled Polymer Nanocomposites

Langmuir ◽  
2016 ◽  
Vol 32 (2) ◽  
pp. 596-603 ◽  
Author(s):  
Rahul Mangal ◽  
Samanvaya Srivastava ◽  
Suresh Narayanan ◽  
Lynden A. Archer
Keyword(s):  
Polymer Nanocomposites ◽  
Particle Dynamics ◽  
Size Dependent ◽  
Entangled Polymer

scholarly journals Chemical heterogeneity in interfacial layers of polymer nanocomposites

Soft Matter ◽  
2018 ◽  
Vol 14 (23) ◽  
pp. 4784-4791 ◽  
Author(s):  
Siyang Yang ◽  
Siqi Liu ◽  
Suresh Narayanan ◽  
Chongfeng Zhang ◽  
Pinar Akcora
Keyword(s):  
Molecular Weight ◽  
Polymer Nanocomposites ◽  
Lower Molecular Weight ◽  
Chemical Heterogeneity ◽  
Interfacial Layers ◽  
The Matrix

A lower molecular weight of the matrix enhances the reinforcement of PMMA adsorbed nanoparticles in PMA composites above the Tg of both polymers.

Stability of particle dispersion and heterogeneous interfacial layers in polymer nanocomposites

Polymer ◽  
2021 ◽  
Vol 226 ◽  
pp. 123813
Author(s):  
Chen Gong ◽  
Donovan Weiblen ◽  
Deniz Rende ◽  
Pinar Akcora ◽  
Rahmi Ozisik
Keyword(s):  
Polymer Nanocomposites ◽  
Particle Dispersion ◽  
Interfacial Layers

Multiscale Simulation of Polymer Nanocomposites in Processing: Challenges and Outlooks

2015 ◽  
Vol 651-653 ◽  
pp. 533-538 ◽  
Author(s):  
Ali Gooneie ◽  
Hannelore Mattausch ◽  
Andreas Witschnigg ◽  
Stephan Schuschnigg ◽  
Clemens Holzer
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Polymer Nanocomposites ◽  
Shear Flows ◽  
Dissipative Particle Dynamics ◽  
Multiscale Simulation ◽  
Particle Dynamics ◽  
Polymer Matrices ◽  
Transmission Electron ◽  
Satisfactory Precision

This paper attempts to address current possibilities in the multiscale simulation of polymer nanocomposites (PNCs) in processing. To provide a comprehensive perspective, a number of PNCs were produced by the incorporation of nanoclays in different polymer matrices. The microstructure evolutions of the simulated counterparts of such systems were studied with and without shear flows in a dissipative particle dynamics (DPD) framework spanning from several nanometers up to a few microns. Transmission electron microscopy (TEM) was utilized to contrast the simulations against the actual nanocomposites. A satisfactory precision was achieved in the build-up of the simulated structures. A significant characteristic of anisometric particles was studied, namely the orientation of the particles due to the imposed flows. It was shown that the orientation of such particles could be well described. Finally, opportunities were addressed for the simulations to carry on to the higher scales.

Polymer nanocomposites: polymer and particle dynamics

Soft Matter ◽  
2012 ◽  
Vol 8 (42) ◽  
pp. 10813 ◽  
Author(s):  
Daniel Kim ◽  
Samanvaya Srivastava ◽  
Suresh Narayanan ◽  
Lynden A. Archer
Keyword(s):  
Polymer Nanocomposites ◽  
Particle Dynamics

Local Viscosity of Interfacial Layers in Polymer Nanocomposites Measured by Magnetic Heating

2020 ◽  
Vol 2 (12) ◽  
pp. 5542-5549
Author(s):  
Di Wu ◽  
Donovan G. Weiblen ◽  
Rahmi Ozisik ◽  
Pinar Akcora
Keyword(s):  
Polymer Nanocomposites ◽  
Interfacial Layers ◽  
Magnetic Heating

The morphologies and electrical properties of indium contacts on (100) cadmium telluride surfaces

1992 ◽  
Vol 50 (2) ◽  
pp. 1422-1423
Author(s):  
A.M. Letsoalo ◽  
M.E. Lee ◽  
E.O. de Neijs
Keyword(s):  
Electrical Properties ◽  
Cadmium Telluride ◽  
Methanol Solution ◽  
Electrical Characteristics ◽  
Metal Contacts ◽  
Deposition Technique ◽  
Interfacial Layers ◽  
Semiconductor Contacts ◽  
Grown Single Crystal ◽  
Diamond Abrasive

Semiconductor devices require metal contacts for efficient collection of electrical charge. The physics of these metal/semiconductor contacts assumes perfect, abrupt and continuous interfaces between the layers. However, in practice these layers are neither continuous nor abrupt due to poor nucleation conditions and the formation of interfacial layers. The effects of layer thickness, deposition rate and substrate stoichiometry have been previously reported. In this work we will compare the effects of a single deposition technique and multiple depositions on the morphology of indium layers grown on (100) CdTe substrates. The electrical characteristics and specific resistivities of the indium contacts were measured, and their relationships with indium layer morphologies were established.Semi-insulating (100) CdTe samples were cut from Bridgman grown single crystal ingots. The surface of the as-cut slices were mechanically polished using 5μm, 3μm, 1μm and 0,25μm diamond abrasive respectively. This was followed by two minutes immersion in a 5% bromine-methanol solution.

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