Surface Functionalization-Induced Effects on Nanoparticle Dispersion and Associated Changes in the Thermophysical Properties of Polymer Nanocomposites

2021 ◽  
Author(s):  
Anindya Mitra ◽  
Milana Trifkovic ◽  
Sathish Ponnurangam
Keyword(s):  
Polymer Nanocomposites ◽  
Surface Functionalization ◽  
Thermophysical Properties ◽  
Nanoparticle Dispersion

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 Versatile Phase Transfer Method for the Efficient Surface Functionalization of Gold Nanoparticles: Towards Controlled Nanoparticle Dispersion in a Polymer Matrix

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Katarzyna Ranoszek-Soliwoda ◽  
Maria Girleanu ◽  
Beata Tkacz-Szczęsna ◽  
Marcin Rosowski ◽  
Grzegorz Celichowski ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Polymer Matrix ◽  
Surface Functionalization ◽  
Transfer Process ◽  
Metallic Nanoparticles ◽  
Phase Transfer ◽  
Electron Tomography ◽  
Homogeneous Layer ◽  
Nanoparticle Dispersion ◽  
Vis Spectroscopy

In electronic devices based on hybrid materials such as nonvolatile memory elements (NVMEs), it is essential to control precisely the dispersion of metallic nanoparticles (NPs) in an insulating polymer matrix such as polystyrene in order to control the functionality of the device. In this work the incorporation of AuNPs in polystyrene films is controlled by tuning the surface functionalization of the metallic nanoparticles via ligand exchange. Two ligands with different structures were used for functionalization: 1-decanethiol and thiol-terminated polystyrene. This paper presents a versatile method for the modification of gold nanoparticles (AuNPs) with thiol-terminated polystyrene ligands via phase transfer process. An organic colloid of AuNPs (5±1 nm diameter) is obtained by the phase transfer process (from water to toluene) that allows exchanging the ligand adsorbed on AuNPs surface (hydrophilic citrate/tannic acid to hydrophobic thiols). The stability, size distribution, and precise location of modified AuNPs in the polymer matrix are obtained from UV-Vis spectroscopy, dynamic light scattering (DLS), and electron tomography. TEM tomographic 3D imaging demonstrates that the modification of AuNPs with thiol-terminated polystyrene results in homogeneous particle distribution in the polystyrene matrix compared to 1-decanethiol modified AuNPs for which a vertical phase separation with a homogeneous layer of AuNPs located at the bottom of the polymer matrix was observed.

Analysis of thermophysical properties of polymer nanocomposites based on polypropylene

2016 ◽  
Vol 0 (2) ◽  
Author(s):  
Roman V. Dinzhos ◽  
Nataliia M. Fialko ◽  
Mykola A. Rekhteta ◽  
Volodymyr M. Makhrovskyi
Keyword(s):  
Polymer Nanocomposites ◽  
Thermophysical Properties

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.

scholarly journals Surface functionalization on the thermal conductivity of graphene–polymer nanocomposites

2014 ◽  
Vol 5 (2) ◽  
pp. 123-132 ◽  
Author(s):  
Mingchao Wang ◽  
Dilini Galpaya ◽  
Zheng Bo Lai ◽  
Yanan Xu ◽  
Cheng Yan
Keyword(s):  
Thermal Conductivity ◽  
Polymer Nanocomposites ◽  
Surface Functionalization

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.

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