Viscoelastic behavior and electrical properties of flexible nanofiber filled polymer nanocomposites. Influence of processing conditions

2007 ◽  
Vol 67 (5) ◽  
pp. 829-839 ◽  
Author(s):  
Florent Dalmas ◽  
Jean-Yves Cavaillé ◽  
Catherine Gauthier ◽  
Laurent Chazeau ◽  
Rémy Dendievel
Keyword(s):  
Electrical Properties ◽  
Polymer Nanocomposites ◽  
Viscoelastic Behavior ◽  
Processing Conditions ◽  
Filled Polymer

CRYSTALLIZATION OF DISPERSIVELY FILLED POLYMER NANOCOMPOSITES

2019 ◽  
Vol 10 (4) ◽  
pp. 363-371
Author(s):  
Georgii V. Kozlov ◽  
Yulia N. Karnet ◽  
I. V. Dolbin ◽  
A. N. Vlasov
Keyword(s):  
Polymer Nanocomposites ◽  
Filled Polymer

EFFECT OF PROCESSING CONDITIONS ON ELECTRICAL PROPERTIES OF CaCu3Ti4O12 CERAMICS

2010 ◽  
Vol 24 (12) ◽  
pp. 1267-1273 ◽  
Author(s):  
RAMAN KASHYAP ◽  
TANUJ DHAWAN ◽  
PRIKSHIT GAUTAM ◽  
O. P. THAKUR ◽  
N. C. MEHRA ◽  
...  
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Nonlinear Behavior ◽  
Ferroelectric Hysteresis Loop ◽  
Processing Conditions ◽  
Reaction Route ◽  
Sintering Time ◽  
Maximum Value ◽  
Solid State Reaction Route ◽  
Ferroelectric Hysteresis

CaCu 3 Ti 4 O 12 ( CCTO ) ceramics were prepared by the solid-state reaction route. Effect of sintering time was studied on the polarization (P) versus electric field (E) behavior. Unlike conventional ferroelectric hysteresis loop, PE hysteresis behavior in CCTO ceramics was observed to exhibit ferroelectric-like loop where polarization does not saturate but gives a maximum value. Remnant polarization and maximum polarization was observed to increase with sintering time. Current (I)–voltage (V) characteristics shows a nonlinear behavior making them useful for varistor applications. Coefficient of non-linearity (α) is also found to depend on sintering duration.

Recent Advances in Polymer-Based Nanocomposites: A Brief Review

2021 ◽  
Vol 13 ◽  
Author(s):  
S. K. Parida
Keyword(s):  
Electrical Properties ◽  
Polymer Nanocomposites ◽  
Polymer Matrix ◽  
Polymer Nanocomposite ◽  
Review Article ◽  
Nanosized Particles ◽  
Mechanical And Electrical Properties ◽  
Potential Applications ◽  
Manufacturing Techniques ◽  
Host Polymer

: This presented review article is constructed to be an extensive source for polymer nanocomposite researchers covering the relation of structure with property, manufacturing techniques, and potential applications when a small number of nanosized particles are added to a host polymer matrix. The exceptional structural, mechanical, and electrical properties of polymer nanocomposites after the addition of inorganic solid nanoparticles are elucidated by the large surface area of doped nanoparticles that interact with host polymer matrices. Due to the generation of ideas, the conventional methods of preparation of polymer nanocomposites are made more interesting. Hence, this brief review presents a sketch of different synthesis techniques, characterization, applications, and safety concerns for polymer nanocomposites.

scholarly journals Intra-Cycle Elastic Nonlinearity of Nitrogen-Doped Carbon Nanotube/Polymer Nanocomposites under Medium Amplitude Oscillatory Shear (MAOS) Flow

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1257 ◽  
Author(s):  
Milad Kamkar ◽  
Soheil Sadeghi ◽  
Mohammad Arjmand ◽  
Ehsan Aliabadian ◽  
Uttandaraman Sundararaj
Keyword(s):  
Rheological Properties ◽  
Polymer Nanocomposites ◽  
Polyvinylidene Fluoride ◽  
Viscoelastic Behavior ◽  
Oscillatory Shear ◽  
Dispersed Systems ◽  
Nitrogen Doped ◽  
Elastic Nonlinearity ◽  
Medium Amplitude Oscillatory Shear ◽  
Nitrogen Doped Carbon

This study seeks to unravel the effect of carbon nanotube’s physical and chemical features on the final electrical and rheological properties of polymer nanocomposites thereof. Nitrogen-doped carbon nanotubes (N-CNTs) were synthesized over two different types of catalysts, i.e., Fe and Ni, employing chemical vapor deposition. Utilizing this technique, we were able to synthesize N-CNTs with significantly different structures. As a result, remarkable differences in the network structure of the nanotubes were observed upon mixing the N-CNTs in a polyvinylidene fluoride (PVDF) matrix, which, in turn, led to drastically different electrical and rheological properties. For instance, no enhancement in the electrical conductivity of poorly-dispersed (N-CNT)Ni/PVDF samples was observed even at high nanotube concentrations, whereas (N-CNT)Fe/PVDF nanocomposites exhibited an insulative behavior at 1.0 wt%, a semi-conductive behavior at 2.0 wt%, and a conductive behavior at 2.7 wt%. In terms of rheology, the most substantial differences in the viscoelastic behavior of the systems were distinguishable in the medium amplitude oscillatory shear (MAOS) region. The stress decomposition method combined with the evaluation of the elastic and viscous third-order Chebyshev coefficients revealed a strong intra-cycle elastic nonlinearity in the MAOS region for the poorly-dispersed systems in small frequencies; however, the well-dispersed systems showed no intra-cycle nonlinearity in the MAOS region. It was shown that the MAOS elastic nonlinearity of poorly-dispersed systems stems from the confinement of N-CNT domains between the rheometer’s plates for small gap sizes comparable with the size of the agglomerates. Moreover, the intra-cycle elastic nonlinearity of poorly-dispersed systems is frequency-dependent and vanished at higher frequencies. The correlation between the microstructure and viscoelastic properties under large shear deformations provides further guidance for the fabrication of high-performance 3D-printed electrically conductive nanocomposites with precisely controllable final properties for engineering applications.

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