Analysis of viscoelastic behavior and dynamic mechanical relaxation of copolyester based layered silicate nanocomposites using Havriliak-Negami model

2004 ◽  
Vol 42 (14) ◽  
pp. 2657-2666 ◽  
Author(s):  
Rajendra A. Kalgaonkar ◽  
Somnath Nandi ◽  
Sanjeev S. Tambe ◽  
Jyoti P. Jog
Keyword(s):  
Viscoelastic Behavior ◽  
Layered Silicate ◽  
Mechanical Relaxation ◽  
Dynamic Mechanical ◽  
Silicate Nanocomposites

scholarly journals The effect of matrix morphology on dynamic-mechanical properties of polypropylene/layered silicate nanocomposites

2017 ◽  
Vol 36 (2) ◽  
pp. 251
Author(s):  
Gordana Bogoeva-Gaceva ◽  
Lujleta Raka ◽  
Andrea Sorrentino
Keyword(s):  
Mechanical Response ◽  
Viscoelastic Behavior ◽  
Layered Silicate ◽  
Clay Content ◽  
Dynamic Mechanical Properties ◽  
Scanning Calorimetry ◽  
Slow Cooling ◽  
Dynamic Mechanical ◽  
Melting Temperatures ◽  
Matrix Morphology

In this work, the influence on the morphology and viscoelastic behavior of polypropylene/clay nanocomposites of clay, in combination with different crystallization rates applied in compression molding, is reported. By deconvolution of differential scanning calorimetry (DSC) melting endotherms, it was found that the slowly cooled samples had slightly higher melting temperatures, and the crystal dimensions decreased progressively with the clay content; while, in contrast, the presence of clay particles had no influence on the crystal dimensions in fast-cooled samples. Dynamic mechanical thermal analysis (DMTA) has shown that above the glass transition temperature, nanocomposites obtained by slow cooling exhibited better mechanical response compared to the fast-cooled samples. The value of dynamic modulus E’ of slow-cooled samples increased by ~55 % with addition of only 1 wt% clay, which was attributed to the better reinforcing effect achieved during prolonged time of crystallization.  

Dynamic mechanical and thermal properties of polylactide-layered silicate nanocomposites

2013 ◽  
Vol 27 (5) ◽  
pp. 699-716 ◽  
Author(s):  
Aswini K Mohapatra ◽  
Smita Mohanty ◽  
Sanjay K Nayak
Keyword(s):  
Thermal Properties ◽  
Layered Silicate ◽  
Mechanical And Thermal Properties ◽  
Dynamic Mechanical ◽  
Silicate Nanocomposites

Dynamic and viscoelastic behavior of natural rubber/layered silicate nanocomposites obtained by melt blending

2007 ◽  
Vol 47 (10) ◽  
pp. 1650-1657 ◽  
Author(s):  
G. Ramorino ◽  
F. Bignotti ◽  
L. Conzatti ◽  
T. Ricco
Keyword(s):  
Natural Rubber ◽  
Viscoelastic Behavior ◽  
Layered Silicate ◽  
Melt Blending ◽  
Silicate Nanocomposites

Thermally-cured and e-beam-cured epoxy layered-Silicate nanocomposites

2003 ◽  
Vol 49 (6) ◽  
pp. 473-480 ◽  
Author(s):  
Chenggang Chen ◽  
David Curliss
Keyword(s):  
Layered Silicate ◽  
Silicate Nanocomposites

Influence of melt-blending conditions on structural, rheological, and interfacial properties of polyamide-12 layered silicate nanocomposites

2006 ◽  
Vol 46 (8) ◽  
pp. 986-994 ◽  
Author(s):  
Pascal Médéric ◽  
Tolotrahasina Razafinimaro ◽  
Thierry Aubry
Keyword(s):  
Layered Silicate ◽  
Interfacial Properties ◽  
Melt Blending ◽  
Polyamide 12 ◽  
Silicate Nanocomposites

Polymer/layered silicate nanocomposites: a review from preparation to processing

2003 ◽  
Vol 28 (11) ◽  
pp. 1539-1641 ◽  
Author(s):  
Suprakas Sinha Ray ◽  
Masami Okamoto
Keyword(s):  
Layered Silicate ◽  
Silicate Nanocomposites

THE STRUCTURAL DEVELOPMENT OF NYLON6/LAYERED SILICATE NANOCOMPOSITE DURING ZONE-DRAWING

2006 ◽  
Vol 20 (25n27) ◽  
pp. 4577-4582
Author(s):  
SUNG SOO HAN ◽  
YANG-WHAN CHO ◽  
SOO-YOUNG PARK
Keyword(s):  
Thermal Analysis ◽  
Dynamic Mechanical Thermal Analysis ◽  
Crystalline Phase ◽  
Layered Silicate ◽  
Phase Region ◽  
Structural Development ◽  
X Ray ◽  
Dynamic Mechanical ◽  
X Ray Scattering ◽  
Degree Of Orientation

The structural development of nylon6/layered silicate nanocomposite during zone-drawing was studied using X-ray scattering and dynamic mechanical thermal analysis. The γ form, which was favored in the pressed film, was converted into the α form during zone-drawing. The newly developed α form, during zone-drawing, has a better orientation than the existing γ form, thus supporting the claim that the α form crystallizes away from the polymer-silicate inter-phase region during drawing. The degree of orientation of the layered silicate, projected along the TD direction, increases with the increase of the draw ratio, suggesting that the layered silicate has become straighter during zone-drawing, although the layered silicate within the zone-drawn film buckled perpendicular to the draw direction. The β transition of the dynamic mechanical thermal analysis is independent of the crystalline phase, although the α transition is strongly dependent upon the crystalline phase. This can be explained by the free volume that exists in the inter-phase between the γ lamellar and the layered silicate.

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