scholarly journals Evolution of microstructure, strain and physical properties in oxide nanocomposite films

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Aiping Chen ◽  
Marcus Weigand ◽  
Zhenxing Bi ◽  
Wenrui Zhang ◽  
Xuejie Lü ◽  
...  
Keyword(s):  
Physical Properties ◽  
Nanocomposite Films ◽  
Evolution Of Microstructure

Structures and physical properties of graphene/PVDF nanocomposite films prepared by solution-mixing and melt-compression

2013 ◽  
Vol 14 (8) ◽  
pp. 1332-1338 ◽  
Author(s):  
Jin Woo Jang ◽  
Byung Gil Min ◽  
Jeong Hyun Yeum ◽  
Young Gyu Jeong
Keyword(s):  
Physical Properties ◽  
Nanocomposite Films

Physical properties of poly lactic acid/clay nanocomposite films: Effect of filler content and annealing treatment

2013 ◽  
Vol 131 (2) ◽  
pp. n/a-n/a ◽  
Author(s):  
Pietro Russo ◽  
Sara Cammarano ◽  
Emiliano Bilotti ◽  
Ton Peijs ◽  
Pierfrancesco Cerruti ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Physical Properties ◽  
Filler Content ◽  
Annealing Treatment ◽  
Nanocomposite Films ◽  
Poly Lactic Acid

Comparing of melt blending and solution mixing methods on the physical properties of thermoplastic polyurethane/organoclay nanocomposite films

2015 ◽  
Vol 30 (7) ◽  
pp. 950-970 ◽  
Author(s):  
Nevra Ercan ◽  
Ali Durmus ◽  
Ahmet Kaşgöz
Keyword(s):  
Electron Microscopy ◽  
Physical Properties ◽  
Thermoplastic Polyurethane ◽  
Low Frequency ◽  
Water Vapor Permeability ◽  
Nanocomposite Films ◽  
Vapor Permeability ◽  
Nonlinear Creep ◽  
Melt Blending ◽  
Burger Model

In this study, microstructural features and physical properties of thermoplastic polyurethane (TPU)/organoclay nanocomposites films prepared via melt blending (MB) and solution mixing (SM) methods were investigated in detail. Amount of organoclay into the composition varied in the range of 2 and 8 wt%. Microstructural properties of samples were characterized by X-ray diffraction, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) methods. It was found that the organoclay layers exhibited better dispersion, exfoliated, and semi-exfoliated structure in the MB samples than the SM counterparts. Viscoelastic properties of samples were also studied by measuring the rheological behaviors of bulk samples in an oscillatory rheometer in the melt state and measuring of the time-dependent nonlinear creep behaviors of film samples in a dynamic mechanical analyzer in the solid state. Gas and water vapor permeability (WVP) values of nanocomposite films were measured. Based on the melt rheology measurements, it was found that the MB samples showed characteristic solid-like behavior and higher improvement in storage modulus at low-frequency region. Creep behaviors of samples were also quantified with the four-element Burger model. It was found that the introducing of organoclay into the composition via MB method yielded more improvement in the creep resistance, gas, and WVP values of films than the SM counterparts, possibly due to the better dispersion of organoclay layers into the TPU structure. Based on the improvement in permeability and mechanical properties of the samples and also SEM and TEM observations, the average aspect ratio value ( Af) of organoclay stacks was estimated in the range of 15–20 for the MB samples.

Residual stress behavior and physical properties of transparent polyimide/surface-modified CaCO3 nanocomposite films

2014 ◽  
Vol 22 (6) ◽  
pp. 669-677 ◽  
Author(s):  
Ki-Ho Nam ◽  
Jongchul Seo ◽  
Kwangwon Seo ◽  
Wonbong Jang ◽  
Haksoo Han
Keyword(s):  
Residual Stress ◽  
Physical Properties ◽  
Nanocomposite Films ◽  
Stress Behavior ◽  
Surface Modified
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