Nanodiamond-Triggered Organization in Fibers of PANI Nanocomposites Produced by Chemical and Electrochemical Routes: Structural Features and Functional characterizations

2012 ◽  
Vol 1452 ◽  
Author(s):  
Emanuela Tamburri ◽  
Valeria Guglielmotti ◽  
Silvia Orlanducci ◽  
Maria Letizia Terranova ◽  
Daniele Passeri ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Systematic Study ◽  
Structural Organization ◽  
Structural Features ◽  
Morphological Features ◽  
Polymeric Matrix ◽  
Mechanical And Thermal Properties ◽  
Detonation Nanodiamond ◽  
Polymerization Mechanism

ABSTRACTWe present some recent results of a systematic study regarding polyaniline-based nanocomposites with detonation nanodiamond as guest component. The peculiar properties of such crystalline nanomaterial not only help in improving the mechanical and thermal properties of the host polymeric matrix, but also influence polymerization mechanism, modifying the morphological features of the polymers. Induced by the nanodiamond presence, the final nanocomposites show a prominent arrangement of polymer segments into tubular forms and a subsequent structural organization suitable for many technological applications.

Evaluation of Influence of the Addition Nanofillers on the Mechanical and Thermal Properties Terpolymers Ester-Ether-Amide

2014 ◽  
Vol 59 (1) ◽  
pp. 237-239
Author(s):  
A. Kozłowska ◽  
M. Piatek-Hnat
Keyword(s):  
Mechanical Properties ◽  
Glass Transition ◽  
Thermal Properties ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Thermoplastic Elastomer ◽  
Nanocomposite Materials ◽  
Polymeric Matrix ◽  
Mechanical And Thermal Properties ◽  
Positive Effect

Abstract The results of studies of mechanical and thermal properties of synthesized elastomeric nanocomposites have been presented. An elastomeric multiblock terpoly(ester-b-ether-b-amide)s as polymeric matrix and nanoparticles SiO2 i TiO2 used as fillers. It was shown that the introduction of multiblock thermoplastic elastomer matrix of SiO2 and TiO2 nanoparticles allows to obtain nanocomposite materials with improved mechanical properties compared to the terpolymer before modification. An increase in glass transition temperature, which has a positive effect for the processing of terpolymers.

Study of the Molecular Architecture of Keratin Filaments by Electron Microscopy

1982 ◽  
Vol 40 ◽  
pp. 118-119
Author(s):  
U. Aebi ◽  
P. Rew ◽  
T.-T. Sun
Keyword(s):  
Electron Microscopy ◽  
Structural Organization ◽  
Cell Types ◽  
Structural Features ◽  
Molecular Architecture ◽  
The Past ◽  
Keratin Filaments ◽  
Different Types ◽  
10 Nm Filaments ◽  
Different Cell Types

Various types of intermediate-sized (10-nm) filaments have been found and described in many different cell types during the past few years. Despite the differences in the chemical composition among the different types of filaments, they all yield common structural features: they are usually up to several microns long and have a diameter of 7 to 10 nm; there is evidence that they are made of several 2 to 3.5 nm wide protofilaments which are helically wound around each other; the secondary structure of the polypeptides constituting the filaments is rich in ∞-helix. However a detailed description of their structural organization is lacking to date.

Mechanical and thermal characterization of grafted PP-NCC nanocomposites

2019 ◽  
pp. 089270571987822
Author(s):  
Saud Aldajah ◽  
Mohammad Y Al-Haik ◽  
Waseem Siddique ◽  
Mohammad M Kabir ◽  
Yousef Haik
Keyword(s):  
Thermal Properties ◽  
Interfacial Adhesion ◽  
Thermal Characterization ◽  
Mechanical And Thermal Properties ◽  
Screw Extruder ◽  
Scanning Calorimetry ◽  
Three Point Bending ◽  
Twin Screw ◽  
Thermal Stability Of

This study reveals the enhancement of mechanical and thermal properties of maleic anhydride-grafted polypropylene (PP- g-MA) with the addition of nanocrystalline cellulose (NCC). A nanocomposite was manufactured by blending various percentages of PP, MA, and NCC nanoparticles by means of a twin-screw extruder. The influence of varying the percentages of NCC on the mechanical and thermal behavior of the nanocomposite was studied by performing three-point bending, nanoindentation, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and Fourier-transform infrared (FTIR) spectroscopy tests. The novelty of this study stems on the NCC nanoparticles and their ability to enhance the mechanical and thermal properties of PP. Three-point bending and nanoindentation tests revealed improvement in the mechanical properties in terms of strength, modulus, and hardness of the PP- g-MA nanocomposites as the addition of NCC increased. SEM showed homogeneity between the mixtures which proved the presence of interfacial adhesion between the PP- g-MA incorporated with NCC nanoparticles that was confirmed by the FTIR results. DSC and TGA measurements showed that the thermal stability of the nanocomposites was not compromised due to the addition of the coupling agent and reinforced nanoparticles.

Ta addition effects on the structure, mechanical and thermal properties of sputtered Hf-Ta-C film

2019 ◽  
Vol 45 (12) ◽  
pp. 15596-15602 ◽  
Author(s):  
Xinlei Gu ◽  
Lina Yang ◽  
Xiaorong Ma ◽  
Xuan Dai ◽  
Jia Wang ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Mechanical And Thermal Properties
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