P(VDF-TrFE)-layered silicate nanocomposites. Part 1. X-ray scattering and thermal analysis studies

Polymer ◽  
2004 ◽  
Vol 45 (6) ◽  
pp. 1923-1932 ◽  
Author(s):  
Peggy Cebe ◽  
James Runt
Keyword(s):  
Thermal Analysis ◽  
Layered Silicate ◽  
X Ray ◽  
X Ray Scattering ◽  
Silicate Nanocomposites ◽  
Ray Scattering

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.

Morphology of Layered Silicate− (NanoClay−) Polymer Nanocomposites by Electron Tomography and Small-Angle X-ray Scattering

2008 ◽  
Vol 41 (6) ◽  
pp. 2135-2143 ◽  
Author(s):  
Lawrence F. Drummy ◽  
Y. C. Wang ◽  
Remco Schoenmakers ◽  
Keith May ◽  
Mike Jackson ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
Small Angle ◽  
Electron Tomography ◽  
Layered Silicate ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Nylon 6 reinforced with acrylic polymer nanoparticles. Thermal properties and nano structure

2011 ◽  
Vol 1312 ◽  
Author(s):  
Estefania Huitron-Rattinger ◽  
Bonifacio Alvarado-Tenorio ◽  
Angel Romo-Uribe
Keyword(s):  
Thermal Analysis ◽  
Thermal Properties ◽  
Small Angle ◽  
Nylon 6 ◽  
Polymer Nanoparticles ◽  
Degree Of Crystallinity ◽  
Acrylic Polymer ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

ABSTRACTThe correlation of thermal properties and nanostructure of nylon 6 (denoted PA6) reinforced with polymer nanoparticles (denoted PNP, size~8 nm) has been investigated. PNPs are highly crosslinked acrylic-based polymers synthesized by the Rohm and Haas Co. PNPs and those grafted with maleic anhydride (denoted PNP-g-MA) were each one dispersed into a commercial PA 6 matrix by melt extrusion, at a concentration of 3 wt%. Thermal analysis showed that the PNPs increased the thermal stability of PA6 and reduced the melting and crystallization temperatures as well as the enthalpy. Small-angle light scattering showed that the PNPs crystallize into a spherulitic morphology, typical of PA6. Isothermal crystallization studies showed that the PNPs act as nucleating agents, accelerating the rate of crystallization. Wide-angle X-ray scattering showed that the composites crystallize in the α-form, and the PNPs reduced the degree of crystallinity, in agreement with thermal analysis results. The smaller degree of crystallinity was also reflected in the long range spacing, it was also reduced by the presence of the PNPs as measured directly by small-angle X-ray scattering.

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