Structure-Property Relations in Polymers and Polymer Blends Using X-Ray Diffraction Technique

2017 ◽  
pp. 122-138
Author(s):  
Somashekarappa H ◽  
Manjunath Alabur
Keyword(s):  
Polymer Blends ◽  
In Situ Polymerization ◽  
Profile Analysis ◽  
Bimodal Distribution ◽  
Line Profile Analysis ◽  
Structure Property ◽  
X Ray ◽  
Microstructural Parameters ◽  
X Ray Scattering ◽  
Ray Scattering

This chapter discusses about the synthesis and characterization of polymers, polymer blends, polymer composites, and polymer nanocomposites. Electrically conductive blends polyaniline dodecyl benzene sulphonic acid (Pani:DBSA)/Styrene Butadiene Styrene (SBS) block copolymer have been prepared by melt mixing and using in situ polymerization method. The microstructural parameters were computed using wide angle X-ray scattering (WAXS) and Small angle X-ray scattering (SAXS). Bimodal distribution method has been studied for SBS, DCH32 cotton fiber and Pure Mysore multi-voltine silk (PMS) samples using Line profile analysis.

Fundamentals of Kinematical X-Ray Scattering Theory

2014 ◽  
pp. 1-14
Keyword(s):  
Scattering Theory ◽  
Profile Analysis ◽  
Reciprocal Lattice ◽  
Line Profile Analysis ◽  
X Ray ◽  
X Ray Scattering ◽  
Basic Concepts ◽  
Lattice Planes ◽  
The Relationship ◽  
Ray Scattering

The broadening of X-ray line profiles is usually described by the kinematical scattering theory. In this chapter, the basic concepts and equations of the kinematical X-ray scattering are presented in order to better understand the theory of line profile analysis. The correlation between the crystal structure and the diffracted intensity distribution is shown. The scattering angles of the diffracted peak maxima are given by the Ewald construction in the reciprocal space. The correspondence between the reciprocal lattice vectors and the lattice planes is also presented, and the relationship between the scattering angle and the lattice plane spacing is given by Bragg’s law.

scholarly journals Investigations on Microstructural and Layer Disorder Parameters of Na-Montmorillonite-Glycine Intercalation Compounds

2012 ◽  
Vol 60 (1) ◽  
pp. 25-29 ◽  
Author(s):  
Adnan Hossain Khan ◽  
Parimal Bala ◽  
AFM Mustafizur Rahman ◽  
Mohammad Nurnabi
Keyword(s):  
Crystallite Size ◽  
Chain Length ◽  
Line Profile ◽  
Profile Analysis ◽  
Interlayer Spacing ◽  
Line Profile Analysis ◽  
X Ray ◽  
Microstructural Parameters ◽  
Silicate Layers ◽  
Layer Disorder

Glycine-Montmorillonite (Gly-MMT) composite has been synthesized through intercalation process using Na-Montmorillonite (Na- MMT) and glycine ethylester hydrochloride. Gly-MMT was employed for the synthesis of dipeptide (Gly-Gly-MMT). Microstructural parameters such as crystallite size, r.m.s. strain (<e2>1/2) and layer disorder parameters such as variation of interlayer spacing (g) and proportion of planes affected by such defects (?) of the samples have been calculated by X-ray line profile analysis. In comparison to Na-MMT the basal spacings (d001) of Gly-MMT and Gly-Gly-MMT were reduced by 2.4Å and 1.8Å respectively. The value of d001 of Gly-Gly-MMT (13.3 Å) suggests the monolayer orientation of dipeptide into interlayer spaces. It is also suggested that more homogeneity in the stacking of silicate layers is attained in Gly-Gly-MMT due to the increased chain length of the dipeptide and orientation in monolayer style.DOI: http://dx.doi.org/10.3329/dujs.v60i1.10331Dhaka Univ. J. Sci. 60(1): 25-29, 2012 (January)

Synchrotron Small-Angle X-ray Scattering Studies on Phase Separation and Crystallization of Associated Polymer Blends

1999 ◽  
Vol 32 (5) ◽  
pp. 1554-1558 ◽  
Author(s):  
Katsuhiro Inomata ◽  
Li-Zhi Liu ◽  
Takuhei Nose ◽  
Benjamin Chu
Keyword(s):  
Phase Separation ◽  
Polymer Blends ◽  
Small Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Microstructural parameters and layer disorder accompanying dehydration transformation in Na-montmorillonite

2000 ◽  
Vol 215 (4) ◽  
Author(s):  
S.K. Srivastava ◽  
P. Bala ◽  
B.K. Samantaray ◽  
Hartmut Haeuseler
Keyword(s):  
Crystallite Size ◽  
Structural Changes ◽  
Profile Analysis ◽  
Thermal Transformation ◽  
Initial Slope ◽  
Line Profile Analysis ◽  
Line Profiles ◽  
X Ray ◽  
Microstructural Parameters ◽  
Layer Disorder

Structural changes accompanying thermal transformation in Na-montmorillonite samples up to a temperature of 500°C have been investigated by X-ray line profile analysis. The method of Fourier initial slope and variance analysis of X-ray line profiles have been used to calculate the different microstructural parameters like crystallite size, r.m.s. strain (<e

X-ray scattering of non-graphitic carbon: an improved method of evaluation

2002 ◽  
Vol 35 (5) ◽  
pp. 624-633 ◽  
Author(s):  
Wilhelm Ruland ◽  
Bernd Smarsly
Keyword(s):  
Profile Analysis ◽  
Structural Parameters ◽  
Wide Angle ◽  
Line Profiles ◽  
Improved Method ◽  
X Ray ◽  
X Ray Scattering ◽  
Fitting Procedures ◽  
Method Of Evaluation ◽  
Ray Scattering

The wide-angle X-ray scattering (WAXS) of non-graphitic carbons shows relatively broad and diffuse interference maxima. In most cases, the corresponding line profiles cannot be separated unambiguously, so that an evaluation using profile analysis is difficult. In these cases, fitting procedures for the total scattering curve are more appropriate. This requires theoretical expressions for all interference maxima with a sufficient number of relevant structural parameters to ensure an acceptable fit. In this paper, such expressions are presented for the (hk) lines (intralayer scattering) and the (00l) lines (interlayer scattering), and the application of these expressions to the evaluation of selected WAXS curves is described. Furthermore, the effects of thermal motion, preferred orientation and Compton scattering are discussed.

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