Microstructural Parameters of HPMC/PVP Polymer Blends Using Wide Angle X-Ray Technique
DOI:
https://doi.org/10.6000/1929-5995.2012.01.01.4Keywords:
Polymer blends, Crystallite size, Tensile strength, WAXSAbstract
Hydroxypropylemethylecellulose (HPMC) and Polyvinylpyrrolidone (PVP) polymer virgin and blend films were prepared and investigated using wide angle X-ray scattering method. Microstructural parameters like lattice strain (g %), the crystallite size for individual the Bragg’s reflection (hkl) have been computed using line profile analysis and hence by whole pattern fitting method. The X-ray diffraction study reveals that the blending of PVP decreases the crystallanity of HPMC up to 5:4 concentration and then increases. Measured tensile strength decreases, Young’s Modulus decreases, and % elongation increases as the concentration of PVP increases. The surface morphology investigated using scanning electron microscope, shows that the two polymers were miscible in all concentration range.
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