Study of the degree of crystallinity in eudragit/poly(methyl methacrylate) polyblends by X‐ray diffraction

Abstract

Plaques of blends of Eudragit RL 100 (EU) and poly(methyl methacrylate) (PMMA) with different weight-per-weight ratios were prepared by compression molding at 150°C. The X-ray diffraction profiles of the blends were studied and compared, and the interplanar distance, crystallite size, and crystallinity were computed for various peaks. The Eu/PMMA blend with a 70:30 (w/w) ratio had the maximum crystallinity.

Radiation induced crosslinking effect on semi - interpenetrating polymer networks of poly(vinyl alcohol)

“…The height (CrH) of the main peak above its adjacent minimum represents the crystallinity of the sample and the width (AmW) of the peak at this adjacent minimum is considered to represent the amorphousness of the sample [29]. The crystallinity CrI, is calculated from the Equation (1): (1) where t is the scale factor relating the height of CrH to full scale (total blackness).…”

Poly(ethylene glycol)/acrylic polymer blends for latent heat thermal energy storage

“…PMMA and Eudragits belong to a group of commercially available acrylic resins 18, 19. Acrylic resins are thermoplastic polymers used to produce paints, synthetic rubbers, and lightweight plastics.…”

Structural, morphological and micromechanical studies on fly ash reinforced PMMA composites

“…The sol-gel method (Celik et al 2008;Chand and Vashishtha 2008;Bajpai et al 2002Bajpai et al , 2003aGupta et al 2007;Ramrakhiani et al 2005) has been utilized to prepare the composite films of pure Poly(methyl methacrylate) and fly ash based composite films, dimethylformamide has been taken as solvent. Fly ash and Poly(methyl methacrylate) solution were mixed with the help of an electric motor operating at 200 rpm in air atmosphere at 60°C for 6 h. A Known quantity of the homogeneous solution poured in glass mould of size 4 9 4 cm 2 and kept in an electronic oven at 110°C temperature for 3 h. The oven was then switched off and the glass mould along with the solution was given sufficient time to cool down (nearly 24 h).…”

“…The X-ray diffraction technique is the most common technique used for the analysis of polymer system and analysis of material (Celik et al 2008;Dubey et al 2008;Kumar et al 2009;Guo and Rohatgi 1998;Balamurugan et al 2004;Bartram 1967;Ramrakhiani et al 2005; Rizwan and Din 2004; Ma et al 2009;Ron 2000;Statton 1967). The X-ray diffraction studies of prepared pure Poly(methyl methacrylate) polymer and fly ash reinforced Poly(methyl methacrylate) composites were carried out with the Bruker D8 Advance X-ray diffractometer, X-ray powder diffractometer with CuKa radiation (wave length 0.15405 nm) performed at 40 kV and 40 mA.…”