Optical Properties of Poly(2-(5-bromo benzofuran-2-yl)-2-oxoethyl methacrylate)/Organoclay Nanocomposites

Abstract

Novel nanocomposites of benzofuran-containing polymer poly(2-(5-bromo benzofuran-2-yl)-2-oxoethyl methacrylate) with different contents of organoclay were prepared and characterized with FTIR, XRD and SEM techniques. The thermal decomposition temperature of poly (BOEMA)/organoclay nanocomposites is higher than that of pure poly(BOEMA) about 5-14 • C at 10 % weight loss. The optical characterization was tested with a UV-VIS spectrophotometer. Transmittances of nanocomposites decreased to lower values by organoclay loading. Dispersion parameters such as steepness parameter, single-oscillator parameter, average oscillator position and strength, and moments of the imaginary part of the optical spectrum were changed as a function of organoclay nanofiller. As the organoclay content increased to 5 % in the polymer matrix, the existence of wide-band tails increased to 1.30 eV whereas the optical energy gap decreased to 2.92 eV. Analysis reveals that the type of transition is the indirectly allowed one.

Blending of Poly(methyl methacrylate) with Poly(1,3-diphenyl-1H-pyrazol-5-yl methacrylate): Investigation of its Optical Properties

“…The optical properties of polymer molecules are quite remarkable in addition to the many physical and chemical properties of these molecules such as thermal, mechanical, rheological, dielectric, etc. Among the optical properties of polymers, some parameters such as transmittance, reflectance, absorbance, refractive index, optical band energy, and dispersion parameters are widely studied [7][8][9]. These properties are highly dependent on the chemical structure of the polymer or copolymer, the formulation of the polymeric material (colorants, fillers, plasticizers, stabilizers and other additives), crystallinity and amorphous structure of the polymer.…”

Preparation and Characterization of Magnesium/Aluminium Layered Double Hydroxide as Filler in Low-Density Polyethylene Composite

“…With latest understanding of the fundamental about LDH, this layered material, which commonly consists of approximately 10um-size multilayer stack (Gianellis, 1996), can be separated into individual nano-layer, hence increasing the surface area for interaction with polymer matrixes. The introduction of nanoparticle in polymer composites increased in terms of optical (Loste et al, 2019), thermal (Kurt and Koca, 2015), mechanical (Bek & Jeon, 2010) and permeability (Ramesh and Punithamoorthy, 2019) properties that must give a variety of applications in many fields. However, LDH is hydrophilic and not compatible with an organic polymer resulted in the phase-separated and agglomeration of clay platelets or known as conventional polymer-clay composites.…”