Structural, Optical, Thermal, Morphological and Electrical Studies of PEMA/PMMA Blend Filled with CoCl 2 and LiBr As Mix
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https://doi.org/10.1007/s11664-020-08342-0 2020 The Minerals, Metals & Materials Society
Structural, Optical, Thermal, Morphological and Electrical Studies of PEMA/PMMA Blend Filled with CoCl2 and LiBr As Mixed Filler E.M. ABDELRAZEK,1,2 G.M. ASNAG,2,3,6 A.H. ORABY,2 A.M. ABDELGHANY,4 A.M. ALSHEHARI,2,3 and MOHAMMED S. GUMAAN5 1.—Department of Physics, Faculty of Science at Al-Ula, Taibah University, Madinah Munawwarah, Saudi Arabia. 2.—Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt. 3.—Physics Department, Faculty of Education, Hajjah University, Hajjah, Yemen. 4.—Spectroscopy Department, Physics Division, National Research Center, 33 ElBehouth St., Dokki, Cairo, Egypt. 5.—Department of Biomedical Engineering, University of Science and Technology-Yemen, Sana’a, Yemen. 6.—e-mail: [email protected]
Structural, optical, thermal, morphological and electrical features of pure blend and composites based on poly(ethyl methacralyte) (PEMA) and poly (methyl methacrylate) (PMMA) filled with different contents of cobalt chloride (CoCl2) and lithium bromide (LiBr) were investigated. The composite samples at various concentrations of mixed filler were prepared using the casting method. X-ray diffraction (XRD) showed an amorphous feature of the pure blend films. Fourier transform infrared (FT-IR) spectra depicted that components of the blend, PEMA and PMMA polymers, are miscible. Ultraviolet and visible (UV–Vis.) measurement revealed that the values of the optical energy gap are decreasing with increasing mixed filler concentrations. Scanning electron microscopy (SEM) after adding the mixed filler shows small granules and bright spots on the surface of the blend. Differential scanning calorimetry (DSC) results show that adding mixed filler to polymeric solution enhances their thermal stability. The plot of DC conductivity versus temperature shows the Arrhenius model (linear variation). Key words: PEMA, PMMA, XRD, FT-IR, UV–Vis., SEM, DSC, DC conductivity
INTRODUCTION Recently, there has been increasing interest in the field of polymers embedded with metals ions due to their potential use in electro-optical applications, solid state sensors, and composite structures.1,2 The addition of metal ions causes oxidation reduction changes during the thermal degradation of polymers.2 Polymer blends have emerged as a popular method to develop polymer materials, in which at least two polymers are blended together to create a
(Received September 5, 2019; accepted July 17, 2020)
new material. Important advantages of blending are that the features of the final product can be changed to the usage requirements.3,4 PEMA has high surface resistance, excellent chemical resistance, and offers high optical transparency, good mechanical strength and elasticity. PEMA is appropriate as a host polymer for ionic conduction.5,6 Polymethyl methacrylate (PMMA), also known as acrylic, is a transparent plastic polymer with good optical properties. It is a rigid thermoplastic polymer widely used in different industrial appli
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