Miscible Transparent Polymethylmethacrylate/Cellulose Acetate Propionate Blend: Optical, Morphological, and Thermomechanical Properties

Abstract

To obtain a high transmittance blend within ultraviolet and visible regions, various transparent samples of ascending percentages of polymethylmethacrylate (PMMA)/cellulose acetate propionate (CAP) were prepared by melt blending using a twin screw extruder. These blends were characterised by ultraviolet-visible spectroscopy, and the curves illustrated that the blending ratio of 10% CAP in PMMA meets the required purpose. The morphological, mechanical, and thermal properties for pure PMMA and the PMMA/CAP 10% blend were investigated using X-ray diffraction, scanning electron microscopy, dynamic mechanical analysis, and thermogravimetric analysis. The results showed that the PMMA/CAP 10% blend has an amorphous structure and low stiffness than pure PMMA. The miscible PMMA/CAP 10% blend exhibited mechanical stability below the glass transition temperature (Tg), with a slight increase in Tg value relative to that of pure PMMA. The study also demonstrated that the intermolecular interaction between blend elements has an effective influence on the physical properties of the blend.

Preparation of Calcium Titanate Nanoparticles with Investigate the Thermal and Electrical Properties by Incorporating Epoxy

“…Figures (5) describe the variation of dielectric loss tangent (tanδ) with frequency in the neat epoxy and the nanocomposites. The electrical conductivity and the charge carriers' relaxation times are dependent on each other under the same electric field setting, or tanδ.…”

“…One of the most researched methods is to incorporate inorganic nanoparticles into the polymer matrix, such as alumina, carbon black, titanium dioxide, silica, and others. Despite having modest nanofiller content, the resulting nanocomposites can enhance thermal, electrical, mechanical, and optical properties [4,5]. These nanocomposites are an alternative to metal-based materials due to having a lot of potential as multifunctional materials in a range of applications, including civil engineering, automotive, aerospace, optoelectronic devices, semiconductor devices, and others [6,7].…”

Fracture resistant, antibiofilm adherent, self-assembled PMMA/ZnO nanoformulations for biomedical applications: physico-chemical and biological perspectives of nano reinforcement

“…36-1451) [34]. Broad peaks seen in the x-ray diffractogram of neat PMMA (figure 2(b)) are a typical characteristic feature of amorphous material and are known as amorphous humps [37]. An increase in intensity for characteristic peaks of ZnO was recorded as wt % ZnO was increased in the PMMA/ZnO nanoformulations (figure 3…”

“…In addition to that, uniformly distributed ZnO NPs acted as stress absorbing sites and prevented crack propagation (figure 9(e′)) and made the nanoformulations tougher and stronger compared to pure PMMA but samples with higher NP weight fractions exhibited sudden and brittle fracture failure and decreased ultimate tensile strength values because at higher loading, NPs agglomerated (figure 9(d)) and acted as defects of micro/ macro-scale dimensions. Crack initiation and propagation were not prevented by these defects, and ultimately fracture failure of the samples resulted (figure 9(e″)) [37,50].…”