Improvement in optical absorption and emission characteristics of polymethyl methacrylate in solution cast polymethyl methacrylate/polyvinyl carbazole polyblends

Abstract

Polymer blends have got considerable attention for their potential optoelectronic and photonic applications due to several advantages such as easy processing, low cost, flexibility, and good mechanical properties. This work reports the structure and optical properties of solution cast binary blends of poly (methyl methacrylate) (PMMA) and poly (vinyl carbazole) (PVK). Here, the position and/or intensity of characteristic FTIR peaks reveal the changes of the structure of PMMA on PVK content while the surface morphology changes from highly smooth for pure PMMA to flaky structured (PVK 5%) and then to agglomerated morphologies for these blends. A red shift in optical absorption edge and decrease in optical transmission with PVK content in PMMA based blends. The emission spectra exhibit intensity escalation by 340 times with respect to PMMA for PVK-15 blends and then decreases with further addition of PVK in these blends. These results are very important for the advent of new optoelectronic functionalities for these polymer blends.

An insight into the role of titanium oxide nanofiller on the structural, optical, electrical, and dielectric characteristics of PS/PVK composite

“…Additionally, PS's phenyl ring shows C-H in-plane bending at 1068 and 1026 cm −1 , with its out-of-plane deformation peak at 541 cm −1 [23,24]. PVK's characteristic absorption bands were at 1332, 1221, 1183, and 723 cm −1 as a result of C-N stretching from vinyl carbazole [19,40], C=N stretching at 1597 cm −1 and C-N bending at 618 cm −1 [19]. Table 1 presents the band assignments for the synthesized samples' FTIR spectra.…”

“…Among the most significant polymers used in industry is polyvinyl carbazole (PVK); it is also a thermoplastic polymer with photoconductive and electroluminescence properties that are widely used in electronic devices and household appliances [18,19]. It is utilized in electrochemical windows, double-layer capacitors, and other products because of its strong tensile strength and superior abrasion resistance [20].…”