Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and wide-angle X-ray scattering (WAXS) of polypropylene (PP)/cyclic olefin copolymer (COC) blends for qualitative and quantitative analysis

Optical, Structural, and Dielectric Properties of Composites Based on Thermoplastic Polymers of the Polyolefin and Polyurethane Type and BaTiO3 Nanoparticles

“…Complementary information on the vibrational properties of BaTiO 3 , TPU, TPO, and their composites are presented by IR spectroscopy. According to Figure 6, the main IR absorption bands of TPO are located at 787, 1009, 1258, and 2963 cm −1 (Figure 6a); the absorption band of 787 cm −1 can be attributed to the complex vibration mode of CH 2 rock + C-C chain stretching + CH bending [36], and the bands of 1009 and 1258 cm −1 correspond to the -CH 3 rocking vibrational modes and CH bending vibrations, respectively [37]. The last absorption band at 1258 cm −1 can be assigned to the asymmetric stretching vibration modes of the CH 3 -groups [37] and the stretching vibrations of the C-H bonds [32].…”

Biopolymer blended films of poly(butylene succinate)/cyclic olefin copolymer with enhanced mechanical strength for packaging applications

“…The X‐ray diffractograms of polymer films are presented in Figure 2, where the pristine PBS is showing a semicrystalline nature having the specific peaks at 19.5°, 21.5°, and 22.5° which correspond to its (020), (021), and (110) planes, respectively 20 while the neat COC forms an amorphous structure and gives a wide hump at 18.3°. In blended samples, no peak shifting or extra peaks forming was observed; indicating the absence of chemical interactions between the constituent polymers 19 . However, the intensity of PBS peaks was growing inside the polymer blends as its amount was getting increased.…”

“…Furthermore, FTIR spectra of PBS/COC blended films indicate the same bands as that of the pristine polymers. However with the increasing percentage of PBS in blended systems, it was observed that very minor shifts in peaks occurred; indicating only physical intermolecular interactions among the PBS and COC, yet no chemical interactions taken place as neither major peaks shifting happened nor new peaks formation was detected 19 . It also indicates that both of the polymers are miscible up to some extent and can give better properties as a blended system.…”

“…On the other hand, COCs are one of the most studied synthetic biopolymers which are commercially available under various brand names like Zeonex, Zeonor, Arton, Topas, and Apel 14,15 . They have been blended with polyethylene, 16 sulfonated polyethylene terephthalate, 17 polyethylene co‐vinyl acetate, 18 polypropylene, 19 etc. However, to the best of our knowledge, no investigation has yet been conducted on the blending of PBS with COC and the potential of such blends for packaging applications.…”

Excellent, Lightweight and Flexible Electromagnetic Interference Shielding Nanocomposites Based on Polypropylene with MnFe2O4 Spinel Ferrite Nanoparticles and Reduced Graphene Oxide

“…The absorption peak at 1375 cm −1 and 2952 cm −1 were related to symmetric bending vibration of the –CH 3 group and –CH 3 asymmetric stretching vibration. The absorption peak at 1455 cm −1 , 2838 cm −1 and 2917 cm −1 were related to –CH 2 -symmetric bending, –CH 2 -symmetric stretching, and –CH 2 -asymmetric stretching, respectively [ 24 ]. In amalgamation with Raman and FTIR spectroscopy results, the presence of MnFe 2 O 4 spinel ferrite nanoparticles and reduced graphene oxide (RGO) in the polypropylene (PP) were confirmed.…”