Influence of Cerium oxide on the structural aspects of soda-lime aluminosilicate glasses synthesized by sol-gel route

Preparation and properties of vermiculite modified by triphenylbutylphosphonium bromide and PBAT composite film

“…As shown in Figure 6, a typical PBAT waveform can be seen in the pure PBAT IR spectrum, which has peaks near 3000 cm À1 for the vibrational absorption peaks of CH 3 and CH 2, 25,26 1710 cm À1 for the distinct carbonyl absorption vibration peak, 27,28 1410 cm À1 for the bending vibrational absorption peak of O CH 2 , 1270 cm À1 for the C O bond in the ester bond, 29 and 1100 cm À1 for the band attributed to the C O left-right symmetrical stretching vibration, 30 corresponding to PBAT aliphatic fraction; 1460 cm À1 is the in-plane bending vibration absorption peak of the benzene ring CH 2 , the in-plane bending vibration absorption peak of the benzene ring of C H is at 1020, 873, and 726 cm À1 are the out-of-plane bending vibration absorption peaks of the benzene ring of C H, the out-of-plane bending vibration absorption peak of C H in the benzene ring generally occurs at 830 cm À1 , but the absorption at 726 cm À1 is spectrally characteristic due to the conjugation of C O with the benzene ring and can be used as a marker to identify PBAT, the above corresponds to the aromatic fraction of PBAT, 31 no new waveforms appeared in the P4@VMT/PBAT composite film, and the bending vibrational absorption peaks of Si O Si appeared only at 445 cm À1 . 32…”