Intercalation Characteristics of Montmorillonite Modified with Poly(2-n-alkyl-2-oxazoline)s

• DOI: 10.1021/acs.macromol.4c00291
• Publication Date: 2024-08-27T06:30:26Z
• Authors: Marek Pribus; Luboš Jankovič; Valériá Bizovská ...; Martin Barlog; Jana Madejová
• Keywords: Oxazoline

Poly(2-oxazoline)s (POxs) are nonionic polymers suitable for different bioapplications. Composites of montmorillonite (Mnt) and poly(2-methyl-2-oxazoline) (PMeOx), poly(2-ethyl-2-oxazoline) (PEtOx), poly(2-propyl-2-oxazoline) (PPrOx) were prepared the first time, effect polymer loadings side chain length on adsorption structural characteristics was examined. Adsorption isotherms revealed a sharp increase in at low loadings. When surface Mnt saturated with POxs, plateau not changing loading appeared. The highest capacity found PMeOx (4.15 mmol g–1) followed by PEtOx (3.86 PPrOx (3.14 g–1). interlayer space gradually increased increasing POxs content from 0.5 to 6.0 g–1. No further changes observed above intensities bands related vibrations C═O CH3 CH2 groups amounts polymers. A slight shift band position reflected transition disordered (cis conformers) more ordered (trans arrangement.