title: Complexation of amidated pectin with poly(itaconic acid) as a polycarboxylic polymer model compound.
abstract: Complexes based on amidated pectin (AP) and poly(itaconic acid) (PIA) were prepared by casting films from solutions of AP and PIA in different ratios with the pectin amount ranging from 10% to 90% by mass. The complexes were investigated by elemental analysis, Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetry (TG). In all investigated ratios of AP/PIA glassy transparent films with a uniform structure were obtained. The results of elemental analysis confirmed the composition of the complexes, and FTIR spectroscopy has shown carboxylic and amide peak shifting, indicating complex formation between AP and PIA. Comparison of thermograms of AP/PIA films with different ratios of AP indicated that the increase of the amount of AP increases the thermal stability of the films by retarding the onset of the main degradation processes.
authors.affiliation: Vinca Institute of Nuclear Sciences, University of Belgrade, PO Box 522, Belgrade RS-11001, Serbia. anesic@vin.bg.ac.rs
authors.forename: Aleksandra R
authors.initials: AR
authors.lastname: Nesic
authors.forename: Snezana S
authors.initials: SS
authors.lastname: Trifunovic
authors.forename: Aleksandar S
authors.initials: AS
authors.lastname: Grujic
authors.forename: Sava J
authors.initials: SJ
authors.lastname: Velickovic
authors.forename: Dusan G
authors.initials: DG
authors.lastname: Antonovic
mesh_terms: D006860:Hydrogen Bonding; D046911:Macromolecular Substances / Q000737:chemistry; D008567:Membranes, Artificial; D008855:Microscopy, Electron, Scanning; D010368:Pectins / Q000737:chemistry*; D011095:Polyethylenes / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013386:Succinates / Q000737:chemistry*; D013818:Thermogravimetry
chemical_list: D046911:Macromolecular Substances; D008567:Membranes, Artificial; D011095:Polyethylenes; D013386:Succinates; D010368:Pectins