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001-es BibID:	BIBFORM116326
035-os BibID:	(cikkazonosító)127694 (Scopus)85176460106 (WOS)001112357100001 (Pubmed)37898248
Első szerző:	Pregi Emese
Cím:	Effect of competitive interactions on the structure and properties of blends prepared from an industrial lignosulfonate polymer / Emese Pregi, Jan Blasius, Dáavid Kun, Oldamur Hollóczki, Béla Pukánszky
Dátum:	2024
ISSN:	0141-8130
Megjegyzések:	To explore the possibility of applying lignin in practice, an industrial lignosulfonate (0?50 vol%) was blended with four ionomers. The concentrations of carboxyl and carboxylate groups were systematically varied in the ethylene-acrylic acid copolymers to study the competition of hydrogen and ionic bonds forming between the components. The mechanical properties of the blends were determined by tensile testing. The structure was investigated by scanning electron microscopy, while deformation and failure processes were studied by acoustic emission measurements and microscopy. Interfacial interactions were quantitatively characterized by analyzing local deformation processes and by evaluating the composition dependence of the tensile strength using appropriate models. Molecular dynamics simulations indicated that carboxylate groups preferably form clusters in the ionomer phase, consequently, the increasing degree of neutralization results in ionomers with more and more self-interactions of components deteriorating ionomer-lignin interactions. The novel combination of experiments, modeling, and simulation was done for the first time on such materials, and it pointed out that the role of hydrogen bonds is more critical in determining blend properties. Blends can be prepared for practical applications with a good combination of stiffness (0.8 GPa), tensile strength (22 MPa), and elongation-at-break (25 %) at 30 vol% lignosulfonate content and 33 % neutralization.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Adhesion Deformation processes Interaction Mechanical properties Molecular dynamics Quantitative analysis
Megjelenés:	International Journal Of Biological Macromolecules. - 254 (2024), p. 1-8. -
További szerzők:	Blasius, Jan Kun Dávid Hollóczki Oldamur (1983-) (okleveles vegyészmérnök) Pukánszky Béla (kémikus)
Pályázati támogatás:	OTKA-FK 138823 OTKA ÚNKP-22-5
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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