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Pregled bibliografske jedinice broj: 598692

Structure and thermal properties of a chitosan coated polyethylene bilayer film


Kurek, Mia; Brachais, Claire-Helene; Nguimjeu, Christelle; Bonnotte, Aline; Voilley, Andree; Galić, Kata; Debeaufort, Frederic
Structure and thermal properties of a chitosan coated polyethylene bilayer film // Polymer degradation and stability, 97 (2012), 8; 1232-1240 doi:10.1016/j.polymdegradstab.2012.05.039 (međunarodna recenzija, članak, znanstveni)


Naslov
Structure and thermal properties of a chitosan coated polyethylene bilayer film

Autori
Kurek, Mia ; Brachais, Claire-Helene ; Nguimjeu, Christelle ; Bonnotte, Aline ; Voilley, Andree ; Galić, Kata ; Debeaufort, Frederic

Izvornik
Polymer degradation and stability (0141-3910) 97 (2012), 8; 1232-1240

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Polyethylene; chitosan coating; thermal stability; microstructure; molecular interactions

Sažetak
The thermal and the structural properties of chitosan coated polyethylene (PE) films were studied. The coating process did not significantly influence the thermal stability and the PE surface structure and/or composition of the polyolefin. Dehydration temperature of chitosan films reflected the strength of water/acetic acid/chitosan chains interactions. Glycerol, used as a plasticizer, formed new hydrophilic centres in the film matrix. Moreover it was better integrated in the CSEGLY than in CSAGLY network. Besides, the addition of a plasticizer in the chitosan films decreased the film degradation temperature. There were two main steps for the PE chitosan coated films degradation. The first degradation step was attributed to the chitosan coating and the second one to the additional degradation of both PE and CS. At a microscopic level, improved adhesion of the chitosan coatings on the polyethylene surface was observed. After coating processing characteristic bonds were found at the PE and chitosan side surface. In the coating layer, after drying, because of residual water and acetic acid, strong hydrogen bonds established. Finally, during drying in the presence of glycerol, acetic acid (which was bound with chitosan macromolecules) was displaced and new bonds between glycerol and N–H groups in the chitosan were formed.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija



POVEZANOST RADA


Projekt / tema
058-1252971-2805 - Permeacijska svojstva nekih polimernih materijala za pakiranje hrane (Kata Galić, )

Ustanove
Prehrambeno-biotehnološki fakultet, Zagreb

Autor s matičnim brojem:
Mia Kurek, (302626)
Kata Galić, (58664)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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