Polyelectrolyte complex materials from chitosan and gellan gum

Journal Article


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Abstract


  • The formation of polyelectrolyte complexation (PEC) films by dipping free-standing films of either gellan

    gum (GG) or chitosan (CH) into solutions of opposite charge is reported. It was shown that the composition

    and mechanical characteristics depend on pH, and the order in which the biopolymers were added, i.e.,

    dipping CH into GG, or dipping GG into CH. Toughness, tensile strength, extensibility and density values

    of PEC films prepared by immersing CH films into GG solutions increased with increasing CH:GG ratio.

    This was not observed for PEC films prepared by dipping GG into CH. The observed behaviour is attributed

    to the difference in their film compositions, i.e., films prepared by dipping GG into CH solution consist of

    an inner CH layer and two outer GG layers. In contrast, GG appears to diffuse into the CH layer for films

    prepared by dipping CH into GG.

Publication Date


  • 2011

Citation


  • Mat Amin, K. & in het Panhuis, M. (2011). Polyelectrolyte complex materials from chitosan and gellan gum. Carbohydrate Polymers, 86 (1), 352-358.

Scopus Eid


  • 2-s2.0-79959363023

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2130&context=scipapers&unstamped=1

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/1064

Number Of Pages


  • 6

Start Page


  • 352

End Page


  • 358

Volume


  • 86

Issue


  • 1

Abstract


  • The formation of polyelectrolyte complexation (PEC) films by dipping free-standing films of either gellan

    gum (GG) or chitosan (CH) into solutions of opposite charge is reported. It was shown that the composition

    and mechanical characteristics depend on pH, and the order in which the biopolymers were added, i.e.,

    dipping CH into GG, or dipping GG into CH. Toughness, tensile strength, extensibility and density values

    of PEC films prepared by immersing CH films into GG solutions increased with increasing CH:GG ratio.

    This was not observed for PEC films prepared by dipping GG into CH. The observed behaviour is attributed

    to the difference in their film compositions, i.e., films prepared by dipping GG into CH solution consist of

    an inner CH layer and two outer GG layers. In contrast, GG appears to diffuse into the CH layer for films

    prepared by dipping CH into GG.

Publication Date


  • 2011

Citation


  • Mat Amin, K. & in het Panhuis, M. (2011). Polyelectrolyte complex materials from chitosan and gellan gum. Carbohydrate Polymers, 86 (1), 352-358.

Scopus Eid


  • 2-s2.0-79959363023

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2130&context=scipapers&unstamped=1

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/1064

Number Of Pages


  • 6

Start Page


  • 352

End Page


  • 358

Volume


  • 86

Issue


  • 1