Effect of Experimental Parameters on the Formation of Hydrogels by Polyelectrolyte Complexation of Carboxymethylcellulose, Carboxymethyl Starch, and Alginic Acid with Chitosan

Elizabeth Henao Mejía, Héctor Contreras, Ezequiel Delgado, Germán Quintana

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    Abstract

    Differences in morphology, pH, and electric charge of chitosan (CS) based hydrogels prepared by complexation with carboxymethylcellulose (CMC), carboxymethylated starch (CMS), and alginic acid (AA) at different polymers ratios and changing the order of addition were studied. CMC/CS and AA/CS hydrogels were amorphous and porous three-dimensional networks, with smaller pores at higher anionic polymer/CS ratios. Gelation time increased the agglomeration in the case of CMC/CS and CMS/CS gels. CMC/CS gels showed negative zeta potential values around -372 mV to -51 mV and CMS/CS gels in the range of -526 mV and -158 mV.

    Original languageEnglish
    Article number3085691
    JournalInternational Journal of Chemical Engineering
    Volume2019
    DOIs
    StatePublished - 2019

    Bibliographical note

    Publisher Copyright:
    © 2019 Elizabeth Henao Mejía et al.

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