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Licensed Unlicensed Requires Authentication Published by De Gruyter October 8, 2014

Antibacterial polyamides based on a dendritic zinc-hybrid with good biocompatibility showing reduced biofilm formation

  • Michael Gladitz , Janine Bauer , Peggy Brückner , Stefan Reinemann EMAIL logo , Cornelia Wiegand , Michael Zieger , Kirsten Reddersen , Uta-Christina Hipler , Marion Frant , Klaus Liefeith and Hans-Joachim Radusch
From the journal BioNanoMaterials


Antimicrobial organic-inorganic hybrids based on amphiphilic dendritic hyperbranched polyethylenimine with zinc were prepared. To study their property profile and potential as an antimicrobial modifier they were incorporated via melt extrusion into cast films or injection molded into plates of polyamide (PA). The antimicrobial efficacy, bacterial adhesion, cytotoxicity and blood compatibility of the respective PA composites were investigated as a function of material composition and morphology. It could be demonstrated that the polymers with the developed zinc-hybrids possess a high antimicrobial efficacy as well as good cyto- and hemo-compatibility in vitro. Furthermore, they showed reduced bacterial adhesion. Finally, it can be stated that the developed zinc-hybrids are suitable as advanced additive agents for the production of antimicrobial polymer materials with promising properties particular for various medical applications.

Corresponding author: Dr. Stefan Reinemann, Thuringian Institute of Textile and Plastics Research, Department of Plastics Research, Breitscheidstr. 97, 07407 Rudolstadt, Germany, Phone: +49 3672 379400, Fax: +49 3672 379379, E-mail:


The authors would like to thank the Federal Ministry of Economics and Technology for the financial support of this work (BMWi, project no. MF100065).


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Supplemental Material

The online version of this article (DOI: 10.1515/bnm-2014-0009) offers supplementary material, available to authorized users.

Received: 2014-6-10
Accepted: 2014-9-19
Published Online: 2014-10-8
Published in Print: 2014-9-1

©2014 by De Gruyter

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