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Hyperbranched polyesters as biodegradable and antibacterial additives

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Abstract

Herein, we present novel hyperbranched poly(amino-ester)s functionalized with quaternary ammonium salts (QAS-HPAEs). These materials can be used as antibacterial and biodegradable additives for mixing with non-active polymers. The chemical structure and thermal properties of the HPAEs were studied. All QAS-HPAEs were stable until 192 °C, which makes their thermal blending with other polymers possible. Blending polycaprolactone (PCL) as a biodegradable polymer with QAS-HPAEs improved its surface and bulk hydrophilicity, while partially decreasing its elastic modulus and tensile strength. Mixing 10 wt% of QAS-HPAEs in PCL resulted in a film with high contact-killing activity against E. coli and B. subtilis and faster degradability in the presence and absence of esterase. The activity of esterase was inhibited in the presence of a higher content of QAS-HPAEs (20 wt%).

Graphical abstract: Hyperbranched polyesters as biodegradable and antibacterial additives

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Publication details

The article was received on 12 May 2017, accepted on 17 Jul 2017 and first published on 18 Jul 2017


Article type: Paper
DOI: 10.1039/C7TB01301A
Citation: J. Mater. Chem. B, 2017, Advance Article
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    Hyperbranched polyesters as biodegradable and antibacterial additives

    H. Bakhshi and S. Agarwal, J. Mater. Chem. B, 2017, Advance Article , DOI: 10.1039/C7TB01301A

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