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Degradable Polymer Stars Based on Tannic Acid Cores by ATRP

Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
Department of Biomedical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA
Author to whom correspondence should be addressed.
Polymers 2019, 11(5), 752;
Received: 5 April 2019 / Revised: 22 April 2019 / Accepted: 23 April 2019 / Published: 28 April 2019
(This article belongs to the Special Issue Macromolecular Design via Controlled Polymerization)
Degradable polymers are crucial in order to reduce plastic environmental pollution and waste accumulation. In this paper, a natural product, tannic acid was modified to be used as a polymer star core. The tannic acid was modified with atom transfer radical polymerization (ATRP) initiators and characterized by 1H NMR, FT-IR, and XPS. Twenty-five arm polymer stars were prepared by photoinduced ATRP of poly(methyl methacrylate) (PMMA) or poly(oligo(ethylene oxide) methacrylate) (molar mass Mw = 300 g/mol) (P(OEO300MA)). The polymer stars were degraded by cleaving the polymer star arms attached to the core by phenolic esters under mild basic conditions. The stars were analyzed before and after degradation by gel permeation chromatography (GPC). Cytotoxicity assays were performed on the P(OEO300MA) stars and corresponding degraded polymers, and were found to be nontoxic at the concentrations tested. View Full-Text
Keywords: degradable polymer; tannic acid; ATRP; polymer star degradable polymer; tannic acid; ATRP; polymer star
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MDPI and ACS Style

Cuthbert, J.; Yerneni, S.S.; Sun, M.; Fu, T.; Matyjaszewski, K. Degradable Polymer Stars Based on Tannic Acid Cores by ATRP. Polymers 2019, 11, 752.

AMA Style

Cuthbert J, Yerneni SS, Sun M, Fu T, Matyjaszewski K. Degradable Polymer Stars Based on Tannic Acid Cores by ATRP. Polymers. 2019; 11(5):752.

Chicago/Turabian Style

Cuthbert, Julia, Saigopalakrishna S. Yerneni, Mingkang Sun, Travis Fu, and Krzysztof Matyjaszewski. 2019. "Degradable Polymer Stars Based on Tannic Acid Cores by ATRP" Polymers 11, no. 5: 752.

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