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Polymers 2013, 5(4), 1339-1351; doi:10.3390/polym5041339
Article

Influence of Glutamic Acid on the Properties of Poly(xylitol glutamate sebacate) Bioelastomer

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Received: 29 September 2013 / Revised: 19 November 2013 / Accepted: 25 November 2013 / Published: 29 November 2013
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Abstract

In order to further improve the biocompatibility of xylitol based poly(xylitol sebacate) (PXS) bioelastomer, a novel kind of amino acid based poly(xylitol glutamate sebacate) (PXGS) has been successfully prepared in this work by melt polycondensation of xylitol, N-Boc glutamic acid and sebacic acid. Differential scanning calorimetry (DSC) results indicated the glass-transition temperatures could be decreased by feeding N-Boc glutamic acid. In comparison to PXS, PXGS exhibited comparable tensile strength and much higher elongation at break at the same ratio of acid/xylitol. The introduction of glutamic acid increased the hydrophilicity and in vitro degradation rate of the bioelastomer. It was found that PXGS exhibited excellent properties, such as tensile properties, biodegradability and hydrophilicity, which could be easily tuned by altering the feeding monomer ratios. The amino groups in the PXGS polyester side chains are readily functionalized, thus the biomelastomers can be considered as potential biomaterials for biomedical application.
Keywords: xylitol; glutamic acid; bioelastomers; property xylitol; glutamic acid; bioelastomers; property
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Dong, W.; Li, T.; Xiang, S.; Ma, P.; Chen, M. Influence of Glutamic Acid on the Properties of Poly(xylitol glutamate sebacate) Bioelastomer. Polymers 2013, 5, 1339-1351.

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