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Physical properties and biodegradation of acrylic acid grafted poly(ε-caprolactone)/chitosan blends

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Abstract

We blended films of acrylic acid grafted polycaprolactone (PCLgAA) and citosan (CS) with different compositions from aqueous acetic acid solution. DSC measurements showed that the melting temperatures and enthalpies of the blends decreased with increasing CS content. From FTIR results, we observe that the amino groups of CS form covalent bonds with the carboxylic groups of PCLgAA in addition to hydrogen bonds between the constituents in the blends. Though the crystal structure of the PCLgAA component was not changed, as proved by WAXD results, blending CS suppressed the crystallinity of the blends. Furthermore, the ductility of CS was increased during tensile testing in PCLgAA/CS blends due to enhanced affinity between the two components. However, PCLgAA/CS blends show greater resistance than PCL/CS blends to biodegradation in an enzymatic environment.

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Authors and Affiliations

  1. Department of Chemical Engineering, Tunghai University, Taichung, Taiwan, 407, Republic of China

    Yeh Wang & Jiang-F. Yang

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  1. Yeh Wang
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  2. Jiang-F. Yang
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Correspondence to Yeh Wang.

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Wang, Y., Yang, JF. Physical properties and biodegradation of acrylic acid grafted poly(ε-caprolactone)/chitosan blends. J Polym Res 17, 221–232 (2010). https://doi.org/10.1007/s10965-009-9308-5

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  • DOI: https://doi.org/10.1007/s10965-009-9308-5

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