caa a22 4500 445384565 CHVBK 20180317143028.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10924-010-0250-8 doi (NATIONALLICENCE)springer-10.1007/s10924-010-0250-8 Biodegradable Copoly(Amino Acid)s Based on 6-Aminocaproic Acid and l -Leucine [Elektronische Daten] [Weipeng Zhang, Yanqin Huang] Biodegradable copoly(amino acid)s based on 6-aminocaproic acid and l-leucine were prepared by melt condensation polymerization and characterized by Fourier transform infrared spectrometry (FTIR), proton nuclear magnetic resonance spectrometry (1H NMR), and X-ray diffraction (XRD). The intrinsic viscosity and the density of the copoly(amino acid)s were measured. Thermal properties of the copoly(amino acid)s were performed by differential scanning calorimetry (DSC). Results showed that by increasing leucine content of the comonomers, the intrinsic viscosity, melting point, and melting enthalpy of copoly(amino acid)s decrease while the density increases. The enzymatic degradation of the polymers films was tested using papain; results showed that the copoly(amino acid)s are degradable and the enzymatic degradation rate increases with increasing leucine content in the comonomers. Springer Science+Business Media, LLC, 2010 Copoly(amino acid)s nationallicence Thermal properties nationallicence Enzymatic degradation nationallicence XRD nationallicence Zhang Weipeng Xi'an Modern Chemistry Research Institute, East Zhangba Road, 710065, Xi'an, People's Republic of China aut Huang Yanqin Xi'an Modern Chemistry Research Institute, East Zhangba Road, 710065, Xi'an, People's Republic of China aut Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/1(2011-03-01), 177-181 1566-2543 19:1<177 2011 19 10924 https://doi.org/10.1007/s10924-010-0250-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10924-010-0250-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Weipeng Xi'an Modern Chemistry Research Institute, East Zhangba Road, 710065, Xi'an, People's Republic of China aut NATIONALLICENCE 700 1- Huang Yanqin Xi'an Modern Chemistry Research Institute, East Zhangba Road, 710065, Xi'an, People's Republic of China aut NATIONALLICENCE 773 0- Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/1(2011-03-01), 177-181 1566-2543 19:1<177 2011 19 10924 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer