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Structural analysis of biodegradable low-molecular mass copolyesters based on glycolic acid, adipic acid and 1,4 butanediol and correlation with their hydrolytic degradation

  • Copolyesters of glycolic acid combined with adipic acid and 1,4 butanediol were synthesized, their in vitro hydrolytic degradation was studied and correlated with their structure. The hydrolytic degradation of the copolyesters was directly related with the degree of crystallinity and the diameter of the crystallites. It was found that glycolate units disturb the ordering of the butylene adipate units, which results in a decrease of the crystallinity. By comparing the hydrolysis parameters of synthesized copolyesters with those of similar aliphatic copolyesters a hydrolysis mechanism was proposed. According to this mechanism, the degradation takes place not only by the loss of end units, but also through the removal of larger segments. MALDI-TOF MS data showed that the possibility of a copolyester macromolecule forming cyclic structures correlates with the arrangement of ester groups in the macromolecules and the structure of the linear segments.

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Metadaten
Autoren/innen:S. Soulis, D. Triantou, Steffen Weidner, Jana Falkenhagen, J. Simitzis
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Polymer degradation and stability
Jahr der Erstveröffentlichung:2012
Verlag:Applied Science Publ.
Verlagsort:London
Jahrgang/Band:97
Ausgabe/Heft:11
Erste Seite:2091
Letzte Seite:2103
Freie Schlagwörter:Biodegradable; Biopolymers; Ft-IR; Hydrolytic degradation; MALDI-TOF-MS; Matrix-assisted laser desorption/ionization-time-of-flight-mass spectrometry
DOI:https://doi.org/10.1016/j.polymdegradstab.2012.09.002
ISSN:0141-3910
ISSN:1873-2321
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:19.10.2012