Biodegradable polyesters based on star-shaped lactic acid oligomers
PBN-AR
Instytucja
Wydział Chemiczny (Politechnika Warszawska)
Źródłowe zdarzenia ewaluacyjne
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Polymer Degradation and Stability
ISSN
0141-3910
EISSN
Wydawca
Elsevier
DOI
Rok publikacji
2016
Numer zeszytu
Strony od-do
202-212
Numer tomu
132
Liczba arkuszy
0.5
Słowa kluczowe
en
Biodegradable polymers; Copolymerization; Copolymers; Decomposition; Ethylene; Glass transition; Lactic acid; Oligomers; Polyesters; Polymerization; Stars, Biodegradable polyesters; Catalytic polymerization; Chain architecture; Enzymatic Degradation; Ethylene oxides; L-lactic acid oligomers; Partial decomposition; Poly lactic acid, Ring opening polymerization
Streszczenia
Język
en
Treść
Catalytic polymerization of ε-caprolactone and copolymerization of maleic anhydride and propylene or ethylene oxide carried out in the presence of star-shaped L-lactic acid oligomers were studied. The analysis of the reaction products by means of GPC, MALDI ToF and 1H NMR show that the applied processes allowed to combine oligomers with polyesters produced by ring opening polymerization and obtain a new type of lactic acid copolymers of relative molar masses in the range 15–60 kg/mol. DSC studies revealed that the formed polyesters segments were fully or partially miscible with poly(lactic acid) core causing the reduction of its glass transition temperature. Selected copolymers were subjected to enzymatic degradation, which indicated that all of these compounds underwent partial decomposition. An analysis of weight loss showed, however, that the degradation occurred more slowly than in the case of poly(lactic acid) of similar molar masses and chain architecture.
Inne
System-identifier
WUT775565ea41c64d36ad16c50c6898a0fe
CrossrefMetadata from Crossref logo
Cytowania
Liczba prac cytujących tę pracę
Brak danych
Referencje
Liczba prac cytowanych przez tę pracę
Brak danych