Biodegradable Stereocomplex polylactide having flexible ε-caprolactone unit

Title
Biodegradable Stereocomplex polylactide having flexible ε-caprolactone unit
Authors
강민규정영미김수현
Keywords
stereocomplex formation; copolymerization; supercritical fluid
Issue Date
2013-09
Publisher
Macromolecular research
Citation
VOL 21, NO 9, 1036-1041
Abstract
Stereocomplex formation between poly(L-lactide-co-ε-caprolactone) (PLLCL) and poly(D-lactide-co-ε- caprolactone) (PDLCL) is known to be disturbed when their molecular weights increase to >105 g/mol. Here, Strong and biodegradable stereocomplexes of copolymers (S-PLCL) were studied using a supercritical fluid and co-solvent system. Mechanical properties such as tensile strength were ~2.5 times increased due to high degree of stereocomplex than those of PLGA20. The addition of the flexible ε-caprolactone units to the polylactide increased its thermal stability which significantly enhanced 100% degree of stereocomplex after 2nd melt processing through DSC due to the increased mobillity of the polylactide’s chains. The degradation behavior of resulting biodegradable S-PLCL showed slow degradation with increasing CL content in 0.13 M, pH 4.3 phosphate buffers.
URI
http://pubs.kist.re.kr/handle/201004/45252
ISSN
15985032
Appears in Collections:
KIST Publication > Article
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