Biodegradable stereocomplex polylactide having flexible E >-caprolactone unit

Authors
Kang, Min KyuJung, YoungmeeKim, Soo Hyun
Issue Date
2013-09
Publisher
POLYMER SOC KOREA
Citation
MACROMOLECULAR RESEARCH, v.21, no.9, pp.1036 - 1041
Abstract
Stereocomplex formation between poly(L-lactide-co-E >-caprolactone) (PLLCL) and poly(D-lactide-co-E >-caprolactone) (PDLCL) is known to be disturbed when their molecular weights increase to > 10(5) 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 similar to 2.5 times increased due to high degree of stereocomplex than those of PLGA20. The addition of the flexible E >-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.
Keywords
IN-VITRO HYDROLYSIS; ENANTIOMERIC POLY(LACTIC ACID)S; MECHANICAL-PROPERTIES; POLY(D-LACTIC ACID); BEHAVIOR; POLY(L-LACTIDE); BLENDS; POLYMERIZATION; POLYMERS; IN-VITRO HYDROLYSIS; ENANTIOMERIC POLY(LACTIC ACID)S; MECHANICAL-PROPERTIES; POLY(D-LACTIC ACID); BEHAVIOR; POLY(L-LACTIDE); BLENDS; POLYMERIZATION; POLYMERS; stereocomplex formation; copolymerization; supercritical fluid
ISSN
1598-5032
URI
https://pubs.kist.re.kr/handle/201004/127712
DOI
10.1007/s13233-013-1120-8
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KIST Article > 2013
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