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dc.contributor.authorPark, S-
dc.contributor.authorChang, Y-
dc.contributor.authorCho, JH-
dc.contributor.authorNoh, I-
dc.contributor.authorKim, C-
dc.contributor.authorKim, SH-
dc.contributor.authorKim, YH-
dc.date.accessioned2024-01-21T17:39:49Z-
dc.date.available2024-01-21T17:39:49Z-
dc.date.created2022-01-10-
dc.date.issued1998-01-
dc.identifier.issn0379-153X-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/143399-
dc.description.abstractCopolymers of L-lactic acid with epsilon-caprolactone were prepared to provide poly (L-lactic acid) with flexibility and thermal stability. L-Lactic acid and epsilon-caprolactone were "one-pot" polymerized in the presence of Sb2O3 as a catalyst and dipentaerythritol (DIPET) as an initiator. Molecular weights of the copolymers were remarkably increased by the addition of DIPET. The copolymers were amorphous when the L-lactic acid composition was in the range of 20 similar to 90%, while the homopolymer of L-lactic acid and epsilon-caprolactone were semicrystalline. The glass transition temperatures(T-g) of the copolymers were in the range of -48 degrees C similar to 43 degrees C and decreased as the content of epsilon-caprolactone was increased. Initial thermal decomposition temperatures(T-d) of the copolymers were 212 degrees C similar to 289 degrees C, which were higher than the T-d of poly(L-lactic acid), 168 degrees C.-
dc.languageKorean-
dc.publisherPOLYMER SOC KOREA-
dc.subjectSTANNOUS OCTOATE-
dc.subjectPENTAERYTHRITOL-
dc.subjectPOLYMERIZATION-
dc.titleSynthesis and thermal properties of copolymers of L-lactic acid and epsilon-caprolactone-
dc.typeArticle-
dc.description.journalClass1-
dc.identifier.bibliographicCitationPOLYMER-KOREA, v.22, no.1, pp.1 - 5-
dc.citation.titlePOLYMER-KOREA-
dc.citation.volume22-
dc.citation.number1-
dc.citation.startPage1-
dc.citation.endPage5-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.identifier.wosid000072247700001-
dc.identifier.scopusid2-s2.0-23044444474-
dc.relation.journalWebOfScienceCategoryPolymer Science-
dc.relation.journalResearchAreaPolymer Science-
dc.type.docTypeArticle-
dc.subject.keywordPlusSTANNOUS OCTOATE-
dc.subject.keywordPlusPENTAERYTHRITOL-
dc.subject.keywordPlusPOLYMERIZATION-
dc.subject.keywordAuthorL-lactic acid-
dc.subject.keywordAuthorepsilon-caprolactone-
dc.subject.keywordAuthorcopolyester-
dc.subject.keywordAuthordipentaerythritol-
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