Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, S | - |
dc.contributor.author | Chang, Y | - |
dc.contributor.author | Cho, JH | - |
dc.contributor.author | Noh, I | - |
dc.contributor.author | Kim, C | - |
dc.contributor.author | Kim, SH | - |
dc.contributor.author | Kim, YH | - |
dc.date.accessioned | 2024-01-21T17:39:49Z | - |
dc.date.available | 2024-01-21T17:39:49Z | - |
dc.date.created | 2022-01-10 | - |
dc.date.issued | 1998-01 | - |
dc.identifier.issn | 0379-153X | - |
dc.identifier.uri | https://pubs.kist.re.kr/handle/201004/143399 | - |
dc.description.abstract | Copolymers 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.language | Korean | - |
dc.publisher | POLYMER SOC KOREA | - |
dc.subject | STANNOUS OCTOATE | - |
dc.subject | PENTAERYTHRITOL | - |
dc.subject | POLYMERIZATION | - |
dc.title | Synthesis and thermal properties of copolymers of L-lactic acid and epsilon-caprolactone | - |
dc.type | Article | - |
dc.description.journalClass | 1 | - |
dc.identifier.bibliographicCitation | POLYMER-KOREA, v.22, no.1, pp.1 - 5 | - |
dc.citation.title | POLYMER-KOREA | - |
dc.citation.volume | 22 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 5 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.identifier.wosid | 000072247700001 | - |
dc.identifier.scopusid | 2-s2.0-23044444474 | - |
dc.relation.journalWebOfScienceCategory | Polymer Science | - |
dc.relation.journalResearchArea | Polymer Science | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | STANNOUS OCTOATE | - |
dc.subject.keywordPlus | PENTAERYTHRITOL | - |
dc.subject.keywordPlus | POLYMERIZATION | - |
dc.subject.keywordAuthor | L-lactic acid | - |
dc.subject.keywordAuthor | epsilon-caprolactone | - |
dc.subject.keywordAuthor | copolyester | - |
dc.subject.keywordAuthor | dipentaerythritol | - |
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