POLYMER COMPOSITION, MOLDED BODY AND NERVE REGENERATION INDUCING TUBE

An object of the present invention is to provide a polymer composition having a low Young's modulus, a high tensile strength, and excellent flexibility. The present invention is a polymer composition containing polylactic acid and a dilactide/ε-caprolactonecopolymer, in which a content of the p...

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Bibliographische Detailangaben
Hauptverfasser: HARIMOTO, Kenichi, SAKAGUCHI, Hirokazu, TANABE, Kanta, TANAHASHI, Kazuhiro
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:An object of the present invention is to provide a polymer composition having a low Young's modulus, a high tensile strength, and excellent flexibility. The present invention is a polymer composition containing polylactic acid and a dilactide/ε-caprolactonecopolymer, in which a content of the polylactic acid relative to a total of 100 mass% of the polylactic acid and the dilactide/ε-caprolactonecopolymer is 20 to 40 mass%, and in which the dilactide/ε-caprolactone copolymer satisfies (1) and (2) below:(1) an R value represented by a following formula is 0.45 or more and 0.99 or less: R=AB/2AB×100 where[A] is a molar fraction (%) of a dilactide residue in the dilactide/ε-caprolactonecopolymer,[B] is a molar fraction (%) of an ε-caprolactone residue in the dilactide/ε-caprolactonecopolymer, and[AB] is a molar fraction (%) of a structure in which a dilactide residue and an ε-caprolactone residue are adjacent to each other (A-B and B-A) in the dilactide/ε-caprolactone copolymer, and(2) at least one of the dilactide residue and the ε-caprolactone residue has a degree of crystallization of less than 14%.