Article
  • Synthesis of New Degradable Aliphatic Polyester by Transesterification : Synthesis of Aliphatic Polyester Containing Aromatic Structures
  • Kim DK, Shin YS, Im SS, Yoo YT, Huh JR
  • 에스테르 교환반응을 이용한 새로운 생분해성 지방족 폴리에스테르의 합성 : 방향족 구조를 함유하는 지방족 폴리에스테르의 합성
  • 김동국, 신연수, 임승순, 유영태, 허정림
Abstract
Poly(butylene succinate)[PBS] was synthesized from succinic acid and butanediol. PBS/PET copolymers were prepared by the transesterification of PBS with PET. Inherent viscosity of the copolymers decreased with increasing PET contents, whereas tensile strength decreased a little compared to that of PBS homopolymer. Elongation was greatly improved when the copolymer contained 15 ㏖% PET. PBS/PBT copolymers were also obtained by adding PBT to PBS. Unlike PBS/PET copolymers their inherent viscosity increased until the content of PBT reached up to 15 ㏖% and then gradually decreased with PBT contents. Tensile strength and elongation of the PBS/PBT copolymers containing 5∼20 ㏖% PBT were also improved. Both copolymers synthesized by the transesterification demonstrated enhanced thermal stabilities compared to the PBS homopolymer.

생분해성 지방족 폴리에스테르인 poly(butylene succinate)[PBS]를 succinic acid와 부탄디을에서 합성하였다. PBS와 PET를 혼합하여 에스테르 교환반응으로 PBS/PET 공중합체를 합성하였으며 PET함량이 증가할수록 점도가 감소하였다. PET가 15mo1%일 때 PBS보다 신율이 크게 증가하였으며 인장강도는 PET가 첨가되면 감소하였다. PBS와 PBT의 에스테르 교환반응으로 합성한 PBS/PBT 공중합체는 PBS/PET 공중합체와는 달리 PBT 15mo1%때까지 PBS보다 점도가 증가하였으며 그 이후 첨가량에 따라 점도가 완만히 감소하였다. PBT가 5㏖% 첨가된 경우 인장강도가 54MPa로 크게 증가하였으며 10∼20mo1% 경우도 43∼47MPa로 PBS보다 높은 강도를 나타내었으며 신율도 334∼358%로 향상되었다. PBS에 PET와 PBT의 첨가로 방향족 구조가 도입됨에 따라 열안정성이 향상되었다.

Keywords: PBS; PET; transesterification; PBS/PET copolymer; butanediol; succinic acid

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1996; 20(3): 431-438

    Published online May 25, 1996