Article
  • Analysis of Dynamic and Creep Behaviors of PLA Blends with Blending Ratio
  • Cha JH, Ahn SJ, Jeon HY
  • PLA 블렌드의 조성비에 따른 동역학적 및 크리프 거동 해석
  • 차주희, 안승재, 전한용
Abstract
In the case of poly(lactic acid)/poly(butylene adipate-co-terephthalate) (PLA/PBAT) blend, thermal stability increased as higher PBAT content was blended and it is confirmed that stiffness of PLA/PBAT blend has been improved by increasing the value of storage modulus as addition of CaCO3. From the creep test of PLA/PBAT/CaCO3 blends, the deformation resistance decreased rapidly at lower temperatures as CaCO3 increased. Thus, in the case of application at more than 60 oC, it was considered that PLA/PBAT blend has a high resistance to deformation than pure PLA.

Poly(lactic acid)/poly(butylene adipate-co-terephthalate)(PLA/PBAT) 블렌드의 경우 PLA에 블렌딩된 PBAT의 함량이 커질수록 열안정성이 증가하였으며 CaCO3 첨가에 의한 storage modulus 값의 증가로 PLA/PBAT 블렌드의 강성이 향상되었음을 확인하였다. PLA/PBAT/CaCO3 블렌드의 크리프 변형 결과로부터 CaCO3가 증가할수록 더 낮은 온도에서 시편의 변형 저항성이 급격하게 감소하는 것을 확인하였다. 이로부터 60 oC 이상인 경우 PLA의 단독 사용보다 PLA/PBAT 블렌드를 사용하는 것이 변형에 대한 저항성이 클 것으로 생각된다.

Keywords: PLA/PBAT blend; thermal stability; storage modulus; creep deformation

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2015; 39(4): 566-571

    Published online Jul 25, 2015

  • 10.7317/pk.2015.39.4.566
  • Received on Nov 17, 2014
  • Accepted on Feb 24, 2015