Chinese Journal of Applied Chemistry ›› 2016, Vol. 33 ›› Issue (9): 1026-1032.DOI: 10.11944/j.issn.1000-0518.2016.09.150429

• Full Papers • Previous Articles     Next Articles

Structure and Properties of Polylactide/Polycaprolactone/Poly(ε-caprolactone-L-lactide) Ternary Blends

ZHANG Hanab,SUN Zhiqianga,PANG Xuana*(),ZHOU Linyaoa,LI Shuaia,SUN Haiboa,CHEN Wenqia,CHEN Xuesia   

  1. aKey Laboratory of Polymer Ecomaterials,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
    bUniversity of Chinese Academy of Sciences,Beijing 10049,China
  • Received:2015-12-02 Accepted:2016-02-29 Published:2016-08-23 Online:2016-08-23
  • Contact: PANG Xuan
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.51173183, No.21574124, No.51203155)

Abstract:

Three copolymers P(CL-co-LA) made from ε-caprolactone(ε-CL) and L-lactide(L-LA) have been synthesized via the ring-opening polymerization(ROP). Copolymers and PCL were added to PLA by melt blending, and then the PLA/PCL/P(CL-co-LA) blends were obtained. The compatibility, thermal and mechanical properties of the blends were studied. The results show that the interface compatibilizer of PLA/PCL blends, P(CL-co-LA) reduces the size of the PCL dispersed phase, moreover, the compatibility and toughness of PLA/PCL blends are enhanced. When the mass ratio of PLA/PCL/P(CL-co-LA) is 80/20/10, P(CL49/LA51), is which the numbers reprent the molar fraction(%), is the most suitable interface compatibilizer, and the elongation at break of the blends reaches as high as (210±30)%.

Key words: polylactide, poly(ε-caprolactone), blends, toughened, compatibility