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

doi:10.11944/j.issn.1000-0518.2016.09.150429

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

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

ZHANG Han^a^b,SUN Zhiqiang^a,PANG Xuan^a^*(),ZHOU Linyao^a,LI Shuai^a,SUN Haibo^a,CHEN Wenqi^a,CHEN Xuesi^a

^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

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

ZHANG Han, SUN Zhiqiang, PANG Xuan, ZHOU Linyao, LI Shuai, SUN Haibo, CHEN Wenqi, CHEN Xuesi. Structure and Properties of Polylactide/Polycaprolactone/Poly(ε-caprolactone-L-lactide) Ternary Blends[J]. Chinese Journal of Applied Chemistry, 2016, 33(9): 1026-1032.

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

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