Morphology and Properties of PHBV / PBAT Blends

doi:10.19491/j.issn.1001-9278.2008.06.010

China Plastics ›› 2008, Vol. 22 ›› Issue (06): 44-48 .DOI: 10.19491/j.issn.1001-9278.2008.06.010

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Morphology and Properties of PHBV / PBAT Blends

OUYANG Chun-fa，JIA Run-ping，WANG Xia，MA Pi-ming，ZHANG Yong

1 .Department of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 200235,China; 2. Research Institute of Polymer Materials, Shanghai Jiaotong University, Shanghai 200240,China

Received:2008-01-23 Revised:1900-01-01 Online:2008-06-25 Published:2008-06-25

Abstract

Abstract: Biodegradable poly(hydroxybutyrate-co一hyd roxyvalerate)/poly(butylene adipate-co一terephthalate)(PHBV /PBAT)blends were prepared via melting blending.Morphologies, mechanical and thermal properties of the blends were studied. The elongation at break and notched Izod impact strength of PHBV/PBAT blend reached 55 % and 542J/m, 19 and 22.6 times that of neat PHBV, respective1y. Scanning electronic microscopy(SEM) indicated that PBAT constituted dispersed phase in the PHBV /PBAT blends when its weight fraction below 50 wt，at which a phase inversion occurred. Differential Scanning Calorimetry (DSC) suggested that the crystallization temperatures of PHBV in PHBV/PBAT blends were 20一40℃lower than those of neat PHBV due to the inhibition effect of PBAT.

Key words: poly(hydroxybutyrate-co一hyd roxyvalerate), poly(butylene adipate-co一terephthalate), phase morphology, mechanical property, biodegradation

OUYANG Chun-fa, JIA Run-ping, WANG Xia, MA Pi-ming, ZHANG Yong. Morphology and Properties of PHBV / PBAT Blends[J]. China Plastics, 2008, 22(06): 44-48 .

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