Journal of Materials Science

, Volume 50, Issue 2, pp 794–800 | Cite as

Effect of blending with polyamidoamine (PAMAM) dendrimer on the toughness of poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV)

  • Yu-Juan Jin
  • Yun-Xuan Weng
  • Xue-Xin Li
  • Min Zhang
  • Xiu-Lan Xin
Original Paper


Different proportions of polyamidoamine (PAMAM) dendrimer were blended with poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) resin in chloroform for film casting. Differential scanning calorimetry and scanning electron microscopy were employed to characterize the PHBV/PAMAM composite films upon stretching and tangential breaking. The results indicated that with the addition of PAMAM dendrimer, the glass transition temperature of the PHBV/PAMAM composite films became more distinct, indicating that the blends had a greater toughness than pure PHBV. The calculated crystallinity values indicated that the crystallinity of the PHBV/PAMAM blends was lower than that of PHBV (0.09–56.18 % vs. 73.18 %, respectively). Moreover, the mechanical performance tests indicated that the addition of PAMAM dendrimer considerably increased the tangential breaking strength of PHBV from 24.08 kN/m to as high as 62.03 kN/m, whereas the tensile strength remained basically unchanged. The optimal toughening effect was observed with a PAMAM dendrimer content of 3.0 phr.


Differential Scanning Calorimetry PHBV Hyperbranched Polymer PAMAM Dendrimer Glass Mold 
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The authors gratefully acknowledge the financial support of the National Science Found (Project No. 21376008), the Public Welfare Scientific Research Found of Quality Inspection (Project No. 201310256) and the Beijing University Youth Talent Plan Project Found (Project No. YETP1451).


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Yu-Juan Jin
    • 1
  • Yun-Xuan Weng
    • 1
  • Xue-Xin Li
    • 1
  • Min Zhang
    • 1
  • Xiu-Lan Xin
    • 1
  1. 1.Material Science and Engineering DepartmentBeijing Technology and Business UniversityBeijingChina

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