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Journal of Materials Science

, Volume 43, Issue 12, pp 4290–4296 | Cite as

Toughening effect of maleic anhydride grafted linear low density polyethylene on linear low density polyethylene

  • Le-Ping Huang
  • Xing-Ping Zhou
  • Wei Cui
  • Xiao-Lin Xie
  • Shen-Yi Tong
Article

Abstract

The blend of linear low density polyethylene (LLDPE) and maleic-anhydride grafted LLDPE with the grafting degree of 1.3% and the gel content of 27.0% (designated as LLDPE/MA-PE) was melt-compounded. Their thermal, rheological, and mechanical properties were studied. The crystallization temperature and crystallization rate of LLDPE/MA-PE blends increase due to the nucleation of MA-PE, their crystallinity is between those of LLDPE and MA-PE due to the balance between the nucleation of MA-PE and simultaneously produced more defects. The addition of MA-PE increases the apparent viscosity of blend melts, but the shear-sensitivity of blends provides them with melting processing. Interestingly, the lamellar crystallites induced by MA-PE decrease the tensile yielding strength of LLDPE/MA-PE blends. During the impact fracture, the formation of oriented crystalline lamellae parallel to the crack front and perpendicular to the crack flank, leads to the deformation and microstriations in LLDPE/MA-PE blends. Subsequently, toughness of LLDPE/MA-PE blends is improved.

Keywords

Apparent Viscosity LDPE Maleic Anhydride LLDPE Polarize Optical Microscope 

Notes

Acknowledgements

The authors are grateful for the financial support of National Natural Science Foundation of China (50573026) and Program for New Century Excellent Talents in Universities of China (NCET-05–0640). As visiting professor of the Centre for Advanced Materials Technology (CAMT), the University of Sydney, XLX thanks Prof. Yiu-Wing Mai’s academic guidance and help.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Le-Ping Huang
    • 1
  • Xing-Ping Zhou
    • 1
  • Wei Cui
    • 1
  • Xiao-Lin Xie
    • 1
    • 2
  • Shen-Yi Tong
    • 3
  1. 1.Department of Chemistry and Chemical Engineering, Hubei Key Laboratory of Materials Chemistry and Service FailureHuazhong University of Science and TechnologyWuhanChina
  2. 2.Center for Advanced Materials Technology, School of Aerospace, Mechanical and Mechatronic Engineering, J07University of SydneySydneyAustralia
  3. 3.Hubei Key Laboratory of Novel Reactor and Green Chemical TechnologyWuhan Institute of TechnologyWuhanChina

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