Journal of Materials Science

, Volume 41, Issue 19, pp 6501–6504 | Cite as

Effect of LTI content on impact fracture property of PLA/PCL/LTI polymer blends

  • Tetsuo Takayama
  • Mitsugu TodoEmail author
  • Hideto Tsuji
  • Kazuo Arakawa

Biodegradable thermoplastic, poly (lactic acid) (PLA), has been used in a variety of industrial fields including automotive, computer, food and electric appliances. PLA has also been utilized as a bioabsorbable material in medical fields such as orthopedics and oral surgery [1, 2]. Fracture properties and behavior of PLA have been characterized, and it was found that multiple-crazes are formed in crack-tip region prior to crack initiation, similarly to the fracture behavior of brittle polymers such as PP and PS [3, 4, 5, 6, 7]. Improvement of toughness of such brittle polymers can generally be achieved by blending a ductile secondary phase to the base polymer. Recently, poly(ε-caprolacton) (PCL), a ductile biodegradable thermoplastics, has been chosen as a blending partner for PLA [8, 9, 10, 11, 12, 13, 14], and the fracture toughness of PLA/PCL blend was found to be effectively greater than that of neat PLA [9]. It was, however, also found that the immiscibility between PLA and PCL...


Fracture Toughness Crack Initiation Impact Fracture Drop Weight Impact Brittle Polymer 


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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  • Tetsuo Takayama
    • 1
  • Mitsugu Todo
    • 2
    Email author
  • Hideto Tsuji
    • 3
  • Kazuo Arakawa
    • 2
  1. 1.Interdisciprinary Graduate School of Engineering ScienceKyushu UniversityKasuga, FukuokaJapan
  2. 2.Research Institute for Applied MechanicsKyushu UniversityKasuga, FukuokaJapan
  3. 3.Department of Ecological ScienceToyohashi University of TechnologyToyohashi, AichiJapan

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