Mechanical properties and biodegradability of poly-3-caprolactone/soy protein isolate blends compatibilized by coconut oil

Seung In Hong, Won Young Choi, Seung Yong Cho, Se H. Jung, Boo Y. Shin, Hyun Jin Park

Research output: Contribution to journalArticle

20 Citations (Scopus)


This study was performed for the mechanical properties, adhesion properties and biodegradability depending on the coconut oil content based on poly-ε-caprolactone (PCL):soy protein isolate (SPI) blends. Coconut oil was capable of forming the PCL:SPI blend. Tensile strength (TS) of the blend decreased and elongation at break (EAB) increased when the concentration of coconut oil increased. Lap shear strength of all samples was observed in the values of the general formulated hot-melt but in particularly, high adhesive strength was shown at 20 mL of coconut oil. The improvement of surface hydrophilicity and biodegradation resulted from the addition of SPI rather than coconut oil. Consequently, coconut oil acted as a plasticizer and compatibilizer although it did not enhance in biodegradation and surface hydrophilicity.

Original languageEnglish
Pages (from-to)1876-1881
Number of pages6
JournalPolymer Degradation and Stability
Issue number10
Publication statusPublished - 2009 Oct 1



  • Biodegradability
  • Coconut oil
  • Hot-melt adhesive
  • Poly-ε- caprolactone
  • Soy protein isolate

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry
  • Mechanics of Materials
  • Condensed Matter Physics

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