Melt blends of poly (lactic acid)/natural rubber and liquid epoxidised natural rubber

Mohd Bijarimi, Sahrim Ahmad, Rozaidi Rasid

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Although poly(lactic acid) (PLA) is among widely used biodegradable polymers, it has limited applications due to its inherent brittleness, low elongation at break and toughness. Blending with natural rubber (NR) and epoxidised natural rubber (ENR) seems to be a promising alternative, as both materials are derived from renewable resources. Natural rubber was melt-blended with poly (lactic acid) in an internal mixer, Haake Rheomix, with a rotor speed of 50 r.p.m. at 180°C. Liquid epoxidised natural rubber (LENR) was used as a compatibiliser in the binary blending system of thermoplastic natural rubber (TPNR). Results indicate that the mixing torque value and stabilisation torque value in LENR blends are lower than in blends without the compatibiliser. Various compositions of natural rubber, epoxidised natural rubber and compatibiliser were investigated with respect to the stress-strain behaviour. It was found that the addition of LENR compatibiliser improved the stress at break and Young's modulus in the blend system of 40/60 PLA/rubber compositions. The increase in stress at break and Young's modulus were associated with the ability of LENR to compatibilise the PLA/NR binary blends.

Original languageEnglish
Pages (from-to)57-68
Number of pages12
JournalJournal of Rubber Research
Volume17
Issue number2
Publication statusPublished - 2014

Fingerprint

polylactic acid
Rubber
rubber
liquids
Liquids
torque
modulus of elasticity
poly(lactic acid)
Torque
Elastic moduli
thermoplastics
renewable resources
mixers
biodegradability
Biodegradable polymers
rotors
Brittleness
Chemical analysis
Thermoplastics
Toughness

Keywords

  • Blend
  • Compatibiliser
  • ENR
  • Natural rubber
  • PLA

ASJC Scopus subject areas

  • Plant Science
  • Organic Chemistry

Cite this

Melt blends of poly (lactic acid)/natural rubber and liquid epoxidised natural rubber. / Bijarimi, Mohd; Ahmad, Sahrim; Rasid, Rozaidi.

In: Journal of Rubber Research, Vol. 17, No. 2, 2014, p. 57-68.

Research output: Contribution to journalArticle

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