화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.25, No.3, 599-608, May, 2008
DOI10.1007/s11814-008-0101-7  Export Citation
Effect of biobased and biodegradable nucleating agent on the isothermal crystallization of poly(lactic acid)
Kyung Su Kang, Sang Il Lee1, Tae Jin Lee, Ramani Narayan2, and Boo Young Shin†
  • School of Chemical Engineering and Technology, Yeungnam University, 214-1 Dae-dong, Gyeoungsan 712-749, Korea
  • 1Channel DM Co., Ltd., 12F, Gateway Tower, Dongja-dong, Yongsan-gu, Seoul 140-709, Korea
  • 2Department of Chemical Engineering & Material Science, Michigan State University, East Lansing, MI-48823, USA
E-mail:
The effect of chemically modified thermoplastic starch (CMPS) on the thermal properties and isothermal crystallization kinetics of poly(lactic acid) (PLA) was studied by differential scanning calorimetry (DSC) and compared to that of granular starch and an inorganic nucleating agent, talc. Nucleated PLA showed an additional crystallization of PLA, which affected the melting temperature. The crystallinity and crystallization rate of PLA were considerably enhanced by addition of CMPS, even at 0.1% content, and the amount of the CMPS had little effect on the thermal properties and isothermal crystallization kinetics of PLA. The effect of CMPS as a nucleating agent was comparable to that of granular starch but slightly less than that of talc. However, CMPS can offer a fully biodegradable nucleating agent with no residues remaining for the biobased and biodegradable polymers.
Keywords:Poly(lactic acid);Nucleating Agent;Isothermal Crystallization;Chemically Modified Thermoplastic Starch
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