Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
권호 표지
DOI QR코드

DOI QR Code

The Effect of Nucleating Agent for Improving Heat Resistance Properties of L-Lactide Polymer

L-Lactide 폴리머의 내열성 향상을 위한 핵제의 효과 연구

  • Sim, Jae-Ho (Department of Advanced Material and Chemical Engineering, Halla University) ;
  • Kim, Soo-Jong (Department of Advanced Material and Chemical Engineering, Halla University) ;
  • Shim, Jae-Hoon (NPI Co., Ltd. R&D Center)
  • 심재호 (한라대학교 신소재화학공학과) ;
  • 김수종 (한라대학교 신소재화학공학과) ;
  • 심재훈 ((주)엔피아이 부설연구소)
  • Received : 2012.08.14
  • Accepted : 2012.11.08
  • Published : 2012.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper is to review and study about the crystallization nucleating agent to improve the heat-resistance properties of poly(lactic acid). Four sub-micron sized nucleating agents, metallic salts of 2,2'-methylene bis(4,6-di-tert-butylphenol), were prepared and used as a crystallization nucleating agent. Thermal and mechanical properties of polymer compounds were investigated by DSC, HDT and UTM. As the results, While the heat-resistance properties of the polymer compound samples were increased linearly with the contents of nucleating agent as well as their smaller size. Among them, the highest heat-resistance property of compound was observed with 2 wt% of MPZ2. HDT values of PL98Z2 compound was $116^{\circ}C$ at 0.455Mpa.

본 논문은 poly(lactic acid)의 내열성을 향상시키기 위한 결정화 핵제의 검토 및 연구에 대한 것이다. 네 종류의 미세분말 핵제인 금속염 2,2'-methylene bis(4,6-di-tert-butylphenol) salt를 결정화 핵제로 사용하였다. 폴리머 컴파운드의 열적 및 기계적 특성은 DSC, HDT, UTM을 통해 측정하였다. 이 연구의 결과로서, 컴파운드 한 폴리머 샘플들의 내열특성은 핵제의 함량 증가와 미세분말 일수록 선형적으로 증가 하였다. 그 중에서MPZ2의 함량이 2 wt%일때 가장 높은 내열특성을 나타내었으며, PL98Z2 컴파운드의 열변형 온도는 $116^{\circ}C$를 나타내었다 (ASTM D 648, 0.455MPa).

Keywords

References

  1. Li. J, Jling. Z. Q, Wang. Z. B, Chen. P, Li. Y, Zhou. J, Liu. J, Wang. Y. Z, Gu. Q, "Synthesis, crystallization and hydrolysis of aromatic-aliphatic copolyester: Poly(trimethylene terephthalate)-co-poly (l-lactic acid)", Polymer degradation and stability, 96(5), pp.991-999, 2011. https://doi.org/10.1016/j.polymdegradstab.2011.01.023
  2. S. H. Lee, D. J. Kim, J. H. Kim, D. H. Lee, S. J. Sim, J. D. Nam, H. Kye, Y. K. Lee, "Compatibilization and Properties of Modified Starch-Poly(lactic acid) Blend", Polymer (Korea), 28(6), pp.519-523, 2004.
  3. B. Amita, G. Rahulk, B. Sati.N, Choi. H. J, "Compatibility of biodegradable poly (lactic acid) (PLA) and poly (butylene succinate) (PBS) blends for packaging application", Korea-Australia rheology journal, 19(3), pp.125-131, 2007.
  4. Li. J, Kong. M, Cheng. X. J, Li. J. J, Liu. W. F, Chen. X. G, "A facile method for preparing biodegradable chitosan derivatives with low grafting degree of poly(lactic acid)", International journal of biological macromolecules, 49(5), pp.1016-1021, 2011. https://doi.org/10.1016/j.ijbiomac.2011.08.022
  5. Fukushima. K, Murariu, M, Camino. G, Dubois. P, "Effect of expanded graphite/layered-silicate clay on thermal, mechanical and fire retardant properties of poly(lactic acid)", Polymer degradation and stability, 95(6), pp.1063-1076, 2010. https://doi.org/10.1016/j.polymdegradstab.2010.02.029
  6. Chang, J. H. An, Y. U. Sur, GilSoo, "Poly(lactic acid) nanocomposites with various organoclays. I. Thermomechanical properties, morphology, and gas permeability", Journal of polymer science Part B, Polymer physics, 41(1), pp.94-103, 2003.
  7. Di Yingwei, Lannace Salvatore, Maio Ernestodi, Nicolais Luigi, "Poly(lactic acid)/organoclay nanocomposites: Thermal, rheological properties and foam processing", Journal of polymer science Part B, Polymer physics, 43(6), pp.689-698, 2005. https://doi.org/10.1002/polb.20366
  8. Al-Mulla. Emad A, "Preparation of New Polymer Nanocomposites Based on Poly(lactic acid)/Fatty Nitrogen Compounds Modified Clay by a Solution Casting Process", Fibers and polymers, 12(4), pp.444-450, 2011. https://doi.org/10.1007/s12221-011-0444-2
  9. Chang. L, Woo. E. M, "Effects of molten poly(3-hydroxybutyrate) on crystalline morphology in stereocomplex of poly(L-lactic acid) with poly(D-lactic acid)", Polymer, 52(1), pp.68-76, 2011. https://doi.org/10.1016/j.polymer.2010.11.028
  10. Suksut. B, Deeprasertkul. C, "Effect of "Nucleating Agents on Physical Properties of Poly(lactic acid) and Its Blend with Natural Rubber", Journal of polymers and the environment, 9(1), pp.288-296, 2011.
  11. B.U Nam, B.S Lee, "Toughening of PLA stereocomplex by Impact modifiers", Journal of the Korea Academia-Industrial cooperation Society, 13(2), pp.919-925, 2012 https://doi.org/10.5762/KAIS.2012.13.2.919
  12. J. Shikha, R. Muralim, M. Amark, M. Manjusri, G. Anupk, "A New Biodegradable Flexible Composite Sheet from Poly(lactic acid)/ Poly(caprolactone) Blends and Micro-Talc", Macromolecular materials and engineering, 295( 8), pp.750-762, 2010. https://doi.org/10.1002/mame.201000063