Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Preparation and Physical Properties of Biodegradible Poly(L-lactide )/silica Composites

생분해성 폴리락타이드/실리카 복합체 제조 및 특성

  • Lee, Byung-Ick (Faculty of Applied Chemical Engineering, Chonnam National University) ;
  • Kim, Sung-Hun (Faculty of Applied Chemical Engineering, Chonnam National University) ;
  • Lee, Moo-Sung (Faculty of Applied Chemical Engineering, Chonnam National University)
  • 이병익 (전남대학교 응용화학공학부) ;
  • 김성헌 (전남대학교 응용화학공학부) ;
  • 이무성 (전남대학교 응용화학공학부)
  • Published : 2008.10.31
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Abstract

The composites of poly(l-lactide) (PLLA) and silica were prepared using a Haake melt mixer. In order to improve the interfacial adhesion between the two components silica was modified using three different silane coupling agents with different functional moieties. For the case that silica is treated with GPTS or MPTS, the molecular weight of PLLA are significantly reduced. This results in the lowering of the glass transition temperature ($T_g$) and melt viscosity of the composites. However, when the APTS-treated silica with amine functionality is added to PLLA, the storage modulus and melt viscosity of the composites are somewhat increased compared to neat PLLA. The rate of melt crystallization of PLLA is also increased as a result of surface treatment of silica.

Keywords

References

  1. H. F. Mark, N. M. Bikales, C. G. Overberger, and G. Menges, Eds., "Encyclopedia of Polymer Science and Engineering", John Wiley & Sons, NY, 1985, Vol. 2, pp. 220-243
  2. R. E. Drumright, P. R. Gruber, and D. E. Henton, "Polylactic Acid Technology", Adv Mater, 2000, 12, 1841-1846 https://doi.org/10.1002/1521-4095(200012)12:23<1841::AID-ADMA1841>3.0.CO;2-E
  3. http://en.wikipedia.org/wiki/Polylactide
  4. http://www.natureworksllc.com/product-and-applications/natureworks-biopolymer/technical-publications/~/media/Files/Blends-Technology-Focus-Report-pdf.ashx
  5. L. E. Nielsen and R. F. Landel, "Mechanical Properties of Polymers and Composites", 2nd Ed., Marcel Dekker, NY, 1994, Chapter 7
  6. R. N. Rothon, "Particulate-Filled Polymer Composites", 2nd Ed., Rapra Technol., Shawbury, 2003, Chapter 4
  7. http://www.natureworksllc.com/product-and-applications/natureworks-biopolymer/technical-publications/~/media/Files/Fillers-and-Fibers-Technology-Report-pdf.ashx
  8. http://www.gelest.com/Library/09Apply.pdf
  9. S. H. Kim, S. H. Ahn, and T. Hirai, "Crystallization Kinetics and Nucleation Activity of Silica Nanoparticle-Filled Poly (Ethylene 2,6-Naphthalate)", Polymer, 2003, 44, 5625-5634 https://doi.org/10.1016/S0032-3861(03)00623-2
  10. C. S. Reddy, C. K. Das, and M. Narkis, "Propylene-Ethylene Copolymer Nanocomposites: Epoxy Resin Grafted Nanosilica as a Reinforcing Filler", Polym Composite, 2005, 26, 806-812 https://doi.org/10.1002/pc.20145
  11. B. Wunderlich, "Macromolecular Physics", Academic Press, NY, 1976, Vol.2, p.38
  12. A. D. Bona, "Characterizing Ceramics and the Interfacial Adhesion to Resin. II. the Relationship of Surface Treatment, Bond Strength, Interfacial Toughness and Fractograph", J Appl Oral Sci, 2005, 13, 101-109 https://doi.org/10.1590/S1678-77572005000200002