Mechanical properties and morphology of the clay/waterborne polyurethane nanocomposite

  • Zhang Yongcheng
  • Wang Junwei
  • Zhao Yuhua
  • Kang Maoqing
  • Wang Xinkui


Stable clay/waterborne polyurethane nanocompostie dispersions were synthesized by sulfonated poly (butylene adipate) diol, 4,4-diphenylmethane diisocyanate, dimethyl propionic acid, 1,4-butanediol, triethyl amine and clay-water dispersion through a route named prepolymer acetone mixing progress. The reinforced mechanical properties and thermal resistance of films casting from it were examined by dynamic mechanical analyses (DMA), thermogravimetric analyses (TGA) and tensile tests. Furthermore, the morphology of these nanocompostie films and dispersions were observed by transmission electron microscopy (TEM), scanning electron microscopy (SEM), wide-angle X-ray diffraction analyses (WXRD). The experimental results reveal that the clay could be predominantly dispersed in the pristine polymer forming nanocomposties, and evidently enhanced the tensile properties and modulus of it. Additionally, the best-reinforced effect could occur when the clay content was near 1 wt%.

Key words

polyurethane waterborne clay nanocomposties 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    Kim B K, Lee J C. Waterborne Polyurethane and Their Properties [J].J. Polym. Sci., Polym. Chem., 1996, 34(6):1095–1104CrossRefGoogle Scholar
  2. [2]
    Kim B K, Shin J H. Modification of Waterborne Polyurethane by Forming Latex Iinterpenetrating Polymer Networks with Acrylater Rubber[J].Colloid Polym. Sci., 2002, 280(8): 716–724CrossRefGoogle Scholar
  3. [3]
    Sundar, S Tharanikkarasu, A Kannan,et al. Aqueous Dispersions of Poly (urethane-co-vinylpyridine) Synthesized from Polyurethane Macroiniferter[J].Colloid Polym. Sci., 2002, 280(10): 915–921CrossRefGoogle Scholar
  4. [4]
    Kevin Lewandowski, Larry R Krepski, Daniel E Mickul. Synthesis and Properties of Waterborne Self-crosslinkable Sulfo-urethane Silanol Dispersions[J].J. Polym. Sci., Polym. Chem., 2002, 40(17): 3037–3045CrossRefGoogle Scholar
  5. [5]
    Duan Y. Aqueous Polyurethane Dispersion Adhesive Compositions with Improved heat Resistance[J].US Patent, 5, 608,000, 1997Google Scholar
  6. [6]
    Alexander M, Dubois P. Polymer-layered Silicate Nanocomposites: Preparation, Properties and Uses of a New Class of Materials[J].Mater. Sci. Eng., 2000, R28(1–2): 1–63Google Scholar
  7. [7]
    LeBaron PC, Wang Z, Pinnavaia TJ. Polymer-layered Silicate Nanocomposites: An Overview[J].J. Appl. Clay. Sci., 1999, 15(1): 11–29CrossRefGoogle Scholar
  8. [8]
    Giannelis EP, Krishnamoorti RK, Manias E,et al. Polymersilicate Nanocomposites[J].Adv. Polym. Sci., 1999, 138 (1): 107–147CrossRefGoogle Scholar
  9. [9]
    Wang Z, Pinnavaia TJ. Nanoclay Reinforcement of Elastomeric Polyurethane[J].Chem. Mater., 1998, 10(12): 3769–3771CrossRefGoogle Scholar
  10. [10]
    Zilg C, Thomann R, Mulhaupt R,et al. Polyurethane Nanocomposites Containing Laminated Anisotropic Nanoparticles Derived from Organophilic Layered Silicates[J].Adv. Mater., 1999, 11(1): 49–52CrossRefGoogle Scholar
  11. [11]
    Chen TK, Tien YI, Wei KH. Synthesis and Characterization of Novel segmented Polyurethane/Clay Nanocomposites[J].Polymer, 2000, 41(4): 1345–1353CrossRefGoogle Scholar
  12. [12]
    Osman MA, Mittal V, Morbidelli M,et al. Polyurethane Adhesive Nanocomposites as Gas Permeation Barrier[J].Macromolecules, 2003, 36(26): 9851–9858CrossRefGoogle Scholar
  13. [13]
    Ma JS, Zhang SF, Qi ZN. Synthesis and Characterization of Elastomeric Polyurethane/Clay Nanocomposites[J].J. Appl. Polym. Sci., 2001, 82(6): 1444–1448CrossRefGoogle Scholar
  14. [14]
    Mishra JK, Kim I, Ha CS. New Millable Polyurethane/Organoclay Nanocomposite: Preparation, Characterization and Properties[J].Macromol Rapid Commun, 2003, 24(11): 671–675CrossRefGoogle Scholar
  15. [15]
    Chang JH, Uk An Y. Nanocomposites of Polyurethane with Various Organoclays: Thermomechanical Properties, Morphology, and Gas Permeability[J].J. Polym. Sci., Part B: Polym. Phys., 2002, 40(7): 670–677CrossRefGoogle Scholar
  16. [16]
    Xinmin Zhang, Rongjing Xu, Zenggang Wu. The Synthesis and Characterization of Polyurethane/Clay Nanocomposites [J].Polym. Int., 2003, 52(5): 790–794CrossRefGoogle Scholar
  17. [17]
    D J Martin, G. F Meijs, G. M Renwick PA,et al. Effect of Soft-segment CH2/O ratio on Morphology and Properties of a Series of Polyurethane Elastomers[J].J. Appl. Polym. Sci., 1996, 60(4): 557–571CrossRefGoogle Scholar
  18. [18]
    Suprakas Sinha Ray', Masami Okamoto. Polymer/Llayered Silicate Nanocomposites: A Review from Preparation to Processing[J].Prog. Polym. Sci., 2003, 28(11): 1539–1641CrossRefGoogle Scholar

Copyright information

© Wuhan University of Technology 2006

Authors and Affiliations

  • Zhang Yongcheng
    • 1
  • Wang Junwei
    • 1
  • Zhao Yuhua
    • 1
  • Kang Maoqing
    • 1
  • Wang Xinkui
    • 1
  1. 1.Institute of Coal ChemistryChinese Academy of SciencesTaiyuanChina

Personalised recommendations