Journal of Materials Science

, Volume 42, Issue 13, pp 4838–4844 | Cite as

Preparation and characterization of polyurea microcapsules containing colored electrophoretic responsive fluid

  • G. Li
  • Y. Q. FengEmail author
  • X. G. Li
  • P. Gao
  • J. Wang
  • J. Y. Xie


A kind of yellow–red microencapsulated electronic ink was prepared by interfacial polymerization. The shell of the polyurea (PU) microcapsules was fabricated from tolyene 2,4-diisocyanate (TDI) and triethylene tetraamine (TETA). Pigment Hansa Yellow 10G, as negatively charged electrophoretic particles, was homodispersed in tetrachloroethylene (TCE)/cyclohexane mixture to make the suspending fluid core. And Oil Red was also added in the core to make a red background. Emulsifiers influencing the dispersing process were experimentally investigated. PU microcapsules were characterized on structure, mean particle size and size distribution, morphology with FT-IR, ESEM and image analyzer. The prepared microcapsules were regular, transparent, smooth and optically clear, and had a wall thickness of around 1.5 μm and an excellent sealing property. The electric response behaviors of the electronic ink were studied under electrostatic field. The yellow particles moved quickly and reversibly inside the microcapsules while the electric field alternated, with a response time of 150 ms approximately at E = 30 V/mm.


Polyurea Urea Formaldehyde Interfacial Polymerization Pigment Particle Urea Formaldehyde 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was supported by the National High Technology Research and Development Program of China (863 Program) (Grant No.2004AA302010).


  1. 1.
    Sheridon NK, Richley EA, Mikkelsen JC, Tsuda D, Crowley JC, Oraha KA, Howard ME, Rodkin MA, Swidler R, Sprague R (1999) J Soc Inf Disp 7:141CrossRefGoogle Scholar
  2. 2.
    Davis D, Khan A, Jones C, Huang XY, Doane JW (1999) J Soc Inf Disp 7:43CrossRefGoogle Scholar
  3. 3.
    Hayes RA, Feenstra BJ (2003) Nature 425:383CrossRefGoogle Scholar
  4. 4.
    Comiskey B, Albert JD, Yoshizawa H, Jacobson J (1998) Nature 394:253CrossRefGoogle Scholar
  5. 5.
    Chen Y, Au J, Kazlas P, Ritenour A, Gates H, Mccreary M (2003) Nature 423:136CrossRefGoogle Scholar
  6. 6.
    Gelinck GH, Edzer H, Huitema A, Veenendaal EV, Cantatore E, Schrijnemakers L, Putten JBPHVD, Geuns TCT, Beenhakkers M, Giesbers JB, Huisman BH, Meijer EJ, Benito EM, Touwslager FJ, Marsman AW, Rens BJEV, Leeuw DMD (2004) Nat Mater 3:106CrossRefGoogle Scholar
  7. 7.
    Gardner TJ, Wenz RP (1995) Soc Inf Display Dig Tech Papers 16:695Google Scholar
  8. 8.
    Mürau P, Singer B (1978) Appl J Phys 49:4820CrossRefGoogle Scholar
  9. 9.
    Bert T, Smet HD (2003) Displays 24:223CrossRefGoogle Scholar
  10. 10.
    Bert T, Smet HD (2003) Displays 24:103CrossRefGoogle Scholar
  11. 11.
    Yu DG, An JH, Bae JY, Jung DJ, Kim S, Ahn SD, Kang SY, Suh KS (2004) Chem Mater 16:4693CrossRefGoogle Scholar
  12. 12.
    Lan PN, Corneillie S, Schacht E, Davies M, Shard A (1996) Biomaterials 17:2273CrossRefGoogle Scholar
  13. 13.
    Yang ZQ, Song BZ, Li QX, Fan HL, Ouyang F (2004) China Particuol 2:70Google Scholar
  14. 14.
    Ni PH, Zhang MZ, Yan NX (1995) J Membrane Sci 103:51CrossRefGoogle Scholar
  15. 15.
    Wang JP, Zhao XP, Guo HL, Zheng Q (2004) Langmuir 20:10845CrossRefGoogle Scholar
  16. 16.
    Shaw DJ (1992) In: Introduction to colloid and surface chemistry Butterworth-Heinemann, Oxford, p 200Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • G. Li
    • 1
  • Y. Q. Feng
    • 1
    Email author
  • X. G. Li
    • 1
  • P. Gao
    • 1
  • J. Wang
    • 1
  • J. Y. Xie
    • 1
  1. 1.Department of Chemical Engineering and TechnologyTianjin UniversityTianjinP.R. China

Personalised recommendations