Diethanolamides of Castor Oil as Polyols for the Development of Water-Blown Polyurethane Foam

  • Aruna Palanisamy
  • B. S. Rao
  • Shaik Mehazabeen
Original Paper


Castor oil was chemically modified into a diethanolamide by a two step process. The first step was the hydroxylation of double bonds in castor oil and second step was the transamidation using diethanolamine to increase the hydroxyl value. Water blown polyurethane foams were developed with this castor oil based polyol using polypropylene glycol of molecular weight 1,000 as the copolyol and polymeric MDI. The density and mechanical properties namely compression and flexural strength depended on the composition of the foam formulation. The hydroxyamide content and molecular weight of commercial polyol had significant effect on the micro structure as observed by optical microscopy.


Castor oil Diethanolamide Polyurethane foam Compression strength Optical microscopy 


  1. 1.
    Ogunniyi DS (2006) Bioresour Technol 97:1086–1091CrossRefGoogle Scholar
  2. 2.
    Ogunleye OO, Oyawale A, Suru E (2008) Advances Nat Appl Sci 2(1):10–15Google Scholar
  3. 3.
    Güner FS, Yagči Y, Erciyes AT (2006) Prog Polym Sci 31:633–670CrossRefGoogle Scholar
  4. 4.
    Leitheiser RH (1969) J Cell Plast 5:364–372Google Scholar
  5. 5.
    Trevino AS, Trumbo DL (2002) Prog Org Coatings 44:49–54CrossRefGoogle Scholar
  6. 6.
    Ionescu M (2005) Chemistry and technology of polyol for polyurethane. Rapra Technology ltd, Shropshire, p 447Google Scholar
  7. 7.
    Lyon CK, Garrett VH, Frankel EN (1974) J Am Oil Chem Soc 51:331–334CrossRefGoogle Scholar
  8. 8.
    Müller J, Manea V, Quaiser S, Saling P, Maloney JE, Bradlee C (2008) Lupranol Balance—Eco-Efficiency-Analysis, PU magazine 5:(4) (August/September)Google Scholar
  9. 9.
    Khoe TH, Frankel EN (1976) J Amer Oil Chem Soc, 53:(1)17–19Google Scholar
  10. 10.
    Tu YC, Suppes GJ, Hsieh FH (2008) J Appl Polym Sci 109:537–544CrossRefGoogle Scholar
  11. 11.
    Lee CS, Ooi TL, Chuah CH, Ahmad S (2007) J Am Oil Chem Soc 84:945–952Google Scholar
  12. 12.
    Lee CS, Ooi TL, Chuah CH (2009) Amer J Appl Sci 6(1):72–77Google Scholar
  13. 13.
    Rao BS, Palanisamy A (2008) Prog Org Coat 63:416–423CrossRefGoogle Scholar
  14. 14.
    Ogunleye OO, Oyawale FA, Sure E (2007) Global J Biotech Biochem 2(1):28–32Google Scholar
  15. 15.
    Barber E, Nelson J, Beck W (1977) J. Cell. Plast. Nov–Dec: 383–387Google Scholar
  16. 16.
    Narine SS, Kong X, Bouzidi L, Sporns P (2007) J Amer Oil Chem Soc 84:65–72Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Aruna Palanisamy
    • 1
  • B. S. Rao
    • 1
  • Shaik Mehazabeen
    • 1
  1. 1.Organic Coatings and Polymers DivisionIndian Institute of Chemical TechnologyHyderabadIndia

Personalised recommendations