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


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.

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  1. Ogunniyi DS (2006) Bioresour Technol 97:1086–1091

    Article  CAS  Google Scholar 

  2. Ogunleye OO, Oyawale A, Suru E (2008) Advances Nat Appl Sci 2(1):10–15

    CAS  Google Scholar 

  3. Güner FS, Yagči Y, Erciyes AT (2006) Prog Polym Sci 31:633–670

    Article  Google Scholar 

  4. Leitheiser RH (1969) J Cell Plast 5:364–372

    Google Scholar 

  5. Trevino AS, Trumbo DL (2002) Prog Org Coatings 44:49–54

    Article  CAS  Google Scholar 

  6. Ionescu M (2005) Chemistry and technology of polyol for polyurethane. Rapra Technology ltd, Shropshire, p 447

    Google Scholar 

  7. Lyon CK, Garrett VH, Frankel EN (1974) J Am Oil Chem Soc 51:331–334

    Article  CAS  Google Scholar 

  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)

  9. Khoe TH, Frankel EN (1976) J Amer Oil Chem Soc, 53:(1)17–19

    Google Scholar 

  10. Tu YC, Suppes GJ, Hsieh FH (2008) J Appl Polym Sci 109:537–544

    Article  CAS  Google Scholar 

  11. Lee CS, Ooi TL, Chuah CH, Ahmad S (2007) J Am Oil Chem Soc 84:945–952

    Google Scholar 

  12. Lee CS, Ooi TL, Chuah CH (2009) Amer J Appl Sci 6(1):72–77

    CAS  Google Scholar 

  13. Rao BS, Palanisamy A (2008) Prog Org Coat 63:416–423

    Article  CAS  Google Scholar 

  14. Ogunleye OO, Oyawale FA, Sure E (2007) Global J Biotech Biochem 2(1):28–32

    Google Scholar 

  15. Barber E, Nelson J, Beck W (1977) J. Cell. Plast. Nov–Dec: 383–387

  16. Narine SS, Kong X, Bouzidi L, Sporns P (2007) J Amer Oil Chem Soc 84:65–72

    Google Scholar 

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Correspondence to Aruna Palanisamy.

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Palanisamy, A., Rao, B.S. & Mehazabeen, S. Diethanolamides of Castor Oil as Polyols for the Development of Water-Blown Polyurethane Foam. J Polym Environ 19, 698–705 (2011).

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  • Castor oil
  • Diethanolamide
  • Polyurethane foam
  • Compression strength
  • Optical microscopy