The effect of molecular weight on the behaviour of step-growth hydrophobically modified ethoxylated urethane (S-G HEUR) end-capped with dodecyl alcohol

Iranian Polymer Journal (English Edition)

Volumn 13, Issue 3, 2004, Pages

  Barmar, Mohammad ^a   Barikani, Mehdi ^a   Kaffashi, Babak ^b  

^a IRAN POLYMER AND PETROCHEMICAL INSTITUTE   (Iran)

^b UNIVERSITY OF TEHRAN   (Iran)

Author keywords

Association; Hydrophile; Hydrophobe; Oscillatory; S G HEUR; Steady shear viscosity

Indexed keywords

HYDROPHILICITY; HYDROPHOBICITY; MOLECULAR WEIGHT; POLYETHYLENE OXIDES; SYNTHESIS (CHEMICAL); VISCOPLASTICITY; VISCOSITY;

ASSOCIATION; HYDROPHILE; HYDROPHOBE; OSCILLATORY; S-G HEUR; STEADY SHEAR VISCOSITY;

ALCOHOLS;

EID: 19944430975     PISSN: 10261265     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (21)

1. Yekta A., Xu B., Duhamel J., Adiwidjaja H., and Winnik M.A., Fluorescence studies of associating polymers in water: Determination of the chain end aggregation number and a model for the association process, Macromolecules, 28, 956-966 (1995).
2. Glass J.E., Ed., Hydrophilic polymers: Performance with environmental acceptance, Adv. in Chem. Ser. 248, Chap. 10, ACS, Washington DC (1996).
3. Winnik M.A. and Yekta A., Associative polymers in aqueous solution, Cur. Opin. in Col. & Inter. Sci., 2, 424-436 (1997).
4. Lundberg D.J. and Glass J.E., Viscoelastic behaviour among HEUR thickeners, J. Rheol., 35, 1255-1274 (1991).
5. Tirtaatmadja V. Tam K.C., and Jenkins R.D., Superposition of oscillations on steady shear flow as a technique for investigation of the structure of associative polymers, Macromolecules, 30, 1426-1433 (1997).
6. Tam K.C., Jenkins R.D., Winnik M.A., and Basset D.R., A structural model of hydrophobically modified urethaneethoxylate (HEUR) associative polymers in shear flows, Macromolecules, 31, 4149-4159 (1998).
7. Vorobyova O., Lau W., and Winnik M.A., Aggregation number determination in aqueous solution of a hydrophobically modified poly (ethylene oxide) by fluorescence probe techniques, Langmuir, 17, 1357-1366 (2001).
8. Dai S., Tam K.C., and Jenkins R.D., Microstructure of dilute telechelic associative polymer in sodium dodecyl sulfate solutions, Macromolecules, 34, 4673-4675 (2001).
9. Kaczmarski J.P., Tarng M.R., Ma Z., and Glass J.E., Surfactant and salinity influences on associative thickener aqueous solution rheology, Col. Sur. A, 147, 39-53 (1999).
10. Dai S., Tam K.C., and Jenkins R.D., Binding characteristics of hydrophobic ethoxylated urethane (HEUR) and an anionic surfactant: Microcalorimetry and laser light scattering studies, J. Phys. Chem. B, 105, 10189-10196 (2001).
11. Alami E., Almgren M., and Brown W., Interaction of hydrophobically end-capped poly (ethylene oxide) with nonionic surfactants in aqueous solution. Fluorescence and light scattering studies, Macromolecules, 29, 5026-5035 (1996).
12. Hulden M., Hydrophobically modified urethane-ethoxylate (HEUR) associative thickeners. 1. Rheology of aqueous solutions and interactions with surfactants, Col. Sur. A, 82, 263-277 (1994).
13. May R., Kaczmarski J.P., and Glass J.E., Influence of molecular weight distributions on HEUR aqueous solution rheology, Macromolecules, 29, 4745-4753 (1996).
14. Kaczmarski J.P. and Glass J.E., Synthesis and solution properties of hydrophobically-modified ethoxylated urethane with variable oxyethylene spacer lengths, Macromolecules, 26, 5149-5156 (1993).
15. Annable T., Buscall R., Ettelaie R., and Whittlestone D., The rheology of solution of associating polymers: comparison of experimental behavior with transient network theory, J. Rheol., 37, 695-726 (1993).
16. Barmar M., Barikani M., and Kaffashi B., Synthesis of ethoxylated urethane and modification with cetyl alcohol as thickener, Iran. Polym. J., 10, 331-335 (2001).
17. Ma S.X. and Cooper S.L., Shear thickening in aqueous solution of hydrocarbon end-capped poly (ethylene oxide), Macromolecules, 34, 3294-3301 (2001).
18. Annable T., Buscall R., and Ettelaie R., Network formation and its consequences for the physical behavior of associating polymers in solution, Col. Sur. A, 112, 97-116 (1996).
19. Xu B., Yekta A., Li L., Masoumi Z., and Winnik M. A., The functionality of associative polymer networks: The association behaviour of hydrophobically modified urethane-ethoxylate (HEUR) associative polymers in aqueous solution. Col. Sur. A, 112, 239-250 (1996).
20. Pham Q.T. and Russel W.B., Micellar solution of associative triblock copolymers: the relationship between structure and rheology, Macromolecules, 32, 5139-5146 (1999).
21. Green M.S. and Tobolsky A.V., A new approach to the theory of relaxing polymeric media, J. Chem. Phys., 14, 80-92 (1946).