Abstract
In order to improve stability and reduce droplet size, the PEG-modified urethane acrylates were synthesized by the reaction of polyethylene glycol (PEG) with residual isocyanate groups of urethane acrylate to incorporate hydrophilic groups into the molecular ends. The droplet sizes of the PEG-modified urethane acrylate emulsions were much smaller than those of unmodified urethane acrylate emulsions at the same surfactant composition, and the droplet sizes of these emulsions were significantly effected not by surfactant compositions and types, but by the reaction molar ratio of PEG, because the urethane acrylate containing polyoxyethylene groups as terminal groups aided the interfacial activity of surfactant molecules and acted as a polymeric surfactant. The actions of PEG-modified urethane acrylate were confirmed by the investigation of adsorption of urethane acrylate in a water/benzene interface.
For polymerization of emulsions, the stability of emulsion in the process of emulsion polymerization was changed by the type of surfactant or initiator. In the case of emulsion polymerization with a water soluble initiator (K2S2O8), the emulsions prepared using TWEEN 60 were broken in the process of polymerization. However, polymerization of these emulsions could be carried out using an oil soluble initiator (AIBN). The conversion of emulsion polymerization changed with the type of urethane acrylates, that is, the reaction molar ratio of PEG to 2-HEMA.
Similar content being viewed by others
References
Silverstein MS, Narkis M (1990) J Appl Polym Sci 40:1583–1599
Lovell PA, McDonald J, Saunders DE, Yung RJ (1990) Polymer 34:61
Jonsson J, Hassander H, Jansson LH, Tomell D (1991) Macromolecules 24:126
Chen TC, Dimonie V, El-Aasser MS (1991) J Appl Polym Sci 42:1049
Cho I, Lee KW (1985) J Appl Polym Sci 30:1903
Kong HJ, Kim JY, Suh KD (1995) submitted at Colloid Polym Sci
Kong HJ, Kim JY, Suh KD (1995) submitted at Polymer Bulletin
Hsu SL, Xiao HX, Szmant HH, Frisch KC (1984) J Appl Polym Sci 29:2467–2479
Ohtani N, Inoue Y, Mizuoka H, Itoh K (1994) J Appl Polym 32:2589–2595
Chen SA, Hsu JS (1993) Polymer 34:2776–2782
Noll K (1974) US Patent, 3,905,929
David DJ, Staley HB (1969) Analytical Chemistry of polyurethane High Polymer Series, XVI, Part III, Wiley-Interscience, New York
Vold RD, Mittal KL (1972) J Colloid & Interface Sci 38:451–459
Mittal KL, Vold RD (1972) JAOCS 49:527–532
Vold RD, Acevedo MC (1976) ibid 54:84–90
Berger KG, White GW (1971) J Food Technol 6:285–294
Scick MJ (1987) In: Schick MJ, Fowkes FM (eds) Nonionic Surfactants, marcel Dekker, New York and Barsel, pp 525–527
Boyd J, Parkinson C, Sherman P (1972) J Colloid & Interface Sci 41:359–370
Harusawa F, Nakajima H, Tanaka M (1982) J Sco Cosmet Chem 33:115–129
Kim JW, Kim JY, Suh KD (1996) Accepted by Polymer Bulletin
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kim, J.Y., Suh, K.D. Preparation of PEG-modified urethane acrylate emulsion and its emulsion polymerization. Colloid Polym Sci 274, 920–927 (1996). https://doi.org/10.1007/BF00656621
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00656621