Emulsifiers are essential for the stabilization of emulsions. It is known from aqueous emulsion systems that amphiphilic block copolymers are very effective emulsifiers as manifested by the small amount of block copolymers required for emulsification. Typically, emulsifiers contain sulfonate groups or polyethylene glycol as hydrophilic block. In order to extent the concept of the aqueous and non-aqueous emulsions, specially designed diblock copolymers with phosphonic acid groups were designed. Emulsifiers consisting of polyphenylene oxide (PPO) and poly(diethyl p-styrene phosphonate) (PDESP) were elaborated by atom transfer radical polymerization (ATRP) using PPO as macroinitiator and diethyl p-styrene phosphonate as monomer. Subsequent hydrolysis led to diblock copolymers of PPO and poly(styrene phosphonic acid) (PSPA). The success of the synthesis was confirmed by 1H NMR spectroscopy and by gel permeation chromatography (GPC). The diblock copolymers can be applied as emulsifiers in aqueous and non-aqueous emulsions.

New polymeric emulsifiers for aqueous and non-aqueous emulsions

242nd National Meeting (2011)

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