Graft copolymers as emulsifiers. Part I. Grafted polyethylene glycol on poly(methyl methacrylate).

Citation:

Nissim Garti, Rosano, Anat , and Avni, Yair. . 1993. “Graft Copolymers As Emulsifiers. Part I. Grafted Polyethylene Glycol On Poly(Methyl Methacrylate).”. Journal Of Dispersion Science And Technology, 14, 1, Pp. 47–70. doi:10.1080/01932699308943387.

Abstract:

Polymeric surfactants, based on grafted poly (ethylene glycol) (I) with different chain lengths on PMMA are prepd. and studied. The graft copolymer is prepd. by a transesterification reaction on the -OCOCH3 groups of the PMMA. The amphiphilic polymers reduce only slightly the H2O/air surface tension. However, interfacial tension of oil phases such as toluene are significantly reduced. The best polymeric surfactant, reducing interfacial tension practically to zero, is PMMA of mol. wt. 130,000 grafted with 6.5 wt% I consisting of 22 ethylene oxide units. Spontaneous emulsification is achieved with very low polymer concn. (\textless1.0%). Flocculation is obsd. in emulsion in which excess emulsifier is used or in systems contg. free ungrafted I. [on SciFinder(R)]

Peer Review Publications All Publications
Last updated on 05/27/2020