Polyfmethyl methacrylate diblock copolymers

Capek described the use of a macromonomer in miniemulsion polymerization [54]. Lim and Chen used polyfmethyl methacrylate-fr-(diethylamino)ethyl methacrylate) diblock copolymer as surfactant and hexadecane as hydrophobe for the stabilization of miniemulsions [55]. Particles with sizes between about 150 and 400 nm were produced. It is possible to create stable vinyl acetate miniemulsions employing nonionic polyvinyl alcohol (PVA) as surfactant and hexadecane as hydrophobe [56]. 

Figure 6.16 Schematic representation of pattern transfer by taking advantage of the self-assembly of two different diblock copolymers poly(ethylene oxide)-b-poly(st5Tene-r-4-hydroxystyrene) and poly(styrene-r-4-vinylpyridine)-b-poly(methyl methacrylate) followed by irradiation and plasma treatment. The images below correspond to square arrays of pores created onto silicon water resulting from the treatments. PS, polystyrene PMMA, polyfmethyl methacrylate) UV, ultraviolet RIE (Reactive Ion Etching).

SCHEME 10.6 Reaction mechanism for B-H chain transfer reactions and subsequent transformations to prepare chain-end functionalized iPP and iPP-b-PMMA diblock copolymer (MMA = methyl methacrylate PMMA = polyfmethyl methacrylate)). 

The generality and efficiency of this fluorescent-labeling methodology has been demonstrated by preparation of polystyrene-Wock-poly(ferf-butyl acrylate) [186] and polystyrene-fjlock-polyfmethyl methacrylate) [187] diblock copolymers with fluorescent groups at the block junctions. 

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