Fluorine controlling nucleation

Later Yokoyama and Sugiyama proposed a mechanism that controls the growing of the pores inside PS-b-PFMA or PS-b-PFS micelles surrounded by a glassy PS matrix [91], Assuming a nucleation only inside the fluorinated block micelle they propose that the final expansion of the nanopores will be limited by the elastic forces derived from the stretching of the BCP chains due to the pore swelling (Fig. 9.29). 

Fluorine ions have achieved great practical importance in the controlling of nucleation by phase separation. The development of mica glass-ceramics in particular must be addressed at this point. The initiation of phase separation... 

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