Regular repeats of polar (P) and apolar units (A) in the main chain of polyethylene oxides earmark a new class of amphiphilic polymers. This primary structure was designed in analogy to peptides that form coiled-coil structures. In aqueous solution these macromolecules undergo a transition from random coil to helical conformations prior to phase separation.
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Janssen et al. (1997) studied this question.
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