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“Chrysanthemums”: Weak Micellization
Author(s) -
De Gennes P.G.
Publication year - 1995
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.199500007
Subject(s) - chemistry , copolymer , micelle , polymer , limit (mathematics) , thermodynamics , polymer chemistry , organic chemistry , aqueous solution , physics , mathematical analysis , mathematics
A statistical copolymer (A/B, with 50%–50% composition) immersed in a B polymer matrix, should display a novel form of micellization: portions which are slightly B‐rich protruding outward, and portions which are slightly A‐rich concentrating in a core. The average length of one portion is N eff ≅ 16χ −2 , where χ is the AB Flory parameter. The total length N of the copolymer may range between N eff and N eff 3/2 . The limit N ‐ N eff corresponds to weak association, while N ˜ N eff 3/2 corresponds to very few chains/micelle. Systems of this type should micellize equally well in B or A polymer solvents.
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