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Association Behavior of Fluorine-Containing and Non-Fluorine-Containing Methacrylate-Based Amphiphilic Diblock Copolymer in Aqueous Media

Association Behavior of Fluorine-Containing and Non-Fluorine-Containing Methacrylate-Based Amphiphilic Diblock Copolymer in Aqueous Media

Kozo Matsumoto, Tomokazu Ishizuka, Tamotsu Harada, Hideki Matsuoka

Langmuir. 2004 Aug 17;20(17):7270-82.

PMID: 15301515

Abstract:

Fluorine-containing amphiphilic block copolymers, poly(sodium methacrylate)-block-poly(nonafluorohexyl methacrylate) (NaMAm-b-NFHMAn) (m:n = 61:12, 72:33, 64:57), and the corresponding non-fluorine-containing amphiphilic block copolymer, poly(sodium methacrylate)-block-poly(hexyl methacrylate) (NaMAm-b-HMAn) (m:n = 64:10, 69:37, 67:50), were synthesized. Both polyNaMA-b-polyNFHMA and polyNaMA-b-polyHMA formed micelles above critical micelle concentrations, (cmc's), around 3 x 10(-5) to 1 x 10(-4) mol/L, while neither polymer decreased surface tension of aqueous solutions. The size and shape of the micelles were examined by dynamic light scattering, small-angle neutron scattering, and small-angle X-ray scattering. PolyNaMA-b-polyHMA appeared to form only spherical micelles, while polyNaMA-b-polyNFHMA with a long NFHMA segment formed both spherical and rodlike micelles. The micelles of fluorine-containing block copolymers were obviously larger than those of non-fluorine-containing block copolymers with the same chain length and the same hydrophilic/hydrophobic chain ratio. The fluorine-containing block copolymer selectively solubilized fluorinated dye into the water phase when a mixture of decafluorobiphenyl and 2,6-dimethylnaphthalene was added to the micelle solution.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP25087176	Poly(hexyl methacrylate) solution		25087-17-6	Price

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