Surface segregation studies of fluorine-containing diblock copolymers

Macromolecules

Volumn 29, Issue 4, 1996, Pages 1229-1234

  Iyengar, Dhamodharan R ^a   Perutz, Susanne M ^a   Dai, Chi An ^a   Ober, Christopher K ^a   Kramer, Edward J ^a  

^a Cornell University   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 4243160951     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma950544z     Document Type: Article

References (28)

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20. We are well aware of the fact that the model low surface energy groups that we have attached may be susceptible to hydrolysis in aqueous environments or under alkaline pH conditions. One of the polymers, I2-hfb, was stable to hydrolysis after a thin film of it was immersed in distilled water for 24 h as followed by transmission FT-infrared spectroscopy. We believe that the stability is due to water not wetting the surface.
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23. ∞ was confirmed by the following experiments. Thin (1000 Å) layers of polystyrene homopolymer were spun onto samples previously established to have equilibrium segregation by the z* versus annealing time studies and were annealed at 160 °C until z* equilibrium was reestablished. The interfacial block copolymer excesses thus obtained were not significantly different (in fact, a little less consistent with the increase in the thickness of the PS layer) from those obtained without the extra layer of PS, confirming that what we are observing are indeed equilibrium segregation excesses.
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