Micellar morphological changes promoted by cyclization of PS-b-PI copolymer: DLS and AFM experiments

Macromolecules

Volumn 36, Issue 11, 2003, Pages 4125-4133

  Minatti, E ^a,b   Viville, P ^c   Borsali, R ^a   Schappacher, M ^a   Deffieux, A ^a   Lazzaroni, R ^c  

^a UNIVERSITÉ BORDEAUX 1   (France)

^b Depto de Quimica da Universidade   (Brazil)

^c CRESMAP   (Belgium)

Author keywords

[No Author keywords available]

Indexed keywords

ATOMIC FORCE MICROSCOPY; GRAIN SIZE AND SHAPE; HEPTANE; LIGHT SCATTERING; MICELLES; MORPHOLOGY; POLYISOPRENES; POLYMERIZATION; POLYSTYRENES;

CYCLIC COPOLYMERS; CYCLIZATION; DYNAMIC LIGHT SCATTERING; LINEAR COPOLYMERS;

COPOLYMERS;

EID: 0037793371     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma020927e     Document Type: Article

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45. To avoid the agglomeration of the single micelles into clusters and get a clearer picture of their morphology, we prepared a sample (Figure 8A) for which the solvent was freeze-dried. The solution was applied onto the substrate and quickly frozen with liquid nitrogen and then dried under vacuum. At low temperatures, the kinetics of the particles inside the solution and the evaporation rate are both slowed, and what we observe is most probably closer to the real morphology of the micelles in solution.