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Aggregation behavior of a polystyrene-b-poly(phenylsilsesquioxane) H-type copolymer at the air/water interface
- Authors
- Seo, Yongsok; Youm, Sang Gil; Kim, Ji Hun; Seo, Youngwook P.; Hong, Soon Man; Sohn, Dae Won; Takahara, Atsushi; Choi, Hyoung Jin
- Issue Date
- May-2012
- Publisher
- Elsevier BV
- Keywords
- H-block copolymer; Surface micelle aggregation; Pi-A behavior
- Citation
- Polymer, v.53, no.11, pp 2223 - 2232
- Pages
- 10
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Polymer
- Volume
- 53
- Number
- 11
- Start Page
- 2223
- End Page
- 2232
- ISSN
- 0032-3861
1873-2291
- Abstract
- A comprehensive Langmuir film balance/atomic force microscope study of the surface aggregation behavior of an H-type block copolymer having four branches of polystyrene (PS) blocks (number average molar mass (M-n) = 5000 Da per each branch) and poly(phenylsilsesquioxane) (PPSQ) (M-n = 40,000 Da) has been performed. Temperature dependent surface pressure isotherms and hysteresis experiments were combined with molecules aggregation number per surface micelle, leading to a self-consistent picture of the surface morphology and aggregation phenomena. In spite of the ladder structure of the PPSQ segment, the micelles mostly exist as spherical aggregates because of strong interaction between PS blocks.
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Related Researcher
- Sohn, Daewon
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF CHEMISTRY)