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Dilute solutions and phase behavior of polydisperse A-b-(A-co-B) diblock copolymers
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SYSNO ASEP 0326153 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Dilute solutions and phase behavior of polydisperse A-b-(A-co-B) diblock copolymers Title Zředěné roztoky a fázové chování polydispersních blokových kopolymerů A-b-(A-co-B) Author(s) Gromadzki, Daniel (UMCH-V) RID
Lokaj, Jan (UMCH-V)
Šlouf, Miroslav (UMCH-V) RID, ORCID
Štěpánek, Petr (UMCH-V) RID, ORCIDSource Title Polymer. - : Elsevier - ISSN 0032-3861
Roč. 50, č. 11 (2009), s. 2451-2459Number of pages 9 s. Language eng - English Country GB - United Kingdom Keywords diblock copolymer ; dilute solution properties ; microphase separation Subject RIV CD - Macromolecular Chemistry CEZ AV0Z40500505 - UMCH-V (2005-2011) UT WOS 000266319100014 DOI 10.1016/j.polymer.2009.03.022 Annotation The effect of polydispersity on dilute solution properties and microphase separation of polydisperse high-molecular-weight (M-w > 10(5) g Mol(-1)) polystyrene-block-poly(styrene-co-acrylonitrile) diblock copolymers, PS-block-P(S-co-AN), was studied in this work. For experiments, a series of diblock copolymers with variable weight fractions of acrylonitrile units (WAN = 0.08-0.29) and length of block P(S-co-AN) was synthesized using nitroxide-mediated radical polymerization (NMP) technique, namely, by chain extension of nitroxide-terminated polystyrene (PS-TEMPO). It was demonstrated by means of SAXS and TEM that a transition from a lamellar (LAM) to irregular face-centered-cubic (FCC) morphology occurred with increasing volume fraction of P(S-co-AN) block. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2010
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