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Buckling Instabilities in Polymer Brush Surfaces via Postpolymerization Modification.

ABSTRACT: We report a simple route to engineer ultrathin polymer brush surfaces with wrinkled morphologies using post-polymerization modification (PPM), where the length scale of the buckled features can be tuned from hundreds of nanometers to one micrometer using PPM reaction time. We show that partial crosslinking of the outer layer of the polymer brush under poor solvent conditions is critical to obtain wrinkled morphologies upon swelling. Characterization of the PPM kinetics and swelling behavior via ellipsometry and the through-thickness composition profile via time-of-flight secondary ion mass spectroscopy (ToF-SIMS) provided keys insight into parameters influencing the buckling behavior.

SUBMITTER: Guo W

PROVIDER: S-EPMC5831323 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature

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Buckling Instabilities in Polymer Brush Surfaces via Postpolymerization Modification.

Guo Wei W Reese Cassandra M CM Xiong Li L Logan Phillip K PK Thompson Brittany J BJ Stafford Christopher M CM Ievlev Anton V AV Lokitz Bradley S BS Ovchinnikova Olga S OS Patton Derek L DL

Macromolecules 20171030 21

We report a simple route to engineer ultrathin polymer brush surfaces with wrinkled morphologies using post-polymerization modification (PPM), where the length scale of the buckled features can be tuned from hundreds of nanometers to one micrometer using PPM reaction time. We show that partial crosslinking of the outer layer of the polymer brush under poor solvent conditions is critical to obtain wrinkled morphologies upon swelling. Characterization of the PPM kinetics and swelling behavior via ...[more]

PMID: 29503464

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