I have domains of PEO from spin coating of diblock copolymer PS-PEO in toluene. How can I obtain info about the number of PEO in each domain?

28 February 2016 1 9K Report

PS-PEO is a diblock copolymer that undergoes phase separation upon dissolving in toluene and spin coating on a surface. I would like to know how many PEO units gather in every domain. Is there any theoretical/practical way to measure that?

Thanks

Leonid V Vladimirov

There certainly should be some distribution in amount of PEO over domains, thus there is NO way to to measure the amount of PEO in EVERY domain.

The most common method to evaluate it - is Scanning Electron Microscopy of the samples split at temperature of Liquid Nitrogen.

Regards, Leonid

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