A thin film of SBS block copolymer with a characteristic microphase bundle
A thin film of styrene-butadiene-styrene block copolymer with a characteristic microphase bundle is shown on this picture. Areas containing butadiene are softer when styrene and thats why they appear as depressions in the film on AFm-image. Measuring the percentage of high and low phases on the histogram one can estimate the percentage of styrene and butadiene in this polymer.
(The image is obtained on Nanoscope III, Digital Instruments, USA)
© Bolshakova Anastasia. Chemistry department of MSU, Russia
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