The Morphology in Film of Polystyrene-b-Polylactide after Temperature Annealing Process

Ting Chen; Jia Nan Zhang

doi:10.4028/www.scientific.net/AMR.1095.647

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1095The Morphology in Film of...

The Morphology in Film of Polystyrene-b-Polylactide after Temperature Annealing Process

Abstract:

Polystyrene-b-Polylactide (PS-b-PLA) was dissolved in chlorobenzene, and the development of the micro-phase separation morphology in asymmetric PS-b-PLA thin films was investigated by AFM. The thin films were prepared by spinning casting at the speed of 6000 r/min for 60s on Si substrates. We get different morphologies of PS-b-PLA thin film by changing the annealing temperature from 150 °C to 170 °C. In addition, the annealing time influences the morphology of the film. When the annealing time increased from 2 hours to 15 hours and 30 hours, the morphology transformed from parallel to perpendicular to the substrate. By applying temperature gradients, we can control the morphology and orientation of the Block copolymer film self-assembly.

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Periodical:

Advanced Materials Research (Volume 1095)

Pages:

647-650

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1095.647

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Online since:

March 2015

Authors:

Ting Chen*, Jia Nan Zhang

Keywords:

Block Copolymer, Morphology, Polystyrene-b-Polylactide (PS-b-PLA), Temperature Annealing

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