Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry

Tianjin, China

Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry

Tianjin, China
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Zhang G.,Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry | Zhai X.,Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry | Ma Z.,Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry | Jin L.,Key Laboratory of Functional Polymer Materials of Ministry of Education and Institute of Polymer Chemistry | And 4 more authors.
ACS Macro Letters | Year: 2012

A series of single-layer crystal patterns were observed in ultrathin films of 10 poly(ethylene oxide) fractions of molecular weights ranging from 2.02k to 932.0k g/mol. Morphology transitions between these different crystal patterns were quantitatively identified, and a morphology diagram with respect to supercooling and molecular weight dependencies was constructed. This will foster understanding of the macromolecular effects on the crystal pattern formation and selection critically associated with the parameters of molecular diffusion length and growth anisotropy. © 2011 American Chemical Society.

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