DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2015 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

CPP: Fachverband Chemische Physik und Polymerphysik

CPP 44: P9: Crystallization, Nucleation and Self Assembly

CPP 44.3: Poster

Wednesday, March 18, 2015, 10:00–13:00, Poster A

Direct Observation of Crystallization through Surface Wrinkling in Polymer Thin Film — •Peng Zhang1, Gonzalo Santoro1, Sarathlal K. Vayalil1, Ezzeldin Metwalli2, Peter Müller-Buschbaum2, Tianbai He3, and Stephan V. Roth11Deutsches Elektronen Synchrotron, Notkestr. 85, 22607 Hamburg, Germany — 2Technische Universität München, Physik-Department, LS E13, James-Franck-Str.1, 85747 Garching, Germany — 3State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Polymer crystallization is a well concerned and yet unclear phase transition from amorphous coils to well organized nanoscale lamellae. Among the research areas of interest are fundamental issues relating to the early stages of polymer crystallization.1,2 Here we explore the structural transition at the early stages of ordering towards crystallization in diblock copolymer thin films. The structure change at early stages of crystallization is unraveled from a perspective of cooling induced density change. The diblock copolymer thin film offers a well confined crystallization case where the density change can be linked with the lateral molecular diffusion. Moreover, the cooling induced surface wrinkling promotes the nucleation and crystal growth in polymer. These findings provide us a new perspective to understand the whole scenario of polymer crystallization. [1] Strobl, G. Eur. Phys. J. E 3, 165 (2000); [2]Cheng, S. Phase Transitions in Polymers: The Role of Metastable States; Elsevier Science: Amsterdam, 2008.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2015 > Berlin