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Ellipsometry as a probe of crystallization in binary blends of a sphere-forming diblock copolymer

✍ Scribed by Jessica L. Carvalho; Michael E. Somers; Kari Dalnoki-Veress

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
94 KB
Volume
49
Category
Article
ISSN
0887-6266

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✦ Synopsis

Abstract

Ellipsometry is used to measure the crystallization and melting temperature of a bidisperse blend of a crystalline‐amorphous diblock copolymer. Binary blends of sphere‐forming poly(butadiene‐ethylene oxide) (PB‐PEO) of two different molecular weights are prepared. The two PB‐PEO diblocks that are used share the same amorphous majority PB block length but different crystalline PEO minority block length. As the concentration of higher molecular weight diblock in the blend is increased, the size of the PEO spherical domains swell, providing access to the full range of domain sizes between the limits of the two neat diblock components. The change in domain size is consistent with a monotonic change in both the crystallization and melting temperatures. © 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2011

📜 SIMILAR VOLUMES

Ellipsometry as a probe of crystallizati
Ellipsometry as a probe of crystallization kinetics in thin diblock copolymer films
✍ J. L. Carvalho; M. V. Massa; K. Dalnoki-Veress 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 175 KB

## Abstract We present results on the use of ellipsometry as a novel probe for the crystallization kinetics in thin films of a diblock copolymer. Ellipsometry makes use of the change in polarization induced upon the reflection of light from a film‐covered substrate to enable the calculation of the