Order-order transition among lamellae, \textit{Fddd}, and gyroid in diblock copolymer melts

Mikihito Takenaka; Myung Im Kim; Tsutomu Wakada; Satoshi Akasaka; Shotaro Nishitsuji; Kenji Saijo; Hirokazu Hasegawa; Kazuki Ito

Order-order transition among lamellae, \textit{Fddd}, and gyroid in diblock copolymer melts

ORAL

Abstract

We firstly found a Disorder-Gyroid-\textit{Fddd}-Lamellae transition behavior found poly(styrene-$b$-isoprene) (S-I) diblock copolymer melts in previous study. In this study, we will present the dynamics of order-order transition (OOT) among lamellae, \textit{Fddd}, and gyroid. we investigated the dynamics of OOT by using time-resolved small angle X-ray scattering with Synchrotron radiation X-ray source. We found that \textit{Fddd} structure was formed as a metastable structure during the OOT from lamellae to gyroid induced by temperature jump.

March 16, 2009, 8:00 AM – March 16, 2009, 8:12 AM

Authors

Mikihito Takenaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University
- Kyoto University
Myung Im Kim
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University
- Kyoto University
Tsutomu Wakada
- Kyoto University
Satoshi Akasaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University
- Kyoto University
Shotaro Nishitsuji
- Kyoto University
Kenji Saijo
- Kyoto University
Hirokazu Hasegawa
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University
- Kyoto University
Kazuki Ito
- Riken