Shear-induced phase separation in "nonentangled" oligomer mixture.
Shear-induced phase separation was found in "nonentangled" oligomer mixture. The sheared mixture in one phase becomes turbid and its scattering pattern exhibits so-called "butterfly pattern" which is commonly observed in shear-induced phase separation of semidilute polymer solutions. The origin of the shear-induced phase separation is found to be dynamical asymmetry due to the difference in the glass transition temperature.
Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan.
Mikihito
M
Takenaka
Masaaki
M
Miyazawa
Shotaro
S
Nishitsuji
Takeji
T
Hashimoto