The effect of compatibilization and rheological properties of polystyrene and poly(dimethylsiloxane) on phase structure of polystyrene/poly(dimethylsiloxane) blends
Corresponding Author
C. Z. Chuai
Department of Chemical Engineering, Tianjin University of Science and Technology, 1038 Dagunan Road, 300222 Tianjin, People's Republic of China
Danish Polymer Centre, Building 423, Technical University of Denmark, DK-2800 Lyngby, Denmark
Department of Chemical Engineering, Tianjin University of Science and Technology, 1038 Dagunan Road, 300222 Tianjin, People's Republic of ChinaSearch for more papers by this authorS. Li
Department of Chemical Engineering, Tianjin University of Science and Technology, 1038 Dagunan Road, 300222 Tianjin, People's Republic of China
Search for more papers by this authorK. Almdal
Danish Polymer Centre, Risø National Laboratory, P.O. Box 49, DK-4000 Roskilde, Denmark
Search for more papers by this authorJ. Alstrup
Danish Polymer Centre, Risø National Laboratory, P.O. Box 49, DK-4000 Roskilde, Denmark
Search for more papers by this authorJ. Lyngaae-Jørgensen
Danish Polymer Centre, Building 423, Technical University of Denmark, DK-2800 Lyngby, Denmark
Search for more papers by this authorCorresponding Author
C. Z. Chuai
Department of Chemical Engineering, Tianjin University of Science and Technology, 1038 Dagunan Road, 300222 Tianjin, People's Republic of China
Danish Polymer Centre, Building 423, Technical University of Denmark, DK-2800 Lyngby, Denmark
Department of Chemical Engineering, Tianjin University of Science and Technology, 1038 Dagunan Road, 300222 Tianjin, People's Republic of ChinaSearch for more papers by this authorS. Li
Department of Chemical Engineering, Tianjin University of Science and Technology, 1038 Dagunan Road, 300222 Tianjin, People's Republic of China
Search for more papers by this authorK. Almdal
Danish Polymer Centre, Risø National Laboratory, P.O. Box 49, DK-4000 Roskilde, Denmark
Search for more papers by this authorJ. Alstrup
Danish Polymer Centre, Risø National Laboratory, P.O. Box 49, DK-4000 Roskilde, Denmark
Search for more papers by this authorJ. Lyngaae-Jørgensen
Danish Polymer Centre, Building 423, Technical University of Denmark, DK-2800 Lyngby, Denmark
Search for more papers by this authorAbstract
The compatibilization effect of polystyrene (PS)-poly(dimethylsiloxane) (PDMS) diblock copolymer (PS-b-PDMS) and the effect of rheological properties of PS and PDMS on phase structure of PS/PDMS blends were investigated using a selective extraction technique and scanning electron microscopy (SEM). The dual-phase continuity of PS/PDMS blends takes place in a wide composition range. The formation and the onset of a cocontinuous phase structure largely depend on blend composition, viscosity ratio of the constituent components, and addition of diblock copolymers. The width of the concentration region of the cocontinuous structure is narrowed with increasing the viscosity ratio of the blends and in the presence of the small amount diblock copolymers. Quiescent annealing shifts the onset values of continuity. The experimental results are compared with the volume fraction of phase inversion calculated with various theoretical models, but none of the models can account quantitatively for the observed data. © 2004 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 42: 898–913, 2004
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