1. School of Chemical Engineering; Hanoi University of Science and Technology; No 1 Dai Co Viet, Hanoi Viet Nam
2. Center for Rubber Science and Technology; D2A Builiding, No 1 Dai Co Viet, Hanoi Viet Nam
3. Department of Materials Science and Technology; Nagaoka University of Technology; 1603-1 Kamitomioka-cho, Nagaoka, Niigata Japan 940-2188