Rheological investigation of form relaxation and interface relaxation processes in polymer blends

• DOI: 10.1007/bf00342457
• Publication Date: 2004-10-26T20:00:55Z
• Authors: R. -E. Riemann; H. -J. Cantow; C. Friedrich
• Keywords: 01 natural sciences; 0104 chemical sciences

Transmission electron microscopical and rheological investigations have been performed on polymer blend systems of the type A/B, A/A-b-B/B, and A/C-b-B/B, where B is poly(methyl methacrylate) as the continuous and A is polystyrene as the dispersed phase. A-b-B is the corresponding diblock copolymer, and C-b-B is a diblock copolymer with poly(cyclohexyl methacrylate) (C) being thermodynamically miscible with A. The sphere-size distribution was estimated from the TEM data and found to be monomodal for all blends. Smaller sphere sizes in the A/C-b-B/B blends compared with the A/A-b-B/B blends prove the efficiency of the enthalpic acting compatibilizer.