Abstract
The linear dynamic mechanical properties of nearly symmetric 55:45 PEP-PEE diblock copolymers and the corresponding homopolymers are described. The results show the influence of composition fluctuations on the rheological properties around the microphase separation transition and confirms the first-order nature of this transition for hearly symmetric samples dynamic shear measurements obtained after a temperature quench from just above to just below the microphase separation temperature demonstrate the ability to supercool the disordered material and provide a measure of the subsequent ordering kinetics
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