Role of Molecular Architecture in Mechanical ... - ACS Publications

Role of Molecular Architecture in Mechanical Failure of Glassy/Semicrystalline Block Copolymers: ECE ... Volume 36, Number 7, April 8, 2003, pp 2190âˆ...
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Macromolecules 2003, 36, 6280

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T. J. Hermel, S. F. Hahn, K. A. Chaffin, W. W. Gerberich, and F. S. Bates*: Role of Molecular Architecture in Mechanical Failure of Glassy/Semicrystalline Block Copolymers: ECE vs CECEC Lamellae. Volume 36, Number 7, April 8, 2003, pp 2190-2193. We inadvertently overlooked several prior studies dealing with the mechanical properties of lamellae forming block copolymers in this recent communication. Two publications by Cohen et al.1,2 that address aligned PS-PB-PS triblock materials stand out as particularly relevant. Although different in detail (e.g., glassy/ semicrystalline vs glassy/rubbery materials), these two studies clearly are related, and conclusions drawn regarding the failure mechanisms of either system must take both into account. Also, the entanglement molecular weight noted for poly(cyclohexylethylene) (PCHE) was incorrect. The correct value is 4 × 104 g/mol.3 1. Cohen, Y.; Albalak, R. J.; Dair, B. J.; Capel, M. S.; Thomas, E. L. Macromolecules 2000, 33, 6502. 2. Cohen, Y.; Brinkmann, M.; Thomas, E. L. J. Chem. Phys. 2001, 114, 33, 6502. 3. Zhao, J.; Hahn, S. F.; Hucul, D. A.; Meunier, D. M. Macromolecules 2001, 34, 1737. MA030338O 10.1021/ma030338o Published on Web 07/17/2003