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Linking Models of Polymerization and Dynamics to Predict Branched Polymer Structure and Flow (2011)
Journal Article
Read, D. J., Auhl, D., Das, C., den Doelder, J., Kapnistos, M., Vittorias, I., & McLeish, T. C. (2011). Linking Models of Polymerization and Dynamics to Predict Branched Polymer Structure and Flow. Science, 333(6051), 1871-1874. https://doi.org/10.1126/science.1207060

We present a predictive scheme connecting the topological structure of highly branched entangled polymers, with industrial-level complexity, to the emergent viscoelasticity of the polymer melt. The scheme is able to calculate the linear and nonlinear... Read More about Linking Models of Polymerization and Dynamics to Predict Branched Polymer Structure and Flow.

The effect of boundary curvature on the stress response of linear and branched polyethylenes in a contraction-expansion flow (2011)
Journal Article
Hassell, D. G., Lord, T., Scelsi, L., Klein, D., Auhl, D., Harlen, O., …Mackley, M. (2011). The effect of boundary curvature on the stress response of linear and branched polyethylenes in a contraction-expansion flow. Rheologica Acta, 50(7-8), 675-689. https://doi.org/10.1007/s00397-011-0551-4

The effect of flow-boundary curvature on the principal stress difference (PSD) profiles observed through a contraction–expansion (CE) slit flow is evaluated for three different polyethylenes exhibiting increasing levels of branching. Studies were per... Read More about The effect of boundary curvature on the stress response of linear and branched polyethylenes in a contraction-expansion flow.

Cross-slot extensional rheometry and the steady-state extensional response of long chain branched polymer melts (2011)
Journal Article
Auhl, D., Hoyle, D. M., Hassell, D., Lord, T., Mackley, M., Harlen, O., & McLeish, T. (2011). Cross-slot extensional rheometry and the steady-state extensional response of long chain branched polymer melts. Journal of Rheology, 55(4), 875-900. https://doi.org/10.1122/1.3589972

Stress-optical measurements at a flow stagnation point in confined geometries such as the cross-slot provide an elegant way to perform extensional testing for polymer melts. This technique is especially useful for samples which have a steady-state th... Read More about Cross-slot extensional rheometry and the steady-state extensional response of long chain branched polymer melts.

Controlling the Self-Assembly of Binary Copolymer Mixtures in Solution through Molecular Architecture (2011)
Journal Article
Greenall, M. J., Schuetz, P., Furzeland, S., Atkins, D., Buzza, D. M. A., Butler, M. F., & McLeish, T. C. (2011). Controlling the Self-Assembly of Binary Copolymer Mixtures in Solution through Molecular Architecture. Macromolecules, 44(13), 5510-5519. https://doi.org/10.1021/ma2008546

We present a combined experimental and theoretical study on the role of copolymer architecture in the self-assembly of binary PEO–PCL mixtures in water–THF and show that altering the chain geometry and composition of the copolymers can control the fo... Read More about Controlling the Self-Assembly of Binary Copolymer Mixtures in Solution through Molecular Architecture.

A Coarse-Grained Molecular Model of Strain-Hardening for Polymers in the Marginally Glassy State (2011)
Journal Article
Nayak, K., Read, D. J., McLeish, T. C., Hine, P. J., & Tassieri, M. (2011). A Coarse-Grained Molecular Model of Strain-Hardening for Polymers in the Marginally Glassy State. Journal of Polymer Science Part B: Polymer Physics, 49(13), 920-938. https://doi.org/10.1002/polb.22263

We have developed a simple bead-spring model, intended to mimic the internal dynamics of individual polymer chains in the region of the glass transition temperature. Entanglement constraints on the chains are approximated by “sliplinks.” We model the... Read More about A Coarse-Grained Molecular Model of Strain-Hardening for Polymers in the Marginally Glassy State.

Controlling the micellar morphology of binary PEO-PCL block copolymers in water-THF through controlled blending (2011)
Journal Article
Schuetz, P., Greenall, M. J., Bent, J., Furzeland, S., Atkins, D., Butler, M. F., …Buzza, D. M. A. (2011). Controlling the micellar morphology of binary PEO-PCL block copolymers in water-THF through controlled blending. Soft Matter, 7(2), 749-759. https://doi.org/10.1039/c0sm00938e

We study both experimentally and theoretically the self-assembly of binary polycaprolactone–polyethylene oxide (PCL–PEO) block copolymers in dilute solution, where self-assembly is triggered by changing the solvent from the common good solvent THF to... Read More about Controlling the micellar morphology of binary PEO-PCL block copolymers in water-THF through controlled blending.