Rheology and molecular weight distribution of hyperbranched polymers

Buzza, D. M.A.; Groves, D. J.; McLeish, T. C.B.; Parker, D.; Keeney, A. J.; Feast, W. J.; Suneel

doi:10.1021/ma020820r

Self-assembly of two-dimensional colloidal clusters by tuning the hydrophobicity, composition, and packing geometry (2013)
Journal Article
Law, A. D., Auriol, M., Smith, D., Horozov, T. S., & Buzza, D. M. A. (2013). Self-assembly of two-dimensional colloidal clusters by tuning the hydrophobicity, composition, and packing geometry. Physical review letters, 110(13), 0 - 0. https://doi.org/10.1103/physrevlett.110.138301

We study the structure of binary monolayers of large (3 m diameter) very hydrophobic (A) and large (3 m diameter) hydrophilic (B) or small (1 m diameter) hydrophilic (C) silica particles at an octanewater interface. By tuning the composition and pack... Read More about Self-assembly of two-dimensional colloidal clusters by tuning the hydrophobicity, composition, and packing geometry.

A multi-disciplinary study of insect adhesion : functional biomechanics and applications (2013)
Thesis
Anyon, M. J. (2013). A multi-disciplinary study of insect adhesion : functional biomechanics and applications. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4214133

The ability of insects to successfully attach to a wide variety of surfaces with seemingly little to no effort has fascinated naturalists and researchers for hundreds of years. The observation of a fly climbing up a window, or spider walking upside... Read More about A multi-disciplinary study of insect adhesion : functional biomechanics and applications.

Effect of particulate contamination on adhesive ability and repellence in two species of ant (Hymenoptera; Formicidae) (2012)
Journal Article
Anyon, M. J., Orchard, M. J., Buzza, D. M. A., Humphries, S., & Kohonen, M. M. (2012). Effect of particulate contamination on adhesive ability and repellence in two species of ant (Hymenoptera; Formicidae). The journal of experimental biology, 215(4), 605-616. https://doi.org/10.1242/jeb.063578

Tarsal adhesive pads are crucial for the ability of insects to traverse their natural environment. Previous studies have demonstrated that for both hairy and smooth adhesive pads, significant reduction in adhesion can occur because of contamination o... Read More about Effect of particulate contamination on adhesive ability and repellence in two species of ant (Hymenoptera; Formicidae).

The structure and melting transition of two-dimensional colloidal alloys (2011)
Journal Article
Law, A. D., Horozov, T. S., & Buzza, D. M. A. (2011). The structure and melting transition of two-dimensional colloidal alloys. Soft matter, 7(19), 8923-8931. https://doi.org/10.1039/c1sm05446e

We study theoretically the structure and melting transition of two-dimensional (2D) binary mixtures of colloidal particles interacting via a dipole-dipole potential. Using a lattice sum method, we find that at zero temperature (T = 0) the system form... Read More about The structure and melting transition of two-dimensional colloidal alloys.

Controlling the self-assembly of binary copolymer mixtures in solution through molecular architecture (2011)
Journal Article
McLeish, T. C. B., Butler, M. F., Buzza, D. M. A., Atkins, D., Furzeland, S., Schuetz, P., & Greenall, M. J. (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.

Structure and interactions of colloidal particles at fluid interfaces (2011)
Thesis
Law, A. D. (2011). Structure and interactions of colloidal particles at fluid interfaces. (Thesis). University of Hull. Retrieved from https://hull-repository.worktribe.com/output/4211471

The structure and stability of colloidal monolayers depends crucially on the effective pair interaction potential between colloidal particles. In the first part of the thesis, we present two novel methods for extracting the pair potential from the tw... Read More about Structure and interactions of colloidal particles at fluid interfaces.

Two-dimensional colloidal alloys (2011)
Journal Article
Law, A. D., Buzza, D. M. A., & Horozov, T. S. (2011). Two-dimensional colloidal alloys. Physical review letters, 106(12), Article ARTN 128302. https://doi.org/10.1103/physrevlett.106.128302

We study the structure of mixed monolayers of large (3μm diameter) and small (1μm diameter) very hydrophobic silica particles at an octane-water interface as a function of the number fraction of small particles ξ. We find that a rich variety of two-d... Read More about Two-dimensional colloidal alloys.

Controlling the micellar morphology of binary PEO-PCL block copolymers in water-THF through controlled blending (2010)
Journal Article
Schuetz, P., Greenall, M. J., Bent, J., Furzeland, S., Atkins, D., Butler, M. F., McLeish, T. C. B., & 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.

Obtaining Effective Pair Potentials in Colloidal Monolayers Using a Thermodynamically Consistent Inversion Scheme (2010)
Journal Article
Law, A. D., & Buzza, D. M. A. (2010). Obtaining Effective Pair Potentials in Colloidal Monolayers Using a Thermodynamically Consistent Inversion Scheme. Langmuir : the ACS journal of surfaces and colloids, 26(10), 7107-7116. https://doi.org/10.1021/la9037233

The structure and stability of colloidal monolayers depends crucially on the effective pair interaction potential u(r) between colloidal particles. In this study, we construct a novel method for extracting u(r) from the two-dimensional (2D) radial di... Read More about Obtaining Effective Pair Potentials in Colloidal Monolayers Using a Thermodynamically Consistent Inversion Scheme.

Determination of interaction potentials of colloidal monolayers from the inversion of pair correlation functions: A two-dimensional predictor-corrector method (2009)
Journal Article
Law, A. D., & Buzza, D. M. A. (2009). Determination of interaction potentials of colloidal monolayers from the inversion of pair correlation functions: A two-dimensional predictor-corrector method. The Journal of chemical physics, 131(9), 094704 - 094704. https://doi.org/10.1063/1.3216568

The structure and stability of colloidal monolayers depend crucially on the effective pair potential u (r) between colloidal particles. In this paper, we develop a two-dimensional (2D) predictor-corrector method for extracting u (r) from the pair cor... Read More about Determination of interaction potentials of colloidal monolayers from the inversion of pair correlation functions: A two-dimensional predictor-corrector method.

Micelle Formation in Block Copolymer/Homopolymer Blends: Comparison of Self-Consistent Field Theory with Experiment and Scaling Theory (2009)
Journal Article
Greenall, M. J., Buzza, M., & McLeish, T. C. B. (2009). Micelle Formation in Block Copolymer/Homopolymer Blends: Comparison of Self-Consistent Field Theory with Experiment and Scaling Theory. Macromolecules, 42(15), 5873 - 5880. https://doi.org/10.1021/ma9000594

We present a self-consistent Field theory (SCFT) Study of spherical micelle formation in a blend of poly(styrene-butadiene) diblocks and homopolystyrene. The micelle core radii, corona thicknesses, and critical micelle concentrations are calculated a... Read More about Micelle Formation in Block Copolymer/Homopolymer Blends: Comparison of Self-Consistent Field Theory with Experiment and Scaling Theory.

Micelle shape transitions in block copolymer/homopolymer blends: comparison of self-consistent field theory with experiment (2009)
Journal Article
Greenall, M. J., Buzza, D. M. A., & McLeish, T. C. B. (2009). Micelle shape transitions in block copolymer/homopolymer blends: comparison of self-consistent field theory with experiment. The Journal of chemical physics, 131(3), Article 034904. https://doi.org/10.1063/1.3170938

Diblock copolymers blended with homopolymer may self-assemble into spherical, cylindrical, or lamellar aggregates. Transitions between these structures may be driven by varying the homopolymer diblock molecular weight or composition. Using self-consi... Read More about Micelle shape transitions in block copolymer/homopolymer blends: comparison of self-consistent field theory with experiment.

Are polyelectrolyte dendrimers stimuli responsive? (2007)
Journal Article
Giupponi, G., Buzza, D. M. A., & Adolf, D. B. (2007). Are polyelectrolyte dendrimers stimuli responsive?. Macromolecules, 40(16), 5959-5965. https://doi.org/10.1021/ma070609l

Using a molecular dynamics and mean field theory approach which explicitly accounts for free ions, we study the conformation of polyelectrolyte dendrimers for different generation numbers, spacer lengths, charge distributions and ionic strengths. We... Read More about Are polyelectrolyte dendrimers stimuli responsive?.

Monte Carlo simulation of random branching in hyperbranched polymers (2007)
Journal Article
Richards, E. L., Buzza, D. M. A., & Davies, G. R. (2007). Monte Carlo simulation of random branching in hyperbranched polymers. Macromolecules, 40(6), 2210-2218. https://doi.org/10.1021/ma0700126

We study the branching statistics of hyperbranched polymers formed from a one-pot melt polymerization of AB2 monomers via Monte Carlo simulation. To simulate the reaction ensemble, we use a 3D percolation-type model where each lattice site of a cubic... Read More about Monte Carlo simulation of random branching in hyperbranched polymers.

Entanglement transition of randomly branched polymers in the hyperbranched class (2006)
Journal Article
Kunamaneni, S., Buzza, D. M. A., Read, D. J., Parker, D., Kenwright, A. M., Feast, W. J., & Larsen, A. L. (2006). Entanglement transition of randomly branched polymers in the hyperbranched class. Macromolecules, 39(19), 6720-6736. https://doi.org/10.1021/ma0603276

We study the melt rheology of randomly branched polymers in the hyperbranched polymer (HBP) class which are formed by the co-condensation of AB and AB2 type monomers. Specifically, we study the effect of branch length Mx on the entanglement transitio... Read More about Entanglement transition of randomly branched polymers in the hyperbranched class.

A Monte Carlo study of amphiphilic dendrimers: Spontaneous asymmetry and dendron separation (2005)
Journal Article
Giupponi, G., & Buzza, D. M. A. (2005). A Monte Carlo study of amphiphilic dendrimers: Spontaneous asymmetry and dendron separation. The Journal of chemical physics, 122(19), Article 194903. https://doi.org/10.1063/1.1896347

We study via Monte Carlo simulation the conformation of amphiphilic dendrimers for which terminal monomers (t) and internal monomers (i) interact differently with the solvent (s). Specifically, we have studied g=3,6 dendrimers as a function of χit, χ... Read More about A Monte Carlo study of amphiphilic dendrimers: Spontaneous asymmetry and dendron separation.

Rheology of fractionated and unfractionated hyperbranched polyesters (2004)
Journal Article
Kunamaneni, S., Buzza, D. M. A., De Luca, E., & Richards, R. W. (2004). Rheology of fractionated and unfractionated hyperbranched polyesters. Macromolecules, 37(24), 9295-9297. https://doi.org/10.1021/ma034932%2B

Monte Carlo simulation of dendrimers in variable solvent quality (2004)
Journal Article
Giupponi, G., & Buzza, D. M. A. (2004). Monte Carlo simulation of dendrimers in variable solvent quality. The Journal of chemical physics, 120(21), 10290-10298. https://doi.org/10.1063/1.1714829

The properties of g=1-6 dendrimers in variable solvent quality were studied using Monte Carlo simulation and Flory theory. It was found that the radius of gyration (Rg collapses significantly while going from athermal to extreme poor solvent conditio... Read More about Monte Carlo simulation of dendrimers in variable solvent quality.

Power law polydispersity and fractal structure of hyperbranched polymers (2004)
Journal Article
Buzza, D. M. (2004). Power law polydispersity and fractal structure of hyperbranched polymers. European Physical Journal E, 13(1), 79-86. https://doi.org/10.1140/epje/e2004-00042-3

Using the complementary approaches of Flory theory and the overlap function, we study the molecular weight distribution and conformation of hyperbranched polymers formed by the melt polycondensation of A-RN0-Bf - 1monomers in their reaction bath clos... Read More about Power law polydispersity and fractal structure of hyperbranched polymers.

Rheology and molecular weight distribution of hyperbranched polymers (2002)
Journal Article
Buzza, D. M., Groves, D. J., McLeish, T. C., Parker, D., Keeney, A. J., Feast, W. J., & Suneel. (2002). Rheology and molecular weight distribution of hyperbranched polymers. Macromolecules, 35(25), 9605-9612. https://doi.org/10.1021/ma020820r

We study the melt rheology and molecular weight distribution of four short chain branched hyperbranched polyesters with different molecular weights and containing branched monomers of various alkyl chain lengths n (2 → 4; n is the number of CH2 group... Read More about Rheology and molecular weight distribution of hyperbranched polymers.

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