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Showing 1 to 13 of 13 for “"Morphological Transitions"”.
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Thermodynamic and morphological transitions in crystalline and soft material interfaces
… are defects present in all materials. Interface transitions are characterized by abrupt changes in interface structure, chemistry and/or morphology under suitable conditions. They exist in many material systems and often produce profound changes in material properties. Several interface …
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MATHEMATICS OF URBAN MORPHOLOGY: A Cross-Scale Topological Approach to Analyzing Morphological Transitions in Urban Spatial Structure
L'abstract è presente nell'allegato / the abstract is in the attachment
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Morphological Studies of Crystallization in Thin Films of PEO/PMMA Blends
Morphological development during crystallization of thin films of poly(ethylene oxide) (PEO) / poly(methyl methacrylate) (PMMA) blends has been reported. Studies have focused on the effects of the blend composition, PMMA molecular weight, film thickness, and crystallization temperature on the …
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Assembly and post-assembly manipulation of polyelectrolyte multilayers for control of bacterial attachment and viability
… values. These multilayers underwent a variety of morphological transitions depending on the pH of PAH adsorption. At mid-range pH values, the film stiffened and promoted aqueous bacterial attachment.
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Microphase Separation Studies in Styrene-Diene Block Copolymer-based Hot-Melt Pressure- Sensitive Adhesives
… peaks of the SAXS intensity profiles. The morphological parameters derived from SAXS analysis corresponded to features such as the size and extent of ordering of the microphase separated polystyrene domains. The variation in these parameters with respect to temperature and adhesive …
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A universal approach to stabilize water-oil interface via surfactant self-assembly
… experimental results, specifically in terms of morphological transitions, indicating the robustness of the computational simulation as a supplement to the mesoscale experimental systems. Third, an exhaustive and comprehensive overview of the state-of-the-art research on liquid-in-liquid 3D …
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Computational study of self-assembly in block copolymer/superparamagnetic nanoparticle composites under external magnetic fields
… under external magnetic fields. A variety of morphological transitions are observed based on the field orientation, nanoparticle loading, and selectivity of the nanoparticles for the blocks. For symmetric block copolymers, chaining of superparamagnetic nanoparticles under in-plane magnetic …
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Controlling morphology of multi-component block copolymer based materials
… in the triblock. For certain blend compositions, morphological transitions from the lamellar to cylindrical and bicontinuous structures were also observed, even though the overall composition in the blend would be expected to favor the lamellar microstructure. This was found to result from the …
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Phase Behavior of Poly(Caprolactone) Based Polymer Blends As Langmuir Films at the Air/Water Interface
… PCL crystallization along with other phase transitions in PCL-based polymer blends are studied as Langmuir films at the air/water (A/W) interface. In order to understand the phase behavior of PCL-based blends, surface pressure induced crystallization of PCL in single-component Langmuir …
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Photo-reactive Surfactant and Macromolecular Supramolecular Structures
… rheological experiments revealed micellar morphological transitions of 12-2-12 in water and water:methanol (1:1 vol). Electrospinning efforts of 12-2-12 from water did not produce fibers at any concentration, however, electrospinning 12-2-12 in water:methanol at concentrations greater than …
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Crystalline Morphologies of Poly(butadiene)-b-Poly(ethylene oxide) Block Copolymers in n-Heptane
… units, is the driving force that dictates the morphological development, therefore crystallization breaks out the melt morphology. These studies, demonstrated that the PB-b-PEO block copolymers are a promising system models for developing a general route towards tunable crystalline …
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Structure Formation Mechanism of Isoporous Block copolymer Membranes
… fraction is sufficiently high to induce morphological transitions. The block copolymer morphologies resulting from microphase separation in this region were systematically investigated by AFM and SEM as a function of polymer concentration, solvent composition and evaporation times before …
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Shear-induced alignment in block copolymer solutions
… of moduli over a range of temperatures and the morphological transitions were detected. This led us to conclude that dioctyl phthalate is a selective solvent for this diblock copolymer (ST) and a transition from the initially lamellar toward a cylindrical or spherical morphology takes place …