Relevant bibliographies by topics / Reduced reptation

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  2. Dissertations / Theses

Academic literature on the topic 'Reduced reptation'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Reduced reptation"

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Opsteen, J. A., J. J. L. M. Cornelissen, and J. C. M. van Hest. "Block copolymer vesicles." Pure and Applied Chemistry 76, no. 7-8 (2004): 1309–19. http://dx.doi.org/10.1351/pac200476071309.

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Amphiphilic block copolymers have the ability to assemble into multiple morphologies in solution. Depending on the length of the hydrophilic block, the morphology can vary from spherical micelles, rods, and vesicles to large compound micelles (LCMs). Vesicle formation is favored upon an increase in total molecular weight of the block copolymer, that is, an increasing bending modulus (K). Owing to the polymeric character of this type of vesicle (also called polymersomes), they possess remarkable properties. The diffusion of (polymeric) amphiphiles in these vesicles is very low compared to lipos
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2

Mishra, Garima, Lavi S. Bigman, and Yaakov Levy. "ssDNA diffuses along replication protein A via a reptation mechanism." Nucleic Acids Research 48, no. 4 (2020): 1701–14. http://dx.doi.org/10.1093/nar/gkz1202.

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Abstract Replication protein A (RPA) plays a critical role in all eukaryotic DNA processing involving single-stranded DNA (ssDNA). Contrary to the notion that RPA provides solely inert protection to transiently formed ssDNA, the RPA–ssDNA complex acts as a dynamic DNA processing unit. Here, we studied the diffusion of RPA along 60 nt ssDNA using a coarse-grained model in which the ssDNA–RPA interface was modeled by both aromatic and electrostatic interactions. Our study provides direct evidence of bulge formation during the diffusion of ssDNA along RPA. Bulges can form at a few sites along the
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Grest, Gary S., Kurt Kremer, and Michael Murat. "What can we Learn from Molecular Dynamics Simulations of Macromolecular Liquids?" MRS Proceedings 177 (1989). http://dx.doi.org/10.1557/proc-177-77.

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ABSTRACTWe describe how molecular dynamics simulations for a relatively simple coarse grained model can be very useful for investigating the static and dynamic properties of polymers and other macromolecular liquids. We show that it is important to use a simplified coarse grained model instead of a detailed microscopic model if one is interested in studying on modern supercomputers large systems which also relax slowly. As examples we present results for isolated star polymers with f-arms and diluted gelation/percolation clusters. We find in agreement with recent neutron scattering experiments
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Kimmich, R., S. Stapf, R. O. Seitter, P. Callaghan, and E. Khozina. "Molecular Dynamics of Monomer, Oligomer, and Polymer Liquids in Porous Media: A Field-Cycling Nmr Relaxometry and NMR Field-Gradient Diffusometry Study." MRS Proceedings 366 (1994). http://dx.doi.org/10.1557/proc-366-189.

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ABSTRACTThe molecular dynamics of fluids in porous media has been studied using field-cycling NMR relaxometry and NMR field-gradient diffusometry. The frequency dependences of the 1H and 2H spin-lattice relaxation times T1 of various liquids in porous glass reveal weak and strong adsorption behaviour depending on the polarity of the adsorbates. Correlation times eight orders of magnitude longer than in bulk have been observed. The T1 dispersion moreover reflects geometrical details of the matrix in a length scale three orders of magnitude longer than the adsorbate molecules. The mean-square di
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Li, Chunhua, Jun Jiang, Miriam H. Rafailovich, and Jonathan C. Sokolov. "Melt Fracture of Polymer Thin Film at Strongly Attractive Surfaces." MRS Proceedings 890 (2005). http://dx.doi.org/10.1557/proc-0890-y08-31.

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ABSTRACTIn this study, we report an interesting phenomenon of “melt fracture” which was observed when a high viscosity film dewets from a film of lower viscosity. We propose that this phenomena is similar to the “melt fracture” or “shark skin” that is observed when extruding bulk polymer. We hypothesized that the “melt fracture” occurs as a result of shear which is imposed by the dewetting layer on the visco-elastic lower layer. The dewetting layer is adhered to the lower layer via entanglements across the polymer/polymer interface. When the other interface of the liquid film is adsorbed to an
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6

Kanai, Yosuke, and Jeffrey C. Grossman. "QMC Assessments of Weak-interaction Described by DFT within various XC approximations / Effects of Carbon Nanotube Oxidation on Molecular Interactions." MRS Proceedings 1084 (2008). http://dx.doi.org/10.1557/proc-1084-s05-03.

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ABSTRACTThis paper first presents the fixed-node diffusion and reptation quantum Monte Carlo (QMC) assessment of density functional theory (DFT) description of weak molecular interactions within several exchange-correlation (XC) approximations. The case of Benzene-molecule complex was studied with a number of small molecules. We found that the binding energy for the set of complexes depend significantly on XC approximation employed although its trend appears rather consistent. Analysis of the reduced density gradient revealed that the binding energy trend among different XC approximation is hi
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Dissertations / Theses on the topic "Reduced reptation"

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Fiore, Kateřina. "Kinetika krystalizace v semikrystalických nanokompozitech." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2010. http://www.nusl.cz/ntk/nusl-233315.

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Růst krystalů zásadně ovlivňuje morfologii a tím také mechanické vlastnosti semikrystalických polymerů. Tato PhD práce přináší alternativní pohled na popis kinetiky krystalizace v polyolefinech plněných slabě interagujícími částicemi. V nanokompozitních materiálech vysoký specifický povrch plniva i při nízkých plněních zásadně ovlivňuje dynamiku řetězců. V blízkosti povrchu plniva začíná hrát významnou roli zpomalená reptace způsobená jak vzájemnými interakcemi plnivo-polymer tak prostorovým omezením mezi nanočásticemi. Růst krystalů byl zkoumán pomocí polarizovaného optického mikroskopu vybav
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