Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Ramnath Ramachandran"'
Autor:
Nikos Hadjichristidis, Peter A. Beaucage, Gregory Beaucage, Durgesh K. Rai, Ramnath Ramachandran, Kedar Ratkanthwar
Publikováno v:
Physical review. E. 93(5)
Mass fractal scaling, reflected in the mass fractal dimension d_{f}, is independently impacted by topology, reflected in the connectivity dimension c, and by tortuosity, reflected in the minimum dimension d_{min}. The mass fractal dimension is relate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fbe9bcfe70ac8efb5fe5e85284d1774
https://pubmed.ncbi.nlm.nih.gov/27300939
https://pubmed.ncbi.nlm.nih.gov/27300939
Autor:
Ramnath Ramachandran, Alexander I. Norman, Gregory Beaucage, Nikolaos Hadjichristidis, David J. Lohse, Thomas T. Sun, Andy H. Tsou, Durgesh K. Rai
Publikováno v:
Macromolecules. 45:1056-1061
The versatility of a novel scaling approach in quantifying the structure of model well-defined 3-arm star polyethylene molecules is presented. Many commercial polyethylenes have long side branches, and the nature and quantity of these branches varies
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b55bdc50918c293f73c08657720e7d32
https://doi.org/10.1021/ma2021002
https://doi.org/10.1021/ma2021002
Autor:
Douglas McFaddin, Vassilios Galiatsatos, Ramnath Ramachandran, Jean Merrick-Mack, Gregory Beaucage, Francis M. Mirabella
Publikováno v:
Polymer. 52:2661-2666
Commercial polyethylene is typically heterogeneous in molecular weight as well as in molecular topology due to variability in catalyst systems and catalyst activity. Further, processing of polyethylene after polymerization may also result in changes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1b4aee6e2f27535f9fefd1e9f81b77e
https://doi.org/10.1016/j.polymer.2011.04.005
https://doi.org/10.1016/j.polymer.2011.04.005
Autor:
Jean Merrick-Mack, Amit S. Kulkarni, Vassilios Galiatsatos, Gregory Beaucage, Ramnath Ramachandran, Douglas McFaddin
Publikováno v:
Macromolecules. 42:4746-4750
Small-angle neutron scattering (SANS) is employed to investigate the structure and long-chain branch (LCB) content of metallocene-catalyzed polyethylene (PE). A novel scaling approach is applied to...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::582e1c0b09a24efff69b72604b6bc167
https://doi.org/10.1021/ma900199t
https://doi.org/10.1021/ma900199t
Autor:
Douglas McFaddin, Gregory Beaucage, Ramnath Ramachandran, Amit S. Kulkarni, Jean Merrick-Mack, Vassilios Galiatsatos
Publikováno v:
Macromolecules. 41:9802-9806
The effect of short-chain branching (SCB) on the persistence length lp of polyethylene (PE) was studied using small-angle neutron scattering (SANS). In thermodynamically good solvents, lp can be measured directly from the scattering vector qtr at the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::551ec4fe3537953c2f5527e7a8a0be79
https://doi.org/10.1021/ma801775n
https://doi.org/10.1021/ma801775n
Autor:
Gregory Beaucage, Nikos Hadjichristidis, Durgesh K. Rai, Peter A. Beaucage, Ramnath Ramachandran, Kedar Ratkanthwar
Publikováno v:
Physical Review E. 92
Star polymers provide model architectures to understand the dynamic and rheological effects of chain confinement for a range of complex topological structures like branched polymers, colloids, and micelles. It is important to describe the structure o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3259616b33f894c364b8284bc6a64b8
https://doi.org/10.1103/physreve.92.012602
https://doi.org/10.1103/physreve.92.012602
Autor:
Ramnath Ramachandran, Gregory Beaucage, Amit S. Kulkarni, Douglas McFaddin, Jean Merrick-Mack, Vassilios Galiatsatos
Publikováno v:
Macromolecules; Jul2009, Vol. 42 Issue 13, p4746-4750, 5p