Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Douglas McFaddin"'
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
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 45:1834-1844
The morphologies of a series of blown films and machine-direction-oriented (MDO) films, all produced from high density polyethylene, were characterized. In the blown film process, the crystalline morphology develops while the melt is under extensiona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07ddc89fb5548c9195e99b6c90ee4719
https://doi.org/10.1002/polb.21209
https://doi.org/10.1002/polb.21209
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 36:2889-2898
Polyethylene produced by a vanadium-based polymerization catalyst contains long-chain branching as determined by NMR and rheology, even though the polymer has very low levels of vinyl unsaturation. A new mechanism is proposed for the formation of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::070b38742ea6ce4065c3c209c58f8b3f
https://doi.org/10.1002/(sici)1099-0518(19981130)36:16<2889::aid-pola7>3.0.co
https://doi.org/10.1002/(sici)1099-0518(19981130)36:16<2889::aid-pola7>3.0.co
Autor:
Douglas McFaddin, Francis M. Mirabella
Publikováno v:
Polymer. 37:931-938
The morphology of multiphase polypropylene copolymers, called impact polypropylenes, was studied by 129 Xe nuclear magnetic resonance (n.m.r.) spectroscopy. The impact polypropylenes studied were composed of polypropylene homopolymer and ethylene—p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0acf94e9c36af51eaaeb4ae007b4f164
https://doi.org/10.1016/0032-3861(96)87275-2
https://doi.org/10.1016/0032-3861(96)87275-2
Autor:
Douglas McFaddin, Mark K. Reinking
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 33:563-570
Several VOCL3-based ethylene polymerization catalyst precursors were prepared on silica and studied by solid-state 51V-NMR. The structure of the vanadium species in these samples, as determined by 51V-NMR, did not have any significant effect on the r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eefbc0a30945e933ec5ff4b8b7b73599
https://doi.org/10.1002/pola.1995.080330323
https://doi.org/10.1002/pola.1995.080330323
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
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics; Jul2007, Vol. 45 Issue 14, p1834-1844, 11p