Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Grigori A. Medvedev"'
Publikováno v:
Macromolecules. 55:6351-6363
Autor:
Grigori A. Medvedev
Publikováno v:
Physical Review E. 107
Publikováno v:
Polymer Engineering & Science. 62:537-552
Autor:
Jeffrey M. Switzer, Mahdi M. Abu-Omar, Joshua Speer, James M. Caruthers, Grigori A. Medvedev, Chan Y. Park
Publikováno v:
Macromolecules. 54:4101-4111
Ethylene and 1-hexene were copolymerized by a hafnium salan-type catalyst activated by B(C₆F₅)₃ producing copolymers over a wide range of 1-hexene incorporation. GPC analysis of the resulting copolymers showed a low dispersity index, suggesting
Publikováno v:
Polymer. 268:125707
Enhancement of Mechano-Sensitivity for Spiropyran-Linked Poly(dimethylsiloxane) via Solvent Swelling
Autor:
Jaewoo Kim, You-Yeon Won, James M. Caruthers, Grigori A. Medvedev, Dong Woo Kim, Jun Young Jo
Publikováno v:
Macromolecules. 53:7954-7961
Spiropyran (SP) is a mechanophore that undergoes changes in chemical structure and thus in optical character when subjected to a force. Incorporation of SP into polymer chains enables optical detec...
Autor:
Grigori A. Medvedev, Daniel A. Wilcox, Bryan W. Boudouris, Yelin Ni, James M. Caruthers, Hosup Song
Publikováno v:
Macromolecules. 53:1867-1880
In this communication, we propose a different approach for analyzing linear viscoelastic relaxation data that is more faithful to the underlying physics and naturally accommodates the thermorheological complexity that is observed in glass-forming pol
Publikováno v:
Macromolecules. 52:1424-1439
The super-Arrhenian temperature dependence of the mobility is a key signature of glass-forming polymers, where the mobility can decrease by 10 orders of magnitude or more as the temperature is decreased toward Tg. A fundamental description of the sup
Autor:
W. Nicholas Delgass, D. Keith Steelman, Paul D. Pletcher, Jeffrey M. Switzer, Grigori A. Medvedev, Mahdi M. Abu-Omar, James M. Caruthers, Jungsuk Kim
Publikováno v:
ACS Catalysis. 8:10407-10418
The chemical kinetics for a series of three zirconium amine bis(phenolate) catalysts for poly 1-hexene polymerization have been examined as a function of temperature. Detailed modeling of the experimental data has yielded the activation parameters fo
Autor:
Andrew Z. Preston, Mahdi M. Abu-Omar, Silei Xiong, D. Keith Steelman, W. Nicholas Delgass, Thilina Gunasekara, Grigori A. Medvedev, Jungsuk Kim, James M. Caruthers
Publikováno v:
Macromolecules. 50:9151-9161
A zirconium amine bis(phenolate) catalyst that is capable of simultaneously producing both oligomers and polymers of 1-hexene was investigated. It was found that the polymer produced has more branching than the commonly encountered poly(1-hexene), su