Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Roger D. Hester"'
Autor:
Roger D. Hester, Scott Miller
Publikováno v:
Chemical Engineering Communications. 194:85-102
The first stage of a two-step concentrated sulfuric acid process that converts softwood sawdust to sugars has been explored. The research focuses on the ability of an in-house custom fabricated corotating twin-screw reactor (TSR) to effectively break
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::656134c3eca7a2f2d9f576f778211508
https://doi.org/10.1080/00986440600586545
https://doi.org/10.1080/00986440600586545
Autor:
Scott Miller, Roger D. Hester
Publikováno v:
Chemical Engineering Communications. 194:103-116
A study of high-temperature, concentrated-acid hydrolysis kinetics was undertaken for pretreated pine utilizing a corotating twin-screw extruder reactor. Five different acid concentrations were prepared ranging from 5 to 30 wt.% acid. These solutions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b30ee53ebcb1b560e80e6f307c6aee02
https://doi.org/10.1080/00986440600715854
https://doi.org/10.1080/00986440600715854
Autor:
Roger D. Hester, T.S. Rushing
Publikováno v:
Polymer. 45:6587-6594
Elements of Odijk-Skolnick-Fixman and Yamakawa-Fujii polymer solution theories have been modified to create a new model that correlates flexible coil polyion intrinsic viscosity behavior with solvent and polymer properties. A new dimensionless viscos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f8c8b23a0c93b6067cb1118fdeb9c57
https://doi.org/10.1016/j.polymer.2004.07.029
https://doi.org/10.1016/j.polymer.2004.07.029
Autor:
Charles L. McCormick, and Andrew B. Lowe, Roger D. Hester, David B. Thomas, Anthony J. Convertine
Publikováno v:
Macromolecules. 37:1735-1741
The controlled radical polymerization (CRP) technique reversible addition−fragmentation chain transfer (RAFT) has potential for preparing functional (co)polymers directly in an aqueous environment. Hydrolysis and aminolysis can eliminate the active
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9682841f0ce2ab9e1b5bc88afac8dc17
https://doi.org/10.1021/ma035572t
https://doi.org/10.1021/ma035572t
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 42:3252-3270
The solution properties of low-charge-density ampholytic terpolymers of acrylamide, sodium 3-acrylamido-3-methylbutanoate, and (3-acrylamidopropyl)trimethylammonium chloride were studied as functions of the solution pH, ionic strength, and polymer co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1af49e20519183a2ef839cffd4660ce
https://doi.org/10.1002/pola.20174
https://doi.org/10.1002/pola.20174
Autor:
J. Kasey Bridges, Charles L. McCormick, Roger D. Hester, Matthew G. Kellum, Michael J. Fevola
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 42:3236-3251
Low-charge-density ampholytic terpolymers composed of acrylamide, sodium 3-acrylamido-3-methylbutanoate (NaAMB), and (3-acrylamidopropyl)trimethylammonium chloride were prepared via free-radical polymerization in 0.5 M NaCl to yield terpolymers with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5984dcebfd812680b1eeb6c8d721cd98
https://doi.org/10.1002/pola.20173
https://doi.org/10.1002/pola.20173
Autor:
Michael J. Fevola, Roger D. Hester, Matthew G. Kellum, Charles L. McCormick, J. Kasey Bridges
Publikováno v:
Journal of Applied Polymer Science. 94:24-39
A comparative study of pH-responsive polyzwitterions (PZs) with polyampholyte or polybetaine architectures was conducted with well-defined model polymer systems. Low-charge-density PZs, including ampholytic terpolymers composed of acrylamide (AM), so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::670414aaaa0488fae3de9e930fe17cbc
https://doi.org/10.1002/app.20700
https://doi.org/10.1002/app.20700
Autor:
T.S. Rushing, Roger D. Hester
Publikováno v:
Journal of Applied Polymer Science. 89:2831-2835
Experimental solution intrinsic viscosity responses to temperature and polymer molecular weight variations were used to test the modeling capability of a simplified intrinsic viscosity equation. The multiple linear equation contains three parameters
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c95034ce53107b59becc74fc6cb12987
https://doi.org/10.1002/app.12455
https://doi.org/10.1002/app.12455
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 41:560-568
We discuss the synthesis and characterization of polyacrylamide (PAM) homopolymers with carefully controlled molecular weights (MWs). PAM was synthesized via free-radical solution polymerization under conditions that yield highly linear polymer with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc5cbbfc545c438bea3623e188ba9422
https://doi.org/10.1002/pola.10594
https://doi.org/10.1002/pola.10594
Autor:
T.S. Rushing, Roger D. Hester
Publikováno v:
Review of Scientific Instruments. 74:176-181
A low-shear capillary viscometer has been designed, constructed, and used to measure polymer solution intrinsic viscosities over temperatures ranging from 10 to 75 °C. The instrument is capable of detecting the small shear stress forces produced whe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1455b7784dd1df1abf5b49e473c08c89
https://doi.org/10.1063/1.1529302
https://doi.org/10.1063/1.1529302