Zobrazeno 1 - 10
of 447
pro vyhledávání: '"James E. McGrath"'
Publikováno v:
Journal of Membrane Science. 546:234-245
This paper reports water and salt transport properties of sulfonated polysulfone desalination membranes prepared by solvent-free, melt extrusion. The 20 mol% disulfonated poly(arylene ether sulfone) (BPS-20K) membranes were prepared by melt processin
Autor:
Shreya Roy Choudhury, James E. McGrath, John J. Lesko, Benny D. Freeman, Judy S. Riffle, Eui Soung Jang, Amin Daryaei, Dana Kazerooni
Publikováno v:
Polymer. 132:286-293
Controlled molecular weight poly(arylene ether sulfone) oligomers with aromatic amine end groups and systematically varied degrees of disulfonation were synthesized by direct polymerization of disulfonated and non-sulfonated 4,4′-dichlorodiphenylsu
Publikováno v:
Polymer. 226:123810
A multiblock copolymer with increased charge density in the hydrophilic phase was synthesized by utilizing a trisulfonated poly(arylene ether sulfone) backbone (SHQS100). To achieve a balance of membrane properties a partially fluorinated poly(arylen
Autor:
Yu Chen, Cortney K Mittelsteadt, Jarrett R. Rowlett, Judy S. Riffle, Visarn Lilavivat, Hui Xu, Sirivatch Shimpalee, Andrew T. Shaver, Amin Daryaei, James E. McGrath
Publikováno v:
Polymer. 122:296-302
This manuscript represents a second part to the investigation of multiblock disulfonated poly(arylene ether sulfone) and poly(arylene ether nitrile) copolymers. In Part 1 it was shown that the multiblock copolymers had high ion exchange capacities (I
Autor:
Britannia Vondrasek, Cortney K Mittelsteadt, Jason Willey, Judy S. Riffle, Matthew R. Burtner, John J. Lesko, Shreya Roy Choudhury, Gregory C. Miller, Amin Daryaei, Dana Kazerooni, James E. McGrath
Publikováno v:
ACS Applied Materials & Interfaces. 9:20067-20075
Two series of high molecular weight disulfonated poly(arylene ether sulfone) random copolymers were synthesized as proton exchange membranes for high-temperature water electrolyzers. These copolymers differ based on the position of the ether bonds on
Autor:
Jaesung Park, Ozma Lane, James E. McGrath, Benny D. Freeman, Sue J. Mecham, Ali Nebipasagil, Judy S. Riffle, Benjamin J. Sundell
Publikováno v:
Polymer. 118:256-267
Poly(arylene ether sulfone) and poly(ethylene oxide) (PEO)-based segmented polyurethanes were synthesized as potential gas separation membrane materials. Poly(arylene ether sulfone) oligomers with controlled molecular weights (15,000 and 20,000 g/mol
Autor:
Britannia Vondrasek, John J. Lesko, Wenrui Zhang, James E. McGrath, Donald Savacool, Gregory C. Miller, Benny D. Freeman, Joshua D. Moon, Gurtej S. Narang, J. S. Riffle, Andrew T. Shaver
Publikováno v:
Polymer. 114:135-143
Poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) is utilized for gas separation membranes. It has a relatively high free volume with high gas permeabilities but suffers from low selectivities. PPO polymers with Mn's from 2000 to 22,000 g/mole were synthe
Publikováno v:
Journal of Membrane Science. 524:257-265
Disulfonated poly(arylene ether sulfone)s (BPS) random copolymers have been used as membranes for purifying water and generating electricity. These membranes can be prepared by solvent-free, melt extrusion using a proper plasticizer. Poly(ethylene gl
Autor:
James E. McGrath, Anand S. Badami, Hae-Seung Lee, Judy S. Riffle, Abhishek Roy, Michael A. Hickner, T. E. Glass, Mou Paul
Publikováno v:
Polymer. 111:297-306
Disulfonated poly(arylene ether) and polyimide copolymers can phase separate to form nanoscale hydrophilic and hydrophobic domain morphology. Water in these domains has been assigned to three different states, tightly bound, loosely bound and free wa
Autor:
Jaesung Park, James E. McGrath, Donald R Paul, Hee Jeung Oh, Irune Villaluenga, Jacob L. Thelen, Sebnem Inceoglu, Xi Jiang
Publikováno v:
Polymer. 109:106-114
In this study, we discuss a new membrane formation route for preparing sulfonated polysulfone desalination membranes by solvent-free melt processing. Single-layer membranes composed of a 20 mol% disulfonated poly(arylene ether sulfone) random copolym