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Displaying 401 - 425 of 3711

Insights into the Water Transport Mechanism in Polymeric Membranes from Neutron Scattering

February 5, 2020
Author(s)
Edwin P. Chan, Bradley R. Frieberg, Jacob Daniel Tarver, Madhusudan Tyagi, WenXu Zhnag, Bryan Coughlin, Christopher M. Stafford, Abhishek Roy, Steve Rosenberg, Christopher L. Soles
Polymeric membranes are ubiquitous in a number of transport ap- plications including gas separation, water desalination, solid state batteries and fuel cells. The permeability and selectivity of these membranes are intimately linked to the structure and

Crucial role of fluorine in fully alkylated ladder type carbazole based nonfullerene acceptors for efficient organic solar cells

January 30, 2020
Author(s)
Eliot Gann, Christopher McNeill, He Qiao, Munazza Shahid, Xuchem Jiao, Flurin D. Eisner, Tingmang Wu, Zhuping Fei, Thomas D. Anthopoulos, Martin Heeney
Two fused ladder type nonfullerene acceptors, DTCCIC and DTCCIC-4F, based on an electron-donating core alkylated dithienocyclopentacarbazole flanked by electron-withdrawing non-fluorinated or fluorinated 1,1- dicyanomethylene-3-indanone (IC or IC-4F), are

Graphene oxide/waterborne polyurethane nanocoatings: Effects of graphene oxide content on performance properties

January 15, 2020
Author(s)
David G. Goodwin, Coralie Bernard, Xiaohong Gu, Mat Celina, Marc R. Nyden, Deborah S. Jacobs, Li Piin Sung, Tinh Nguyen
Graphene oxide (GO) is a good nanofiller candidate for waterborne coatings because of its outstanding physical and mechanical properties, good dispersibility in water, and low cost. Here, we report on the performance of a one-part, water-borne polyurethane

Reduced Holey Graphene Oxide Membranes for Desalination with Improved Water Permeance

December 13, 2019
Author(s)
Xiaoyi Chen, Zhihao Feng, Janavi Gohil, Christopher Stafford, Ning Dai, Liang Huang, Haiqing Lin
Reduced-graphene oxide (r-GO) membranes with narrow channels exhibit salt rejections comparable to conventional nanofiltration (NF) membranes. However, their water permeances are much lower because of the high tortuosity for water permeation. Herein we

Evaluating performance, degradation, and release behavior of a nanoform pigmented coating after natural and accelerated weathering

December 6, 2019
Author(s)
Ronald S. Lankone, David G. Goodwin, Li Piin Sung, Emmanuel Ruggiero, Klaus Vilsmeier, Philipp Mueller, Sorin Pulbere, Katie Challis, Yuqiang Bi, Paul Westerhoff, James Ranville, David H. Fairbrother, Wendel Wohlleben
Pigments with nanoscale dimensions are added to exterior coatings to achieve desirable color and gloss properties. The present study compared the performance, degradation, and release behavior of an acrylic coating that was pigmented by a nanoform of Cu

Unexpectedly Strong Size-Sieving Ability in Carbonized Polybenzimidazole for Membrane H2/CO2 Separation

November 21, 2019
Author(s)
Maryam Omidvar, Hien Nguyen, Liang Huang, Cara Doherty, Anita Hill, Christopher Stafford, Xianshe Feng, Mark Swihart, Haiqing Lin
Polymers with high permeability and strong size-sieving ability are needed for H2/CO2 separation at temperatures ranging from 100 °C to 300 °C to enable an energy-efficient pre- combustion CO2 capture process. However, such polymers usually suffer from a
Displaying 401 - 425 of 3711