@article{sandru_sandru_ingram_deng_stenstad_deng_spontak_2022, title={An integrated materials approach to ultrapermeable and ultraselective CO2 polymer membranes}, volume={376}, ISSN={["1095-9203"]}, DOI={10.1126/science.abj9351}, abstractNote={ Advances in membrane technologies that combine greatly improved carbon dioxide (CO 2 ) separation efficacy with low costs, facile fabrication, feasible upscaling, and mechanical robustness are needed to help mitigate global climate change. We introduce a hybrid-integrated membrane strategy wherein a high-permeability thin film is chemically functionalized with a patchy CO 2 -philic grafted chain surface layer. A high-solubility mechanism enriches the concentration of CO 2 in the surface layer hydrated by water vapor naturally present in target gas streams, followed by fast CO 2 transport through a highly permeable (but low-selectivity) polymer substrate. Analytical methods confirm the existence of an amine surface layer. Integrated multilayer membranes prepared in this way are not diffusion limited and retain much of their high CO 2 permeability, and their CO 2 selectivity is concurrently increased in some cases by more than ~150-fold. }, number={6588}, journal={SCIENCE}, author={Sandru, Marius and Sandru, Eugenia M. and Ingram, Wade F. and Deng, Jing and Stenstad, Per M. and Deng, Liyuan and Spontak, Richard J.}, year={2022}, month={Apr}, pages={90-+} } @article{wozniak-braszak_knitter_markiewicz_ingram_spontak_2019, title={Effect of Composition on the Molecular Dynamics of Biodegradable Isotactic Polypropylene/Thermoplastic Starch Blends}, volume={7}, ISSN={["2168-0485"]}, DOI={10.1021/acssuschemeng.9b02774}, abstractNote={Polyolefins such as polypropylene are used in an immensely broad range of commodity products and account for the largest volume of synthetic polymers generated worldwide. For this reason, this family of thermoplastics contributes significantly to solid waste both on land and in the ocean. One viable approach to mitigate this growing problem and simultaneously reduce the cost of and dependence on petroleum-based polymers relies on blends wherein an added biopolymer can promote natural biodegradation. Due to their chemical dissimilarity, however, nonpolar polyolefins and polar biopolymers tend to phase-separate, in which case a fundamental, molecular-level understanding of the role of polymer/polymer interfaces on chain mobility in blends differing in composition is needed. In the present study, the molecular dynamics of blends composed of isotactic polypropylene (iPP) and glycerol-plasticized thermoplastic starch (TPS) are investigated by solid-state proton nuclear magnetic resonance and dielectric relaxat...}, number={19}, journal={ACS SUSTAINABLE CHEMISTRY & ENGINEERING}, author={Wozniak-Braszak, Aneta and Knitter, Monika and Markiewicz, Ewa and Ingram, Wade F. and Spontak, Richard J.}, year={2019}, month={Oct}, pages={16050–16059} } @article{kim_shahariar_ingram_zhou_jur_2019, title={Inkjet Process for Conductive Patterning on Textiles: Maintaining Inherent Stretchability and Breathability in Knit Structures}, volume={29}, ISSN={["1616-3028"]}, url={http://dx.doi.org/10.1002/adfm.201807573}, DOI={10.1002/adfm.201807573}, abstractNote={Abstract}, number={7}, journal={ADVANCED FUNCTIONAL MATERIALS}, publisher={Wiley}, author={Kim, Inhwan and Shahariar, Hasan and Ingram, Wade F. and Zhou, Ying and Jur, Jesse S.}, year={2019}, month={Feb} } @article{ingram_jur_2019, title={Properties and Applications of Vapor Infiltration into Polymeric Substrates}, volume={71}, ISSN={["1543-1851"]}, DOI={10.1007/s11837-018-3157-9}, number={1}, journal={JOM}, author={Ingram, Wade F. and Jur, Jesse S.}, year={2019}, month={Jan}, pages={238–245} } @article{aksu_ingram_bradford_jur_2018, title={Laser-etch patterning of metal oxide coated carbon nanotube 3D architectures}, volume={29}, ISSN={["1361-6528"]}, DOI={10.1088/1361-6528/aac79d}, abstractNote={This paper describes a way to fabricate novel hybrid low density nanostructures containing both carbon nanotubes (CNTs) and ceramic nanotubes. Using atomic layer deposition, a thin film of aluminum oxide was conformally deposited on aligned multiwall CNT foams in which the CNTs make porous, three-dimensional interconnected networks. A CO2 laser was used to etch pure alumina nanotube structures by burning out the underlying CNT substrate in discrete locations via the printed laser pattern. Structural and morphological transitions during the calcination process of aluminum oxide coated CNTs were investigated through in situ transmission electron microscopy and high-resolution scanning electron microscopy. Laser parameters were optimized to etch the CNT away (i.e. etching speed, power and focal length) while minimizing damage to the alumina nanotubes due to overheating. This study opens a new route for fabricating very low density three dimensionally patterned materials with areas of dissimilar materials and properties. To demonstrate the attributes of these structures, the etched areas were used toward anisotropic microfluidic liquid flow. The demonstration used the full thickness of the material to make complex pathways for the liquid flow in the structure. Through tuning of processing conditions, the alumina nanotube (etched) regions became hydrophilic while the bulk material remained hydrophobic and electrically conductive.}, number={33}, journal={NANOTECHNOLOGY}, author={Aksu, Cemile and Ingram, Wade and Bradford, Philip D. and Jur, Jesse S.}, year={2018}, month={Aug} }