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You searched on: Topic Area: Polymers

Displaying records 21 to 30 of 420 records.
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21. Confinement-Driven Increase in Ionomer Thin-Film Modulus
Topic: Polymers
Published: 4/28/2014
Authors: Kirt A. Page, Ahmet Kusoglu, Christopher M Stafford, Sangcheol Kim, Regis J Kline, Adam Weber
Abstract: Ion-conductive polymers, or ionomers, are critical materials for a wide range of electrochemical technologies. For optimizing the complex, heterogeneous structures in which they occur, there is a need to elucidate the governing structure/func ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914704

22. Measuring Organelle Shape in 3D in Stem Cells Cultured on Nanofiber Scaffolds
Topic: Polymers
Published: 4/19/2014
Authors: Carl George Simon Jr., Peter Bajcsy, Wojtek J Tutak, Jyotsnendu J. Giri
Abstract: Previous work has demonstrated that culture of osteoprogenitor cells on nanofiber scaffolds can potentiate osteogenic differentiation [1-4]. Culture of cells in nanofiber scaffolds causes changes to cell morphology, suggesting that morphological ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914995

23. Measuring Stem Cell Dimensionality in Tissue Scaffolds
Topic: Polymers
Published: 4/1/2014
Authors: Carl George Simon Jr., Sapun Parekh, Christopher K. Tison, Girish Kumar, Tanya M. Farooque, Charles H Camp
Abstract: Many 3D scaffold systems have evolved for tissue engineering, drug screening and in vitro tissue models. However, it is not clear which scaffolds provide a 3D cell niche and there is no clear way to measure cell niche dimensionality. Advances in 3D ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913148

24. Single PPTA fiber tensile test under high strain rate
Topic: Polymers
Published: 4/1/2014
Authors: Jae Hyun Kim, Nathanael A Heckert, Steven P Mates, Jonathan Edward Seppala, Chelsea Simone Davis, Walter G McDonough, Kirk D Rice, Gale Antrus Holmes
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915457

25. Saponins: A sustainable surfactant. From its microwave-assisted extraction to the synthesis of monodisperse latices
Topic: Polymers
Published: 1/21/2014
Authors: Charlene Schnitt, Bruno Grassl, Julien C. Gigault, Vincent A Hackley, Gaetane Lespes, Jacques Desbrieres, Virginie Pellerin, Stephanie Reynaud
Abstract: Synthetic surfactants are widely used in emulsion polymerization, but it is increasingly desirable to replace them with naturally derived molecules with a reduced environmental burden. This study demonstrates the use of saponins as sustainable an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914452

26. Measuring order in regioregular poly(3-hexylthiophene) with solid-state 13C CPMAS NMR
Topic: Polymers
Published: 1/10/2014
Authors: Ryan C Nieuwendaal, Chad R Snyder, Dean M DeLongchamp
Abstract: We report on details of molecular packing in high molar mass poly(3-hexylthiophene) (P3HT) by solid-state 13C {1H} cross-polarization magic angle spinning (CPMAS) NMR measurements. The degree of polymer order was estimated for two films of varied dry ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914449

27. Tailoring the Permselectivity of Water Desalination Membranes via Nanoparticle Assembly
Topic: Polymers
Published: 1/6/2014
Authors: Edwin P Chan, William Mulhearn, Jung-Hyun Lee, Daeyeon Lee, Christopher M Stafford
Abstract: : Thin film composite membranes can selectively separate mono- and di-valent ions from water via solution-diffusion of each species through a dense but ultrathin, highly crosslinked polymer ,skin‰ layer ‹ water is transported across the membrane fas ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914717

28. Airbrushed Nanofiber Scaffolds Support Bone Marrow Stromal Cell Differentiation
Topic: Polymers
Published: 11/1/2013
Authors: Carl George Simon Jr., Wojtek J Tutak, Sumona Sarkar, Tanya M. Farooque, Jyotsnendu J. Giri, Dongbo Wang, Sheng Lin-Gibson, Joachim Kohn, Durgadas Bolikal
Abstract: Nanofiber scaffolds are effective for tissue engineering since they emulate the fibrous nanostructure of native extracellular matrix (ECM). Although electrospinning has been the most common approach for fabricating nanofiber scaffolds, airbrushi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912293

29. Swelling of Ultrathin Molecular Layer-by-Layer Polyamide Water Desalination Membranes
Topic: Polymers
Published: 9/30/2013
Authors: Edwin P Chan, Allison P Young, Jung-Hyun Lee, Christopher M Stafford
Abstract: The water vapor swelling behavior of ultrathin crosslinked aromatic polyamide films, synthesized via molecular layer-by-layer deposition, is characterized via specular X-ray reflectivity. The results show that these films expand only along the thickn ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913915

30. Total free energy governs cell morphology ‹ A possible solution to obtain intrinsic cell modulus
Topic: Polymers
Published: 9/26/2013
Authors: Martin Y Chiang, Yanzi Yangben , Nancy J Lin, Li Yang
Abstract: Cells adjust their morphology in response to physical and chemical interactions with their environment. In this report, we deem that the fundamental nature of free energies associated with cell/substrate interactions regulates adherent cell morpholog ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909671



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