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You searched on: Topic Area: Polymers

Displaying records 11 to 20 of 405 records.
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11. 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

12. 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

13. 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

14. 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

15. 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

16. 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

17. Feeling Small: Exploring the tactile perception limits
Topic: Polymers
Published: 9/12/2013
Authors: Lisa Skedung, Martin Arvidsson, Jun Y. Chung, Christopher M Stafford, Birgitta Berglund, Mark W. Rutland
Abstract: The human finger is exquisitely sensitive in distinguishing different materials, but the question remains as to what length scales are capable of being discriminated in active touch? We combine psychophysical approaches with materials science to man ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911683

18. Determination of Interfacial Shear Strength in Epoxy/Glass Composites by Multi-Fiber Fragmentation Test (MFFT)
Topic: Polymers
Published: 8/2/2013
Authors: Edward D. McCarthy, Jae Hyun Kim, Nathanael A Heckert, Stefan D Leigh, Gale Antrus Holmes, Jeffrey W Gilman
Abstract: The mechanical strength of a structural composite is strongly affected by the strength and toughness of the interface achieved between the continuous matrix phase, or resin, and the re-inforcing phase, normally consisting of multiple arrays of carbon ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913848

19. STRAIN RATE EFFECT ON SINGLE PPTA FIBER TENSILE BEHAVIOURS
Topic: Polymers
Published: 8/2/2013
Authors: Jae Hyun Kim, Nathanael A Heckert, Stefan D Leigh, Walter G McDonough, Kirk D Rice, Gale Antrus Holmes
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912910

20. Non-rigid and tough calcium phosphate cement scaffold seeded with umbilical cord stem cell for bone repair
Topic: Polymers
Published: 8/1/2013
Authors: Carl George Simon Jr., Hockin H. K. Xu, Michael D Weir, WahWah Thein-Han
Abstract: Human umbilical cord mesenchymal stem cells (hUCMSCs) are a promising alternative to bone marrow MSCs, which require invasive procedures to harvest. The objectives of this study were to develop a novel non-rigid and tough calcium phosphate cement (CP ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907572



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