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Topic Area: Polymers

Displaying records 21 to 30 of 547 records.
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21. Gradient Nanofiber Scaffold Libraries for Screening Cell Response to Poly(e-caprolactone)-Calcium Phosphate Composites
Topic: Polymers
Published: 3/1/2013
Authors: Carl George Simon Jr, Limin Sun, Laurence Chung Lung Chow, William Miles, Christopher K. Tison, Kaushik Chatterjee, Marian F Young, Vinoy Thomas, Murugan Ramalingam
Abstract: A 2-spinnerette approach has been developed for fabricating nanofiber scaffold gradients for use as 1) scaffold libraries for screening the effect of nanofiber properties on cell response and 2) templates for generating graded tissue interfaces. Alt ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906818

22. Spontaneous wrinkling in azlactone-based functional polymer thin films in 2d and 3d geometries for guided nanopatterning
Topic: Polymers
Published: 2/4/2013
Authors: Muruganathan Ramanathan, Bradley S Lokitz, Jamie M Messman, Christopher M Stafford, S. Michael Kilbey
Abstract: We report a simple, one step process for developing wrinkling patterns in azlactone-based polymer thin films and brushes in 2D and 3D surfaces. The polymer used in this work wrinkles spontaneously upon deposition and solidification on a substrate wi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913291

23. Correlating Chlorine-Induced Changes in Mechanical Properties to Performance in Polyamide-Based Thin Film Composite Membranes
Topic: Polymers
Published: 1/26/2013
Authors: Junghyun Lee, Jun Y. Chung, Edwin P Chan, Christopher M Stafford
Abstract: Understanding the degradation of polyamide-based (PA) thin-film composite membranes by chlorine is imperative to develop chlorine-resistant membranes, an important characteristic that is needed to provide the desired long-term performance of membrane ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912011

24. Design and Implementation of Two-Dimensional Polymer Adsorption Models: Evaluating the Stability of Candida Antartica Lipase B at Solid-Support Interfaces by QCM-D
Topic: Polymers
Published: 1/4/2013
Authors: Sara V Orski, Santanu Kundu, Richard Gross, Kathryn L Beers
Abstract: A two-dimensional model of a solid-supported enzyme catalyst bead is fabricated on a quartz crystal microbalance sensor to measure in situ stability and mechanical properties of Candida Antartica Lipase B (CAL B) layers under varied conditions relati ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912259

25. Swelling of ultrathin crosslinked polyamide water desalination membranes
Topic: Polymers
Published: 12/27/2012
Authors: Edwin P Chan, Allison P Young, Jung-Hyun Lee, Jun-Young Chung, Christopher M Stafford
Abstract: We study the water swelling behavior of semi-aromatic crosslinked polyamide ultrathin films in order to characterize the materials properties of the polymer network. Specifically, we utilize X-ray reflectivity and quartz crystal microbalance to m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912297

26. Capturing nanoscale in network gels by microemulsion polymerization
Topic: Polymers
Published: 12/3/2012
Authors: Kirt Anthony Page, John Texter, Dustin England
Abstract: Difficulties in capturing nanoscale structure by polymerizing microemulsions have persisted with the use of thermal initiation. Bicontinuous microemulsion polymerization with reactive surfactant monomer and cross-linker was done with only a 20% i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912333

27. An automated spin-assisted approach for molecular layer-by-layer assembly of crosslinked polymer thin films
Topic: Polymers
Published: 11/28/2012
Authors: Edwin P Chan, Jung-Hyun Lee, Jun-Young Chung, Christopher M Stafford
Abstract: We present the design of an automated spin-coater that facilitates fabrication of polymer films based on molecular layer-by-layer (mLbL) assembly. Specifically, we demonstrate the synthesis of ultrathin crosslinked fully-aromatic polyamide films ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912301

28. Formation of Extended Ionomeric Network by Bulk Polymerization of L,D-lactide with Layered Double Hydroxide
Topic: Polymers
Published: 11/22/2012
Authors: Edward D. McCarthy, Mauro Zammarano, Douglas M. Fox, Ryan C Nieuwendaal, Yeon S. Kim, P H Maupin, Paul C Trulove, Jeffrey W Gilman
Abstract: We report the formation of an ionomeric network in a poly(L,D-lactide) hybrid nanocomposite, (PLDLA-HYB) during in-situ melt polymerization of L,D lactide in the presence of magnesium/aluminium layered-double-hydroxide (LDH) without added catalyst. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910615

29. Capillary Wave Dynamics of Thin Polymer films over Submerged Nanostructures
Topic: Polymers
Published: 11/16/2012
Authors: Christopher L Soles, Hyun W. Ro, K. J. Alvine, Oleg Shpyrko, Yenling Dai, Alec Sandy, Suresh Narayanan
Abstract: The surface dynamics of thin molten polystyrene films supported by nanoscale periodic silicon line-space gratings were investigated with X-ray photon correlation spectroscopy. Surface dynamics over these nanostructures exhibit high directional aniso ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910869

30. Imaging the Molecular Structure of Polyethylene Blends with Broadband Coherent Raman Microscopy
Topic: Polymers
Published: 11/8/2012
Authors: Young Jong Lee, Chad R Snyder, Aaron M Forster, Marcus T Cicerone, Wen-Li Wu
Abstract: Polyethylene (PE) is a ubiquitous material in our daily life appearing as milk bottles, toys and diapers. A lesser-known but increasingly important use of PE is as underground gas and water pipes, because of its ease of installation and lack of corr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911831



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