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You searched on: Topic Area: Polymers Sorted by: date

Displaying records 31 to 40 of 407 records.
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31. 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 ...

32. 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 ...

33. 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 ...

34. 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 ...

35. Capturing nanoscale in network gels by microemulsion polymerization
Topic: Polymers
Published: 12/3/2012
Authors: Kirt A. 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 ...

36. 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 ...

37. 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 Seok 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. ...

38. Capillary Wave Dynamics of Thin Polymer films over Submerged Nanostructures
Topic: Polymers
Published: 11/16/2012
Authors: Christopher Soles, Hyun Wook 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 ...

39. 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 ...

40. Effect of offset values of solid freeform fabricated PCL/ß-TCP scaffolds on mechanical properties and cellular activities in bone tissue regeneration
Topic: Polymers
Published: 11/1/2012
Authors: Carl George Simon Jr., GeunHyung Kim, MyungGu Yo
Abstract: Microstructures of biomedical scaffolds can greatly affect cellular activities in tissue regeneration. In particular, scaffolds used in bone tissue regeneration should have several microstructural characteristics, including high porosity, appropriate ...

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