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Topic Area: Polymers
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Displaying records 1 to 10 of 546 records.
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1. Quantifying Crystallinity in High Molar Mass Poly(3-hexylthiophene)
Topic: Polymers
Published: 6/3/2014
Authors: Chad R Snyder, Ryan C Nieuwendaal, Dean M DeLongchamp, Christine K Luscombe, Prakash Sista, Shane D Boyd
Abstract: We extend a recent comprehensive study of 3-hexylthiophene oligomers to high molar mass poly(3-hexylthiophene) (P3HT) fractions, such as those used in organic photovoltaic devices. Through a combination of differential scanning calorimetry (DSC) and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915163

2. 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 (Jyotsnendu) 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

3. 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

4. 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

5. Exact solution of the thermodynamics and size parameters of a polymer confined to a lattice of finite size: Large chain limit
Topic: Polymers
Published: 1/21/2014
Authors: Chad R Snyder, Charles Martin Guttman, Edmund Armando DiMarzio
Abstract: We extend the exact solutions of the Di Marzio-Rubin matrix method for the thermodynamic properties, including chain density, of a linear polymer molecule confined to walk on a lattice of finite size. Our extensions enable (a) the use of higher dimen ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913990

6. 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 (Jyotsnendu) 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

7. Analyzing a Co-Polymer Aramid Fiber for Use in Soft Body Armor
Topic: Polymers
Published: 10/25/2013
Authors: Walter G McDonough, Jae Hyun Kim, Nathanael A Heckert, Amanda Lattam Forster, Scott A Wight, Joy P Dunkers, Gale Antrus Holmes
Abstract: Since the well-publicized failure of body armor used by a police officer, it has become imperative that the long-term properties and performance of new fibers being considered for use be understood. The range of interest is from the molecular proper ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914414

8. Morphing Metal-Polymer Janus Particles
Topic: Polymers
Published: 10/25/2013
Authors: Lewis M Cox, Jason Philip Killgore, Zhengwei Li, Zheng Zhang, Donna C. Hurley, Jianliang Xiao, Yifu Ding
Abstract: Shape memory polymers have the unique ability to memorize and recover their permanent shapes after being programmed to hold high strain levels up to a few hundred percent. While studies have traditionally focused on utilizing shape memory effects ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914380

9. Single PPTA fiber tensile properties from quasi-static and high strain rate tests
Topic: Polymers
Published: 10/23/2013
Authors: Jae Hyun Kim, Nathanael A Heckert, Steven P Mates, Walter G McDonough, Kirk D Rice, Gale Antrus Holmes
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914410

10. 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



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