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Author: li piin sung

Displaying records 11 to 20 of 73 records.
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11. Linking Degree of Filler Dispersion to Photodegradation Rate in a NanoTiO2-Latex Coating: An Accelerated Weathering Study
Published: 9/4/2011
Authors: Li Piin Sung, Yongyan Pang, Stephanie S Watson
Abstract: The objective of this study is to investigate the influence of the filler dispersion of nano-TiO2 in polymeric coatings on the surface morphology evolution of the coatings under UV exposure. Two types of nano-TiO2 with different surface treatments we ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908287

12. Extent and Quality of Interface in Cellulose-PE Nanocomposites
Published: 8/28/2011
Authors: Mauro Zammarano, Paul Hutsell Maupin, Li Piin Sung, Jeffrey W Gilman, Edward D. McCarthy, Yeon S. Kim, Douglas M. Fox
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908081

13. Revealing the Interphase in Polymer Nanocomposites
Published: 3/16/2011
Authors: Mauro Zammarano, Paul Hutsell Maupin, Li Piin Sung, Jeffrey W Gilman, Douglas Matthew Fox
Abstract: Morphological characterization of polymer nanocomposites is a fundamental challenge that is complicated by multiple length scales. Here, we report a technique for high-throughput monitoring of interphase and dispersion in polymer nanocomposites based ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906284

14. Effects of Temperature and Humidity on the Photodegradation of TiO2-Filled Acrylic Urethane Films
Published: 10/28/2009
Authors: Stephanie S Watson, Tarek Marray, Yongyan Pang, Li Piin Sung
Abstract: Metal oxide fillers, such as titanium dioxide (TiO2) are commonly used in building and construction applications and are added to increase the opacity and/or to improve the mechanics of a coating. However, their photoreactivity can contribute to deg ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904151

15. Mapping Heterogeneity in NanoTiO2/Polymer Coatings Using Confocal Microscopy and Depth Sensing Indentation
Published: 10/14/2009
Author: Li Piin Sung
Abstract: The purpose of this study is to develop relevant metrology to measure the appropriate structure-property relationship at a proper length scale to understand the interplay between nanoparticle and polymeric matrix. In this paper, we present the prelim ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904088

16. Effect of Nano-Silica Fillers on Surface Morphology and Mechanical Properties of Polymer-Silica Composites
Published: 8/20/2009
Authors: Li Piin Sung, Dongmei Zhe, Aaron M Forster, Peter Krommenhoek, Nancy J Lin, Sheng Lin-Gibson
Abstract: Investigation on the effect of nano-silica on the effect of nano-silica on the surface morphology and mechanical properties has been carried out on two-dimensional (2D) gradient polymer-silica composite samples varied in chemical composition (e.g., f ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902248

17. Quantification of cell response to polymeric composites using a two-dimensional gradient platform
Published: 8/6/2009
Authors: Nancy J Lin, Haiqing Hu, Li Piin Sung, Sheng Lin-Gibson
Abstract: A simple and straightforward screening process to assess the toxicity and corresponding cell response of dental composites would be useful prior to extensive in vitro or in vivo characterization. To this end, gradient composite samples were prepared ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854040

18. Long-Term Performance of Nano-Filled Polymeric Materials: Effect of ZnO Nanoparticles on Photodegradation of a Waterborne Polyurethane Coating
Published: 7/8/2009
Authors: Xiaohong Gu, Dongmei Zhe, Minhua Zhao, Guodong Chen, Nhieu Ly, Paul E Stutzman, Li Piin Sung, Tinh Nguyen, Joannie W Chin
Abstract: Polymers are widely used as exterior coatings in buildings, bridges, aircrafts and automobiles for both protection and aesthetic purposes. However, the service life of the applied coatings is limited due to the photodegradation of polymers induced by ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902293

19. Characterizing the Dynamic Behavior of Nano-TiO2 Agglomerates in Suspensions by Photocorrelation Spectroscopy
Published: 4/22/2009
Authors: I-Hsiang Tseng, Stephanie S Watson, Li Piin Sung
Abstract: Metal oxide nanoparticles are small but easily form agglomerates in suspension, depending on the strength of particle-particle and particle-media interactions. To understand the agglomeration behavior of nanoparticles in media and relate to it to pro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902458

20. Combinatorial characterization of photopolymerizable composites: Effect of filler type and content on properties
Published: 3/22/2009
Authors: Li Piin Sung, Aaron M Forster, Haiqing Hu, Nancy J Lin, Sheng Lin-Gibson
Abstract: Multi-component formulations coupled with complex processing conditions govern the final properties of photopolymerizable dental composites. In this study, a single test substrate was fabricated to support multiple formulations with a gradient in deg ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900240



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