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Author: Xiaohong Gu

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1. A Quantitative Study of Nanoparticle Release from Nanocoatings Exposed to UV Radiation
Published: 4/7/2014
Authors: Li Piin Sung, Deborah L Stanley, Justin M Gorham, Savelas A Rabb, Xiaohong X. Gu, Lee Lijian Yu, Tinh T. Nguyen
Abstract: Nanoparticles are increasingly used in polymer coatings (i.e., nanocoatings) to improve multiple properties of traditional coatings such as mechanical, electrical, gas barrier, and UV resistance. These high performance nanocoatings are often used in ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915497

2. Roadmap for Developing Measurement Science for Predicting the Service Life of Polymers Used in Photovoltaic (PV) Systems
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7971
Published: 2/24/2014
Authors: Xiaohong X. Gu, Joannie W Chin
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912832

3. Role of Particle/Polymer Interphase in Long-Term Performance of Nanofilled Polymeric Coatings
Published: 9/3/2012
Authors: Xiaohong X. Gu, Guodong Chen, Minhua Zhao, Stephanie S Watson, Tinh T. Nguyen, Joannie W Chin, Jonathan W. Martin
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907239

4. Characterization of Surface Accumulation and Release of Nanosilica During Irradiation of Polymer Nanocomposites with Ultraviolet Light
Published: 8/12/2012
Authors: Tinh T. Nguyen, Bastien T. Pellegrin, Coralie Bernard, Savelas A Rabb, Paul E Stutzman, Justin M Gorham, Xiaohong X. Gu, Lee Lijian Yu, Joannie W Chin
Abstract: Nanofillers are increasingly used for enhancing multiple properties of polymeric materials in many applications. However, polymers are susceptible to photodegradation by solar ultraviolet (UV) radiation Therefore, nanofillers in a polymer nanocompos ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909878

5. More Durable or Vulnerable? --- Effect of Nanoparticles on Long-Term Performance of Polymeric Nanocomposites during UV Exposure
Published: 7/2/2012
Authors: Xiaohong X. Gu, Minhua Zhao, Stephanie S Watson, Tinh T. Nguyen, Joannie W Chin, Jonathan W. Martin, Dongmei Zhe, Guodong Chen
Abstract: Polymers are widely used as exterior coatings in buildings, bridges, aircrafts, and automobiles for both protection and aesthetic purposes. However, the sustainability and service life of the applied coatings is limited due to the photodegradation of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909885

6. Fate of nanoparticles during life cycle of polymer nanocomposites
Published: 7/6/2011
Authors: Tinh T. Nguyen, Bastien T. Pellegrin, Coralie Bernard, Xiaohong X. Gu, Justin M Gorham, Paul E Stutzman, Deborah L Stanley, Walter Eric Byrd, John W Hettenhouser, Joannie W Chin
Abstract: Nanoparticles are increasingly used in consumer and structural polymeric products to enhance a variety of properties. Under the influences of environmental factors (e.g., ultraviolet, moisture, temperature) and mechanical actions (e.g., scratching, v ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907488

7. Free Volumes, Glass Transitions, and Cross-links in Zinc Oxide /Waterborne Polyurethane Nanocomposites
Published: 3/23/2011
Authors: Xiaohong X. Gu, Somia Awad, Hongmin Chen, James Lee, E. Abdel-Hady, Y Jean
Abstract: The free volume properties in a system of zinc oxide (ZnO) nanoparticles (20 nm) dispersed in waterborne polyurethane (WBPU) were measured using positron annihilation lifetime spectroscopy. Two glass-transition temperatures (Tg), lower Tg ~ 220 K an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907235

8. Role of Nanoparticles in Life Cycle of Nanocomposites
Published: 6/15/2010
Authors: Xiaohong X. Gu, Guodong Chen, Minhua Zhao, Stephanie S Watson, Paul E Stutzman, Tinh T. Nguyen, Joannie W Chin, Jonathan W. Martin
Abstract: The objective of this study is to investigate the role of ZnO nanoparticles in the life cycle of a waterborne polyurethane (PU) nanocomposite during UV exposure. The effects of loadings and sizes of ZnO nanoparticles on photodegradation of ZnO/PU fil ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905542

9. Degradation and Nanoparticle Release of Nanocomposite Coatings Exposed to UV Radiation
Published: 6/2/2010
Authors: Tinh T. Nguyen, Bastien T. Pellegrin, Coralie Bernard, Xiaohong X. Gu, Justin M Gorham, Paul E Stutzman, Alexander J. Shapiro, Walter Eric Byrd, Joannie W Chin
Abstract: The release of nanoparticles from nanocomposite coatings during their life cycle potentially has negative effects to the environments and presents a roadblock to their uses. The degradation and nanoparticle release of amine-cured epoxy coatings conta ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905834

10. Critical Role of Particle/Polymer Interface in Long-term Performance of Nanofilled Polymeric Coatings
Published: 5/17/2010
Authors: Xiaohong X. Gu, Guodong Chen, Minhua Zhao, Stephanie S Watson, Tinh T. Nguyen, Joannie W Chin, Jonathan W. Martin
Abstract: In this study, the role of the nanoparticle/polymer interface in the long-term UV weathering performance of a nano-ZnO filled polyurethane (PU) coating system was investigated. The effects of the parameters that can influence the particle/polymer int ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905211



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