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Author: minhua zhao
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1. Role of Particle/Polymer Interphase in Long-Term Performance of Nanofilled Polymeric Coatings
Published: 9/3/2012
Authors: Xiaohong 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

2. More Durable or Vulnerable? --- Effect of Nanoparticles on Long-Term Performance of Polymeric Nanocomposites during UV Exposure
Published: 7/2/2012
Authors: Xiaohong 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

3. Role of Nanoparticles in Life Cycle of Nanocomposites
Published: 6/15/2010
Authors: Xiaohong 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

4. Critical Role of Particle/Polymer Interface in Long-term Performance of Nanofilled Polymeric Coatings
Published: 5/17/2010
Authors: Xiaohong 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

5. The Effects of Humidity and Surface Free Energy on Adhesion Force between AFM Tip and a Silane Self-Assembled Monolayer Film
Published: 2/17/2010
Authors: Chien-Chao Huang, Lijiang Chen, , Xiaohong Gu, Minhua Zhao, Tinh T. Nguyen, Sanboh Lee
Abstract: The relationship between AFM probe-sample adhesion force and relative humidity (RH) at five different levels of surface free energy (γs) of an organic self-assembled monolayer (SAM) has been investigated. Different γs levels were achieved b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904627

6. Subsurface Characterization of Carbon Nanotubes in Polymer Composites via Quantitative Electric Force Microscopy
Published: 2/3/2010
Authors: Minhua Zhao, Xiaohong Gu, Sharon E. Lowther, Cheol Park, Jerry Jean, Tinh T. Nguyen
Abstract: In this study, quantitative Electric Force Microscopy (EFM) characterization of CNTs dispersed in free-standing polymer composite films is pursued. The effect of experimental parameters including humidity conditions, EFM probe geometry, tip-sample ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904262

7. Studying Long-term Performance of a Nano-ZnO filled Waterborne Polyurethane Coating using Spectroscopies and Microscopies
Published: 9/9/2009
Authors: Xiaohong Gu, Dongmei Zhe, Stephanie S Watson, Guodong Chen, Minhua Zhao, Paul E Stutzman, Deborah L Stanley, Tinh T. Nguyen, Joannie W Chin, Jonathan W. Martin
Abstract: Although inorganic UV absorbers such as zinc oxide (ZnO) and cerium oxide (CeO2) exhibit numerous advantages compared to organic UV absorbers, the mechanisms of how these nanoparticles affect the long-term performance of polymeric coatings are less t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903215

8. 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 T. 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

9. Development of quantitative electric force microscopy for surface and subsurface characterization of nanostructures in polymeric coatings
Published: 4/1/2009
Author: Minhua Zhao
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902060

10. Subsurface mapping of nanofiller dispersion in polymeric coatings by quantitative electric force microscopy
Published: 9/29/2008
Authors: Minhua Zhao, Juntao Wu, Bastien T. Pellegrin, Xiaohong Gu, Tinh T. Nguyen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861624



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