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Author: joannie chin
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Displaying records 11 to 20 of 57 records.
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11. Characterization of Surface Accumulation and Release of Nanosilica During Irradiation of Polymer Nanocomposites with Ultraviolet Light
Published: 8/12/2012
Authors: Tinh Nguyen, Bastien T. Pellegrin, Coralie Bernard, Savelas A Rabb, Paul E Stutzman, Justin M Gorham, Xiaohong 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

12. Chemical and Physical Characterization of Poly(p-phenylene benzobisoxazole) Fibers Used in Body Armor
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7237
Published: 5/1/2006
Authors: Joannie W Chin, E Byrd, Amanda Lattam Forster, Xiaohong Gu, Tinh Nguyen, Kirk D Rice, Walter J. Rossiter, S J Scierka, John R Sieber, Paul E Stutzman, Li Piin Sung
Abstract: Problems with the performance and durability of body armor based on poly(p-phenylene benzobisoxazole (PBO) fiber became apparent in the summer of 2003, when PBO-based body armor that was less than 8 months was penetrated by a bullet. Mechanical te ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860615

13. Chemical and Physical Characterization of Poly(p-phenylene-2,6-benzobisoxazole) Fibers Used in Body Armor: Temperature and Humidity Aging
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7373
Published: 11/1/2006
Authors: Joannie W Chin, E Byrd, Cyril Clerici, Amanda Lattam Forster, M Oudina, Li Piin Sung, Kirk D Rice
Abstract: In recent years, poly(p-phenylene-2,6-benzobisoxazole) (PBO) fibers have become prominent in high strength applications such as body armor, ropes and cables, and recreational equipment. The objectives of this study were to expose woven PBO body arm ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860679

14. Critical Gaps in Durability Data for FRP Composites in Civil Infrastructure
Published: 5/1/2000
Authors: V M Karbhari, Joannie W Chin, D R Reynaud
Abstract: Although fiber reinforced polymer (FRP) composites are increasingly being used for the renewal of civil infrastructure, there are still some major questions related to the durability of these materials in a civil engineering environment. This concer ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=860268

15. 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 Nguyen, Joannie W Chin, Jonathan W. (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

16. Degradation and Nanofiller Release of Polymer Nanocomposites Exposed to UV
Published: 7/15/2009
Authors: Tinh Nguyen, Bastien T. Pellegrin, Alexander J. Shapiro, Xiaohong Gu, Joannie W Chin
Abstract: Nanofillers are increasingly used to enhance multifunctional properties of polymers. However, recent research suggests that nanomaterials may have a negative impact on the environmental health and safety. Since polymers are susceptible to photodegrad ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902990

17. Degradation and Nanoparticle Release of Nanocomposite Coatings Exposed to UV Radiation
Published: 6/2/2010
Authors: Tinh Nguyen, Bastien T. Pellegrin, Coralie Bernard, Xiaohong 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

18. Development of Soft Armor Conditioning Protocols for NIJ 0101.06: Analytical Results
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7627
Published: 9/24/2009
Authors: Amanda Lattam Forster, Kirk D Rice, Michael A Riley, Guillaume Messin, Sylvain H. Petit, Cyril Clerici, Gale Antrus Holmes, Joannie W Chin
Abstract: This publication details the four major phases of analytical development work, coupled with several additional side studies, undertaken by the Office of Law Enforcement Standards in writing the Flexible Armor Conditioning Protocol in NIJ 0101.06. Th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902601

19. Direct Evidence of Nanoparticle Release from Epoxy Nanocomposites Exposed to UV Radiation
Published: 4/14/2010
Authors: Tinh Nguyen, Bastien T. Pellegrin, Coralie Bernard, Xiaohong Gu, Justin M Gorham, Paul E Stutzman, Alexander J. Shapiro, Walter Eric Byrd, Joannie W Chin
Abstract: This study assessed the fate of SiO2 nanoparticles (nanoSiO2) in epoxy/nanoSiO2 composites exposed to ultraviolet (UV) radiation. The matrix was a stoichiometric mixture of adiglycidyl ether of bisphenol A epoxy and an aliphatic tri-amine. Films of u ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905527

20. Effect of Artificial Perspiration and Cleaning Chemicals on Mechanical and Chemical Properties of Ballistic Fibers
Published: 1/1/2009
Authors: Joannie W Chin, Sylvain H. Petit, Amanda Lattam Forster, Michael A Riley, Kirk D Rice
Abstract: During routine field use of soft body armor, the ballistic panels often become saturated with perspiration. This condition motivates the user to clean and/or deodorize the armor, and anecdotal evidence is given for various methods used to accomplish ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=861547



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