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1. Protocols for Accelerating Laboratory Weathering and Measurements of Degradation of Polymer-Multiwalled Carbon Nanotube Composites
Series: Special Publication (NIST SP)
Report Number: 1200-15
Published: 7/24/2015
Authors: Li Piin Sung, Tinh Nguyen
Abstract: Polymer nanocomposites containing multi-walled carbon nanotubes (MWCNTs) are increasingly or potentially will be used in many large-volume industries. These advanced composites are exposed to severe mechanical and environmental stresses, such that, d ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918290

2. Investigating the Process of Surface Degradation and Nanoparticle Release of a Commercial Nanosilica / Polyurethane Coating Under UV Exposure
Published: 3/11/2015
Authors: Deborah L Stanley, Yu Lun (Yu-Lun (Josh)) Cheng, Savelas A Rabb, Peter J. Krommenhoek, Lee Lijian Yu, Tinh Nguyen, Li Piin Sung
Abstract: Considerable research has shown that many coatings properties such as mechanical, electrical, and ultra violet (UV) resistance are greatly enhanced by the addition of nanoparticles, which can potentially increase the use of nanocoatings for many outd ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=918001

3. New Insights into Subsurface Imaging of Carbon Nanotubes in Polymer Composites via Scanning Electron Microscopy
Published: 2/4/2015
Authors: Minhua Zhao, Bin Ming, Jae-Woo Kim, Luke J Gibbons, Xiaohong Gu, Tinh Nguyen, Cheol Park, Peter T Lillehei, John S Villarrubia, Andras Vladar, James Alexander Liddle
Abstract: Despite many studies of subsurface imaging of carbon nanotube (CNT)-polymer composites via scanning electron microscopy (SEM), significant controversy exists concerning the imaging depth and contrast mechanisms. We studied CNT-polyimide composites an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917530

4. Mechanisms of aging and release from weathered nanocomposites
Published: 10/31/2014
Authors: Tinh Nguyen, Wendel Wohlleben, Li Piin Sung
Abstract: Polymer nanocomposites are increasingly used in outdoor structures. However, polymers are susceptible to degradation by solar ultraviolet (UV) radiation, which potentially releases nanofiller during polymer nanocomposites‰ life cycle. Such release ma ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915587

5. A pilot interlaboratory comparison of protocols that simulate aging of nanocomposites and detect released fragments
Published: 10/1/2014
Authors: Wendel Wohlleben, Deborah L Stanley, Justin M Gorham, Li Piin Sung, Tinh Nguyen
Abstract: The safe use of nanocomposites depends, in part, on a good understanding of the fate of nanofillers throughout the nanocomposite,s lifecycle. Various modifications of ISO weathering protocols have been proposed to assess what is released and at which ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916125

6. Methods for the Measurement of Release of MWCNTs from MWCNT-Polymer Composites
Published: 9/18/2014
Authors: Debra L Kaiser, Aleksandr B. Stefaniak, Keana C K Scott, Tinh Nguyen, Jurg Schutz
Abstract: Multi-wall carbon nanotube (MWCNT)/polymer composites hold great promise as advanced materials for consumer and industrial applications. Throughout the life cycle of these composites, there is opportunity for release of particles that may contain MWC ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915842

7. Effect of Ozonation on Fungal Resistance of Bamboo and Oak
Published: 8/15/2014
Authors: Chi Hoang, Tinh Nguyen, Deborah L Stanley, Andrew Keith Persily, Richard Cosi
Abstract: Wood is gaining increased interest as a renewable building material. However, color changes, chemical and microbiological degradation can occur when lignocellulosic materials are exposed to environmental stressors such as ozone and elevated humidity. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911901

8. Nanoparticle Released from Consumer Products: Flooring Nanocoatings and Interior Nanopaints
Series: Technical Note (NIST TN)
Report Number: 1835
Published: 7/21/2014
Authors: Li Piin Sung, Tinh Nguyen, Andrew Keith Persily
Abstract: Nanoparticles are increasingly incorporated in flooring coatings and interior paints to improve their abrasion and microbial resistance. One particular concern of this application is the release of nanoparticles from these surfaces due to repeated m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914979

9. Effects of Temperature on Surface Accumulation and Release of Silica Nanoparticles in an Epoxy Nanocoating Exposed to UV Radiation
Published: 6/16/2014
Authors: Chun-Chieh Tien, Ching-Hsuan Chang, Bernard Hao-Chih Liu, Deborah L Stanley, Savelas A Rabb, Lee Lijian Yu, Tinh Nguyen, Li Piin Sung
Abstract: Polymer nanocoatings are increasingly used outdoors and in harsh environments. However, because most common polymers degraded by the weathering elements, nanoparticles in polymer nanocoatings may be released into the environments. Such nanoparticle r ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915955

10. Multi-method analysis of multiwall carbon nanotube polymer nanocomposite samples after photodegradation
Published: 6/16/2014
Authors: Elijah J Petersen, Thomas F. Lam, Justin M Gorham, Keana C K Scott, Christian John Long, Renu Sharma, Li Piin Sung, James Alexander Liddle, Tinh Nguyen
Abstract: Nanomaterials can be used as nanofillers to enhance the properties of polymeric materials. However, the effect of weathering on nanocomposites and the potential for nanomaterial release is not yet well understood. Multiple analytical methods are ne ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915812



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