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Improved oxidation resistance of organic/inorganic composite atomic layer deposition coated cellulose nanocrystal aerogels Public Deposited

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https://ir.library.oregonstate.edu/concern/articles/c534fq803

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  • Cellulose nanocrystal (CNC) aerogels are coated with thin conformal layers of Al₂O₃ using atomic layer deposition to form hybrid organic/inorganic nanocomposites. Electron probe microanalysis and scanning electron microscopy analysis indicated the Al₂O₃ penetrated more than 1500 μm into the aerogel for extended precursor pulse and exposure/purge times. The measured profile of coated fiber radius versus depth from the aerogel surface agrees well with simulations of precursor penetration depth in modeled aerogel structures. Thermogravimetric analysis shows that Al₂O₃ coated CNC aerogel nanocomposites do not show significant thermal degradation below 295°C as compared with 175°C for uncoated CNC aerogels, an improvement of over 100°C.
  • This is the publisher’s final pdf. The published article is copyrighted by the American Vacuum Society and can be found at: http://scitation.aip.org/content/avs/journal/jvsta.
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  • Smith, S. W., Buesch, C., Matthews, D. J., Simonsen, J., & Conley Jr, J. F. (2014). Improved oxidation resistance of organic/inorganic composite atomic layer deposition coated cellulose nanocrystal aerogels. Journal of Vacuum Science & Technology A, 32(4), 041508. doi:10.1116/1.4882239
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  • 32
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  • 4
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  • The authors acknowledge Yi Liu, Peter Eschbach, and Teresa Sawyer of the OSU Electron Microscopy Facility supported by the NSF MRI grant # 1040588, the Murdock Charitable Trust and the Oregon Nanoscience and Microtechnologies Institute. J. F. Conley, Jr., was supported by NSF DMR 0805372, S. W. Smith was supported by NSF CHE 1102637, J. Simonsen and C. Buesch were supported by a joint venture agreement with the USDA Forest Products Lab.
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  • description.provenance : Made available in DSpace on 2014-08-11T18:14:44Z (GMT). No. of bitstreams: 1 BueschChristianForestryImprovedOxidationResistance.pdf: 2397266 bytes, checksum: 290d9d3848a8d0c88c66fe2839399027 (MD5) Previous issue date: 2014-06-12
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