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Natural Polymers: Nanocellulose

Natural Polymers: Nanocellulose. CME/MSE 404g Isomers Callie Williams Julian Kretschmann Theodora Asafo-Adjei August Wempe Yifan.Du. Structure and Morphology. Composed of repeating units of β -1,4 glucose by glycosidic linkage Morphology

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Natural Polymers: Nanocellulose

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  1. Natural Polymers: Nanocellulose CME/MSE 404g Isomers Callie Williams Julian Kretschmann Theodora Asafo-Adjei August Wempe Yifan.Du

  2. Structure and Morphology • Composed of repeating units of β-1,4 glucose by glycosidic linkage • Morphology • Chains create the structure of nano or micro fibrils with diameters ranging from 2-20nm to several micrometers • Crystallites also make up its morphological composition within amorphous regions.

  3. Hardwood vs Softwood Failure strain for softwoods of cellulose films increased Hardwoods are more complex and heterogeneous. Have higher Runkel Ratios Chemo-mechanical separation properties based on softwoods Fibrillation of hardwood requires more passes

  4. Additives and their function • PTS Research Report 2008 • Cellulose (2009) 16:899 – 910 • http://www4.ncsu.edu/~ojrojas/acsabstracts.pdf • Advances in Polymer Science, 2006, Volume 205/2006, p. 59 ff

  5. Uses of Nanocellulose • There are many different fields that nanocellulose can be used. • Advanced Building Materials • Bioplastics • Material Enhancement such as paper

  6. References -EarthTechling.com. Images. EarthTechling LLC. 2011 -W. Stelte, A.R. Sanadi. Preparation and Characterization of Cellulose Nanofibers from Two CommercialHardwood and Softwood Pulps, Industrial Engineering and Chemistry Research. 2009, 48, 11211–11219 -PTS REsearch Report 2008 -Cellulose (2009) 16:899-910 -American Chemical SocietyDivision of Cellulose & Renewable Materials. 235th National Meeting & Exposition New Orleans, LAApril 6-10, 2008O. -Adcances in Polymer Science, 2006, Volume 2005/2006, p. 59 ff

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