Title: Characterization and Sustainable Retting of Ragweed Fibers

Authors: Elizabeth N. Alvizo, Jitendra S. Tate, Serra E. Holthaus and Jennifer A. Irvin

DOI: 10.33599/nasampe/s.20.0254

Abstract: This work aims to characterize the North American native plant, Ambrosia trifida, commonly known as ragweed. The purpose of this research is to build a cost-effective manufacturing process that will produce quality microfibers to be used as a reinforcement in polymer matrix composite (PMC) applications. Chemical retting methods were employed and evaluated based on cellulose content extracted. Hydrogen peroxide (H2O2) was used to expedite the retting process as previous experiments have shown it to produce cellulose with less impurities. Water retting was conducted in parallel with H2O2. Distilled, tap, and river water were compared based on impurities and time allotted. Sodium hydroxide chemical treatment was used to cleanse the fiber from non-cellulose material. The overall mechanical properties of natural fiber reinforced PMC are highly dependent on morphology, aspect ratio, hydrophilic tendency and dimensional stability of the fibers. Scanning Electron Microscopy (SEM) was used for morphology studies of the fiber. Mechanical properties were identified using MTS Exceed. Tensile strength, tensile modulus, and elongation at break mechanical properties were compared to commercially available natural fibers, such as jute, kenaf, hemp, and flax. After retting, the ragweed fibers were ground up and converted to cellulose acetate through esterification. The soluble cellulose acetate was characterized using Fourier Transform Infrared Spectroscopy (FT-IR) and titrated to determine the degree of esterification. Properties of ragweed based cellulose acetate were compared to commercially sourced cellulose acetate. The resultant cellulose acetate was a soluble polymer that could be electrospun to form a nanofiber.

References: Van Rijswijk, K., Brouwer, W., & Beukers, A. (2001). Application of Natural Fibre Composites in the Development of Rural Societies. Retrieved 19 January 2020, from http://www.fao.org/tempref/GI/Reserved/FTP_FaoRne/morelinks/Publications/English/Natural-Fibre-Composites.pdf Vink, J. P., Soltani, N., Robinson, D. E., Tardif, F. J., Lawton, M. B., & Sikkema, P. H. (2012). Occurrence and distribution of glyphosate-resistant giant ragweed (Ambrosia trifida L.) in southwestern Ontario. Canadian Journal of Plant Science, 92(3), 533-539. Powles, S. B. (2008). Evolved glyphosate‐resistant weeds around the world: lessons to be learnt. Pest management science, 64(4), 360-365. Andrew M. Westhoven, Vince M. Davis, Kevin D. Gibson, Stephen C. Weller, and William G. Johnson (2008) Field Presence of Glyphosate-Resistant Horseweed (Conyza Canadensis), Common Lambsquarters (Chenopodium Album), and Giant Ragweed (Ambrosia Trifida) Biotypes with Elevated Tolerance to Glyphosate. Weed Technology: July 2008, Vol. 22, No. 3, pp. 544- 548. M. Tahir, Paridah & Ahmed, Amel & SaifulAzry, Syeed & Ahmed, Zakiah. (2011). Retting process of some bast plant fibres and its effect on fibre quality: A review. BioResources. 6. 5260-5281. Ray, D., Sarkar, B. K., Rana, A. K., & Bose, N. R. (2001). Effect of alkali treated jute fibres on composite properties. Bulletin of materials science, 24(2), 129-135. Konwarh, R., Karak, N., & Misra, M. (2013). Electrospun cellulose acetate nanofibers: The present status and gamut of biotechnological applications. Biotechnology Advances, 31(4), 421–437. https://doi.org/10.1016/j.biotechadv.2013.01.002 Meng, C., Cao, G.-P., Yan, Y.-Z., Zhao, E.-Y., Hou, L.-Y., & Shi, H.-Y. (2017). Synthesis of cellulose acetate propionate with controllable contents and distributions of acetyl and propionyl in the C2, C3 and C6 positions. Reaction Kinetics, Mechanisms and Catalysis, 122(2), 1031–1047. https://doi.org/10.1007/s11144-017-1260-5 Rosenthal, A. J. (1967). The role of acid catalysts in the manufacture of cellulose acetate. Pure and Applied Chemistry, 14, 535–546. https://doi.org/10.1351/pac196714030535 Shoba, B., Jeyanthi, J., & Vairam, S. (2018). Synthesis, characterization of cellulose acetate membrane and application for the treatment of oily wastewater. Environmental Technology, https://doi.org/10.1080/09593330.2018.1543353. Feldman, D. (2015). Cellulose Nanocomposites. Journal of Macromolecular Science, Part A: Pure and Applied Chemistry, 52(4), pp.322-329.

Conference: SAMPE 2020 | Virtual Series

Publication Date: 2020/06/01

SKU: TP20-0000000254

Pages: 10

Price: FREE