Journal
EUROPEAN POLYMER JOURNAL
Volume 73, Issue -, Pages 137-148Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2015.10.007
Keywords
Carbon aerogel; Cellulose nanofibrils; Oil absorption; Optimization Response surface methodology (RSM)
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Funding
- U.S. Department of Agriculture Special Wood Utilization [R11-0515-041, R11-2219-510]
- University of Tennessee, Department of Forestry, Wildlife and Fisheries, Center for Renewable Carbon
- UTIA Innovation Grant
- Tennessee Experimental Station Project [TEN00422]
- Agricultural Experiment Station McIntire-Stennis Grant [TENOOMS-101]
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This research investigated the simultaneous effects of processing parameters in the making of carbon aerogel from cellulose nanofibrils (NFC). Variables such as peak temperature and heating rate at different levels were systematically investigated with the goal of parameter optimization using response surface methodology (RSM). A face-centered central composite design (CCF) was used to evaluate the feasible range of process conditions where the levels of peak temperature and heating rate were varied at levels ranging from 230 degrees C to 320 degrees C. Results indicated that the quadratic model developed for the response surface was adequate for the prediction of optimal parameters. Response surface predictions were developed to explore the integrated and feasible operating space. Optimum conditions were: 300 degrees C peak temperature and a heating rate of 8.00 degrees C/min. The carbon aerogel achieved approximately 90.10 g/g of the normalized oil absorption capacity despite a weight reduction percentage of 82%. (C) 2015 Elsevier Ltd. All rights reserved.
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