PMID- 32715193 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240329 IS - 2470-1343 (Electronic) IS - 2470-1343 (Linking) VI - 5 IP - 28 DP - 2020 Jul 21 TI - On the Design of Novel Biofoams Using Lignin, Wheat Straw, and Sugar Beet Pulp as Precursor Material. PG - 17078-17089 LID - 10.1021/acsomega.0c00721 [doi] AB - In this paper, we report the synthesis and characterization of pyrolyzed lignin compacts reinforced with 50 wt % wheat straw (WS) or sugar beet pulp (SBP) fibers. The compacts were pyrolyzed at 300, 500, 700, and 900 degrees C in an Ar atmosphere. Detailed thermogravimetric analysis (TGA), thermomechanical analysis (TMA), Fourier transform infrared (FTIR) spectroscopy, and microstructure analysis were performed on these samples. FTIR analysis showed that pyrolysis of lignin-WS and lignin-SBP resulted in aromatic char. Scanning electron microscope (SEM) studies showed that foams obtained by pyrolyzing both lignin-50 wt % SBP and lignin-50 wt % WS composites have a cellular structure. X-ray tomography and energy-dispersive spectrometry (EDS) studies showed that pyrolysis of wheat straw caused the formation of mineral-rich nodules in the pyrolyzed lignin matrix, which was responsible for the denser and uniform microstructure of the lignin-WS composites. Due to this reason, the lignin-WS composites were denser and had a better mechanical strength as compared to the lignin-SBP composites. Both the compositions also showed temperature-dependent wettability behavior. CI - Copyright (c) 2020 American Chemical Society. FAU - Gupta, Surojit AU - Gupta S AD - Department of Mechanical Engineering, University of North Dakota, Grand Forks, North Dakota 58201, United States. FAU - Dey, Maharshi AU - Dey M AD - Department of Mechanical Engineering, University of North Dakota, Grand Forks, North Dakota 58201, United States. FAU - Javaid, Sabah AU - Javaid S AD - Biomedical Engineering Program, School of Computer Science and Electrical Engineering, University of North Dakota, Grand Forks, North Dakota 58201, United States. FAU - Ji, Yun AU - Ji Y AD - Department of Chemical Engineering, University of North Dakota, Grand Forks, North Dakota 58201, United States. FAU - Payne, Scott AU - Payne S AD - NDSU Electron Microscopy Center, North Dakota State University, Fargo, North Dakota 58102, United States. LA - eng PT - Journal Article DEP - 20200707 PL - United States TA - ACS Omega JT - ACS omega JID - 101691658 PMC - PMC7376692 COIS- The authors declare no competing financial interest. EDAT- 2020/07/28 06:00 MHDA- 2020/07/28 06:01 PMCR- 2020/07/07 CRDT- 2020/07/28 06:00 PHST- 2020/02/18 00:00 [received] PHST- 2020/06/04 00:00 [accepted] PHST- 2020/07/28 06:00 [entrez] PHST- 2020/07/28 06:00 [pubmed] PHST- 2020/07/28 06:01 [medline] PHST- 2020/07/07 00:00 [pmc-release] AID - 10.1021/acsomega.0c00721 [doi] PST - epublish SO - ACS Omega. 2020 Jul 7;5(28):17078-17089. doi: 10.1021/acsomega.0c00721. eCollection 2020 Jul 21.