| Title: | Scaled Synthesis of Polyamine-Modified Cellulose Nanocrystals from Bulk Cotton and Their Use for Capturing Volatile Organic Compounds |
| Author(s): | Brummel BR; Narangoda CJ; Attia MF; Swasy MI; Smith GD; Alexis F; Whitehead DC; |
| Address: | "Department of Chemistry, Clemson University, Clemson, SC 29634, USA. Baker Commodities, Inc., Vernon, CA 90058, USA. School of Biological Sciences and Engineering, Yachay Tech University, Urcuqui 1000650, Ecuador" |
| ISSN/ISBN: | 2073-4360 (Electronic) 2073-4360 (Linking) |
| Abstract: | "We have previously demonstrated that cellulose nanocrystals modified with poly(ethylenimine) (PEI-f-CNC) are capable of capturing volatile organic compounds (VOCs) associated with malodors. In this manuscript, we describe our efforts to develop a scalable synthesis of these materials from bulk cotton. This work culminated in a reliable protocol for the synthesis of unmodified cellulose nanocrystals (CNCs) from bulk cotton on a 0.5 kg scale. Additionally, we developed a protocol for the modification of the CNCs by means of sequential 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO) oxidation and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC) coupling to modify their surface with poly(ethylenimine) on a 100 g scale. Subsequently, we evaluated the performance of the PEI-f-CNC materials that were prepared in a series of VOC capture experiments. First, we demonstrated their efficacy in capturing volatile fatty acids emitted at a rendering plant when formulated as packed-bed filter cartridges. Secondly, we evaluated the potential to use aqueous PEI-f-CNC suspensions as a spray-based delivery method for VOC remediation. In both cases, the PEI-f-CNC formulations reduced detectable malodor VOCs by greater than 90%. The facile scaled synthesis of these materials and their excellent performance at VOC remediation suggest that they may emerge as a useful strategy for the remediation of VOCs associated with odor" |
| Keywords: | VOCs cellulose nanocrystals odor poly(ethylenimine) polyamines volatile fatty acids; |
| Notes: | "PubMed-not-MEDLINEBrummel, Beau R Narangoda, Chandima J Attia, Mohamed F Swasy, Maria I Smith, Gary D Jr Alexis, Frank Whitehead, Daniel C eng Fats and Proteins Research Foundation/ South Carolina Department of Agriculture/ Clemson University Research Foundation/ South Carolina Research Authority/ Switzerland 2021/09/29 Polymers (Basel). 2021 Sep 10; 13(18):3060. doi: 10.3390/polym13183060" |
