Abstract
The characteristic property of naturally-occurring geopolymers is a high content of humic materials that are recognized by the nitrogen function. Through a simulated geopolymerization, biopolymers with non-nitrogen function, such as xanthan gum, were found to have the characteristics of humic acid by means of UV–Vis spectrometry. This fact ascertains that any kind of biopolymer may naturally transform to a geopolymer. A geopolymer is a type of crosslinked long-chain compound, built in three-dimensional structures whose property is immune to microbial degradation. A crosslinked biopolymer was shown to have the same characterization as a geopolymer that has a long life due to its crosslinking capacity and anti-microbial properties. In this study, the formation of petroleum-based geopolymers (e.g., kerogen) was introduced. This study may elucidate the structure of geomacromolecules and the mechanism of their formation, closely related with crosslink reaction between inorganic and organic molecules. This will further change the conventional definition of geopolymer that involves only the inorganic geopolymer.
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Acknowledgements
This work was financially supported by the US Department of Energy (DOE), under the contract, DE-AC 2601 NT 41307. Authors would like to acknowledge Ms. Rachel Tucker for technical assistance.
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Kim, D., Lai, HT., Chilingar, G.V. et al. Geopolymer formation and its unique properties. Environ Geol 51, 103–111 (2006). https://doi.org/10.1007/s00254-006-0308-z
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DOI: https://doi.org/10.1007/s00254-006-0308-z