Abstract
Dandelion (Taraxacum mongolicum) is known as a perennial herbaceous plant belonging to the Asteraceae family. Its rhizome contains a lot of rubber. Adopting three different methods, namely the nucleobase method, acyloxy method and solvent method, three kinds of rubber were extracted from taraxacum kok-saghyz(TKS), and analyzed. The results of the comparative studies indicated that although the nucleobase method had high extraction rate and short extraction time, the purity of the extraction rubber was low, while the solvent method, although the extraction rate was low and the extraction time was long, the purity of the extraction rubber was relatively high. The molecular weight of nucleobase method and acyloxy method extraction gum were slightly lower than that of natural rubber(NR), but the molecular weight of solvent method extraction gum was much lower. The thermal stability of acyloxy method extraction gum and solvent method extraction gum was similar to that of natural rubber, while the thermal stability of nucleobase method extraction gum was the highest among the four. The stress of nucleobase extraction rubber, acyloxy extraction rubber and natural rubber was significantly higher than that of solvent extraction rubber. The glass transition temperature of TKS rubber is slightly lower than that of natural rubber. Elongation at break of the nucleobase extraction rubber and acyloxy extraction rubber was obviously lower than that of the solvent method and natural rubber.
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Acknowledgements
The authors are grateful to Zhang Xuechao, Institute of Agricultural Sciences, Yili Autonomous Prefecture, Xinjiang, for providing rubber grass for this experiment. The authors are thankful to Horizontal Project Fund of Beijing Linglong Dandelion Technology Development Co. (HD-KYH-2018269).Undergraduate Innovation and Entrepreneurship Program of Hainan University (201910589044).
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Zhuo, Y., Zhang, C., Zhao, Y. et al. Composition properties of rubber from parts of Taraxacum Kok-saghyz roots. J Rubber Res 24, 607–613 (2021). https://doi.org/10.1007/s42464-021-00141-4
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DOI: https://doi.org/10.1007/s42464-021-00141-4