绿色水基提取蒲公英橡胶工艺优化

IF 1.2 4区工程技术 Q4 POLYMER SCIENCE

Rubber Chemistry and Technology Pub Date : 2022-08-03 DOI:10.5254/rct.22.77883

Ruifeng Zhao, Genshi Liu, Rongzhen Fu, Jichuan Zhang, Xiang Jie, Yiyang Dong, Zifeng He, Q. Nie

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引用次数: 0

摘要

Taraxacum kok-saghyz (TKS)，被称为俄罗斯蒲公英，可以生产高品质的天然橡胶。结果表明，TKS根中橡胶干重含量约为6-9%，其中根皮和根肉中橡胶含量分别为61%和39%。木质素和纤维素含量约占总根的40%。提出并优化了两种新型水基橡胶萃取工艺，即强剪切水萃取工艺和酸碱萃取工艺。这两种工艺使橡胶的纯度分别达到91%和94%左右。TKS橡胶具有与Hevea NR相似的组成和分子结构，并且TKS橡胶样品没有出现应变诱导结晶(SIC)现象。将TKS橡胶混合到冬季轮胎胎面配方中并进行了测试。结果表明，与其他配方相比，其加工性能和力学性能没有显著差异。

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PROCESS OPTIMIZATION OF GREEN AQUEOUS-BASED EXTRACTION TECHNOLOGY OF TARAXACUM KOK-SAGHYZ RUBBER

Taraxacum kok-saghyz (TKS), known as Russian dandelion, can produce high-quality natural rubber. The dry weight content of rubber in the TKS roots was found to be approximately 6–9%, of which 61% and 39% were stored in the root bark and root flesh, respectively. The content of lignin and holocellulose accounted for about 40% of the total root. Two new aqueous-based rubber extraction processes were proposed and optimized, namely, the strong water shearing process and the acid–base extraction process. These two processes made the purity of rubber reach about 91% and 94%, respectively. TKS rubber was characterized as having similar composition, and molecular structure to Hevea NR, and TKS rubber samples did not exhibit the strain-induced crystallization (SIC) phenomenon. TKS rubber was blended into a winter tire tread formulation and tested. The results showed no significant differences in processing and mechanical properties from the other formulations.

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来源期刊

Rubber Chemistry and Technology 工程技术-高分子科学

CiteScore

3.50

自引率

20.00%

发文量

审稿时长

3.6 months

期刊介绍： The scope of RC&T covers: -Chemistry and Properties- Mechanics- Materials Science- Nanocomposites- Biotechnology- Rubber Recycling- Green Technology- Characterization and Simulation. Published continuously since 1928, the journal provides the deepest archive of published research in the field. Rubber Chemistry & Technology is read by scientists and engineers in academia, industry and government.