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Functionalized Starch as a Novel Eco-Friendly Vulcanization Accelerator Enhancing Mechanical Properties of Natural Rubber

Functionalized Starch as a Novel Eco-Friendly Vulcanization Accelerator Enhancing Mechanical Properties of Natural Rubber

Kuncai Li, Jianhua You, Yu Liu, Kaizheng Zhu, Chengliao Xue, Xiwei Guo, Zhifen Wang, Yucang Zhang

Carbohydr Polym. 2020 Mar 1;231:115705.

PMID: 31888836

Abstract:

A novel eco-friendly vulcanization accelerator, starch supported sodium isobutyl xanthate (SSX) has been synthesized firstly. The modification of starch using sodium isobutyl xanthate (SIBX) has improved the thermal stability significantly, and the vulcanization process of natural rubber (NR) could be accelerated by SSX at 145 ℃ accordingly. More importantly, SSX can be dispersed into NR matrix uniformly along with the strong interfacial interaction between SSX and NR, as evidenced by the constrained rubber chains around SSX surface. In addition, mechanical properties of the obtained NR have been enhanced remarkably, showing a 22.4 % increase in tensile strength when compared with traditional vulcanization accelerator. Laying on the fact that a novel vulcanization accelerator has been fabricated successfully using SIBX functionalized starch, new strategies for the preparation of green vulcanization accelerators and the functional application of biopolymers can be provided.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP18395307	Isobutyl(trimethoxy)silane		18395-30-7	Price

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