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<p>Tungsten disulfide (WS<sub>2</sub>) stands out as a fascinating member of the transition metal dichalcogenides (TMDs) family. Recently, there has been a focus on introducing WS<sub>2</sub> nanosheets into various polymers to expand their application in different fields. This study explores the innovative application of WS<sub>2</sub> nanosheets in natural rubber latex (NRL) using tannic acid (TA) as a green exfoliating agent. WS<sub>2</sub> nanosheets were synthesized through sand grinding of bulk WS<sub>2</sub> with the assistance of TA. The resulting TA-modified WS<sub>2</sub> nanosheets (WT) were then dispersed in NRL, leading to the fabrication of NR/WS<sub>2</sub> (NWT) nanocomposites via the latex double-dipping method. An insertion of 1.5 phr of WT significantly enhanced the mechanical, thermal, and antibacterial properties, as well as the biocompatibility of natural rubber (NR). These improvements were attributed to the uniform dispersion of WT nanosheets in NRL, the interaction between WS<sub>2</sub> and NR through TA, and the reinforcement effect from excess TA. This advancement demonstrates the potential of WS<sub>2</sub> nanosheets-based NR nanocomposites for industrial development and innovation in various fields, especially the biomedical field.</p> Graphical abstract <p></p>

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Green synthesis of tannic acid-modified tungsten disulfide nanosheets: a cost effective pathway towards tailoring the properties of natural rubber

  • 期刊论文

  • 发表日期：

    2025年5月22日

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  • Anandavally Sabarisadanam Sethulekshmi,
  • Kuruvilla Joseph,
  • Abi Santhosh Aprem,
  • Suja Bhargavan Sisupal,
  • Vinay Deep Punetha,
  • Appukuttan Saritha

摘要

Tungsten disulfide (WS2) stands out as a fascinating member of the transition metal dichalcogenides (TMDs) family. Recently, there has been a focus on introducing WS2 nanosheets into various polymers to expand their application in different fields. This study explores the innovative application of WS2 nanosheets in natural rubber latex (NRL) using tannic acid (TA) as a green exfoliating agent. WS2 nanosheets were synthesized through sand grinding of bulk WS2 with the assistance of TA. The resulting TA-modified WS2 nanosheets (WT) were then dispersed in NRL, leading to the fabrication of NR/WS2 (NWT) nanocomposites via the latex double-dipping method. An insertion of 1.5 phr of WT significantly enhanced the mechanical, thermal, and antibacterial properties, as well as the biocompatibility of natural rubber (NR). These improvements were attributed to the uniform dispersion of WT nanosheets in NRL, the interaction between WS2 and NR through TA, and the reinforcement effect from excess TA. This advancement demonstrates the potential of WS2 nanosheets-based NR nanocomposites for industrial development and innovation in various fields, especially the biomedical field.

Graphical abstract