Scholarlink

<p>Natural rubber (NR) latex is a renewable colloidal dispersion used in medical gloves, coatings, and flexible products. It is known for its excellent elasticity and film-forming ability but is limited by insufficient mechanical robustness and chemical resistance. Incorporating nanofillers, such as graphene oxide (GO), is an effective approach to enhance its performance; however, achieving strong interfacial compatibility between hydrophilic GO and the nonpolar rubber matrix remains challenging. To overcome this issue, a multifunctional interfacial design inspired by mussel adhesion chemistry was developed to construct a hierarchical and cohesive GO network within the NR latex matrix. A tannic acid-based modifier (TM) bearing catechol and thiol groups was synthesized and anchored onto latex particles <i>via</i> hydrogen bonding with surface proteins and phospholipids, enabling subsequent <i>π</i>–<i>π</i> interactions and hydrogen bonding with GO nanosheets. This guided the selective self-assembly of GO into a continuous segregated network along the latex particle boundaries. Hierarchical interface reinforcement was achieved through Eu<sup>3+</sup> ligand coordination. The incorporation of GO and enhancement of interfacial interactions promoted strain-induced crystallization, resulting in increased crystallinity and improved load transfer. The resulting composite film containing 0.5 part per hundred rubber GO and the bioinspired interface exhibited a tensile strength that was 107.8% higher than that of the pure NR latex film, while maintaining an elongation at break of 915%. Tear strength increased by 118.5%, toughness reached 61.7 MJ/m<sup>3</sup>, nitrogen permeability decreased by 20.1%, and antibacterial efficiency against both <i>Escherichia coli</i> and <i>Staphylococcus aureus</i> reached 99.9%. The films also exhibited enhanced resistance to organic solvents, acids, and alkalis. This study provides a green and scalable strategy for fabricating high-performance NR latex-based products suitable for medical, protective, and engineering applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Synergistic Bioinspired Interface and Segregated Graphene Oxide Networks Enabling Enhanced Mechanical Strength and Chemical Resistance in Natural Rubber Latex Composites

  • 期刊论文

  • 发表日期：

    2026年3月10日

查看全文
  • Xiao-Da Pan,
  • Yun-Kui Song,
  • Chong-Zhi Sun,
  • Chao-Yang Yuan,
  • Zong-Min Zhu,
  • Jia-Ran Wang,
  • Xian-Ze Yin,
  • Hong-Tao Liu,
  • Li Liu,
  • Long Zheng

摘要

Natural rubber (NR) latex is a renewable colloidal dispersion used in medical gloves, coatings, and flexible products. It is known for its excellent elasticity and film-forming ability but is limited by insufficient mechanical robustness and chemical resistance. Incorporating nanofillers, such as graphene oxide (GO), is an effective approach to enhance its performance; however, achieving strong interfacial compatibility between hydrophilic GO and the nonpolar rubber matrix remains challenging. To overcome this issue, a multifunctional interfacial design inspired by mussel adhesion chemistry was developed to construct a hierarchical and cohesive GO network within the NR latex matrix. A tannic acid-based modifier (TM) bearing catechol and thiol groups was synthesized and anchored onto latex particles via hydrogen bonding with surface proteins and phospholipids, enabling subsequent π–π interactions and hydrogen bonding with GO nanosheets. This guided the selective self-assembly of GO into a continuous segregated network along the latex particle boundaries. Hierarchical interface reinforcement was achieved through Eu3+ ligand coordination. The incorporation of GO and enhancement of interfacial interactions promoted strain-induced crystallization, resulting in increased crystallinity and improved load transfer. The resulting composite film containing 0.5 part per hundred rubber GO and the bioinspired interface exhibited a tensile strength that was 107.8% higher than that of the pure NR latex film, while maintaining an elongation at break of 915%. Tear strength increased by 118.5%, toughness reached 61.7 MJ/m3, nitrogen permeability decreased by 20.1%, and antibacterial efficiency against both Escherichia coli and Staphylococcus aureus reached 99.9%. The films also exhibited enhanced resistance to organic solvents, acids, and alkalis. This study provides a green and scalable strategy for fabricating high-performance NR latex-based products suitable for medical, protective, and engineering applications.