Achieving ultra-tear resistant high-performance natural rubber nanocomposite via bio-inspired lignocellulosic compatibilization

Article

Hosseinmardi, Alireza, Amiralian, Nasim, Martin, Darren J. and Annamalai, Pratheep K.. 2024. "Achieving ultra-tear resistant high-performance natural rubber nanocomposite via bio-inspired lignocellulosic compatibilization." Industrial Crops and Products. 207 (Part 1). https://doi.org/10.1016/j.indcrop.2023.117729
Article Title

Achieving ultra-tear resistant high-performance natural rubber nanocomposite via bio-inspired lignocellulosic compatibilization

ERA Journal ID5313
Article CategoryArticle
AuthorsHosseinmardi, Alireza, Amiralian, Nasim, Martin, Darren J. and Annamalai, Pratheep K.
Journal TitleIndustrial Crops and Products
Journal Citation207 (Part 1)
Article Number117729
Number of Pages11
Year2024
PublisherElsevier
Place of PublicationNetherlands
ISSN0926-6690
1872-633X
Digital Object Identifier (DOI)https://doi.org/10.1016/j.indcrop.2023.117729
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S0926669023014942
AbstractElastomers which are strong, tough, and resistant to tearing, are highly attractive for engineering applications such as conveyer belts, high-performance seals, tires, and soft robotics. Enhancing these properties for natural rubber materials is possible by utilizing nanoscale fillers, however the nanocomposite approach remains challenging because (a) nanofillers can impede latex molecular crosslinking, and (b) reduce the material’s inherent elasticity and compliance. This study demonstrates an approach to prepare ultra-strong, tear-resistant natural rubber nanocomposites using cellulose nanofibers decorated with nanoscale lignin. The reinforcement of latex with 0.1 wt% cellulose nanofibre compatibilized with 0.5 wt% lignin resulted in a 256% improvement in tear strength, 95% in tensile strength, and 50% in toughness, while retaining the elongation at break. Such a simultaneous improvement in tensile and tear properties has not been previously achieved through the latex casting method with any other fillers, and herein it is attributed to the nanoscale reinforcement efficiency of nanofibre coupled with enhanced interfacial adhesion between nanofibers and NR latex with the introduction of nanoscale lignin. This compatibilization approach has also resulted in improved resilience in the nanocomposites, as evidenced by the cycling loading and unloading analysis.
KeywordsCellulose nanofibre; Lignin; Nanocomposites; Natural rubber latex ; Elastomer; Tear resistance ; Toughness
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020300607. Food technology
Byline AffiliationsUniversity of Queensland
Centre for Future Materials
School of Agriculture and Environmental Science
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