Chinese scientists have invented a revolutionary hydrogel to protect wood artifacts
Researchers in China have developed a unique hydrogel that could change the way maritime artifacts are restored forever. The problem of preserving wooden artifacts, especially those that have been in seawater for a long time, has always been extremely difficult. The aggressive environment - high salt concentration, the activity of microorganisms and fungi - literally destroys historical finds.
Traditional restoration methods have significant limitations. Prolonged freeze-drying, replacing water with polymers or carbon dioxide often damage the wood structure, making artifacts brittle and deformed. InterestingEngineering writes about this.
The brand new hydrogel combines several unique properties. Its components - potassium bicarbonate, silver nitrate, and sodium alginate (derived from brown algae) - create an extremely effective preservative.
Scientists conducted tests on 800-year-old wood from the Chinese ship Nanhai One, which sank off the southern coast of the country. The experiment showed impressive results: the hydrogel not only stops the destructive processes but also gradually dissolves without damaging the artifact.
Key advantages of the new method:
- Neutralization of acids to a depth of 1 cm
- Preservation of the cellular structure of wood
- Antibacterial protection
- Gradual self-dissolution without additional intervention
Different concentrations of silver nitrate allow for precise control of the preservation process. Gels with a lower concentration act faster but for less time, while those with a higher concentration provide long-term protection.
The researchers are confident that their development could be a breakthrough in the preservation of cultural heritage. The hydrogel not only preserves artifacts but also minimizes the risk of damage during restoration.
The next steps of the scientists are large-scale testing and adaptation of the technology for museum collections and archaeological finds.
This invention clearly demonstrates how modern scientific technologies can help preserve the most valuable evidence of our history.
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