Abstract

Overview

With rapid technological advancements, the proliferation of electrical and electronic devices has significantly increased. These devices commonly utilize wireless technologies for intercommunication, exposing individuals to electromagnetic waves in their daily environments.

Findings

• The study introduces an electromagnetic absorber developed from wastepaper incorporated with boric acid at varying concentrations (5, 10, 20, and 30 wt%).
• Comparative analysis included mineral additives such as Copper (Cu) and Aluminum (Al).
• Three types of wastepaper – office, newsprint, and cardboard – were tested for their electromagnetic absorption capabilities.
• Newsprint displayed superior absorption effectiveness, achieving up to 40 dB, while the materials with Cu and Al reached absorption peaks at 30 dB and 20 dB, respectively.

Conclusion

The results confirm that incorporating boric acid into wastepaper offers a viable solution for electromagnetic absorption, potentially mitigating health risks associated with electromagnetic exposure. This method not only utilizes waste materials but also enhances safety by reducing electromagnetic exposure in everyday environments. Applying boric acid as a surface layer also proved beneficial for absorption rates.