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Updated: Jan 10, 2026
Fabrication of a Functionalized Magnetic Bacterial Nanocellulose with Iron Oxide Nanoparticles
Published on: May 26, 2016
Constructing a stable high conductive network: Exploring AgNW distribution in bacterial nanocellulose for tunable
Jie Wang1, Jian Ding2, Keke Che3
1School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China; Nanchang Key Laboratory for Smart Biomaterials Regulation and Adaptation& School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China.
This study developed advanced electromagnetic interference (EMI) shielding materials using silver nanowires within bacterial nanocellulose. Controlled filler distribution and conductivity enhance EMI shielding performance.
Area of Science:
- Materials Science
- Nanotechnology
- Polymer Science
Background:
- Effective electromagnetic interference (EMI) shielding materials require optimal distribution of conductive nanofillers in polymer matrices.
- Bacterial nanocellulose (BNC) offers a promising matrix for developing novel shielding materials due to its unique structure.
Purpose of the Study:
- To create a stable conductive network of silver nanowires (AgNW) within a BNC matrix for enhanced EMI shielding.
- To investigate the impact of AgNW distribution (discontinuous and gradient) and composite porosity on shielding performance.
Main Methods:
- Modified step-by-step in situ biosynthesis to incorporate AgNW into BNC.
- Mechanical compression to control the thickness and porosity of AgNW/BNC composites.
- Characterization of conductivity and EMI shielding effectiveness.
Main Results:
- Achieved stable conductivity through interconnected AgNW networks within the BNC matrix.
- Demonstrated that gradient AgNW distribution enhances wave entry and propagation, increasing attenuation.
- Showed that increased spacing between conductive layers and sufficient material thickness improve shielding efficiency.
Conclusions:
- The EMI shielding performance of AgNW/BNC composites is tunable by controlling AgNW distribution and porosity.
- This approach offers a pathway to develop high-performance, lightweight EMI shielding materials.
