Flexible conductive polypyrrole nanocomposite membranes based on bacterial cellulose with amphiphobicity. (6th March 2015)

• Record Type: Journal Article
• Authors: Tang, Lian; Han, Jinlu; Jiang, Zhenlin; Chen, Shiyan; Wang, Huaping
• Is Part Of: Carbohydrate polymers. Volume 117(2015)
• Page Start: 230
• Page End: 235
• Publication Date: 2015-03-06
• Subjects: Bacterial cellulose -- Polypyrrole -- Nanocomposite -- Amphiphobicity; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2014.09.049
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: Flexible conductive PPy/BC memebranes were prepared through in situ chemical synthesis. The prepared PPy/BC nanocomposites had good amphiphobic properties. SPPy/BC nanocomposites demonstrated a good electromagnetic shielding effectiveness. Abstract: Flexible conductive polypyrrole nanocomposite membranes based on bacterial cellulose (BC) with amphiphobicity have been successfully prepared through in situ chemical synthesis and then infiltrated with polysiloxane solution. The results suggested that polypyrrole (PPy) nanoparticles deposited on the surface of BC formed a continuous core–shell structure by taking along the BC template. After modification with polysiloxane, the surface characteristics of the conductive BC membranes changed from highly hydrophilic to hydrophobic. The AFM images revealed that the roughness of samples after polysiloxane treatment increased along with the increase of pyrrole concentration. The contact angles (CAs) data revealed that the highest water contact angle and highest oil contact angle are 160.3° and 136.7°, respectively. The conductivity of the amphiphobic membranes with excellent flexibility reached 0.32 S/cm and demonstrated a good electromagnetic shielding effectiveness with an SE of 15 dB which could be applied in electromagnetic shielding materials with self-cleaning properties. It opened a new field of potential applications of BC materials.