Higher dielectric properties of semiconducting biopolymer composites of poly(3-hydroxy butyrate) (PHB) with polyaniline (PANI), carbon black, and plasticizer

• Published in: Polymer bulletin (Berlin, Germany) Vol. 75; no. 4; pp. 1681 - 1699
• Main Authors: El-hadi, Ahmed M., Al-Jabri, Fatma Y., Altaf, Waleed J.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-04-2018; Springer Nature B.V
• Subjects: Aluminum; Biocompatibility; Bioplastics; Biopolymers; Biosensors; Carbon black; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Composite materials; Dielectric properties; Electrical resistivity; Electrodes; Environmental impact; Hydrogen bonds; Mechanical properties; Organic Chemistry; Original Paper; Physical Chemistry; Polyanilines; Polyhydroxybutyrate; Polymer Sciences; Polymers; Polyvinyl alcohol; Soft and Granular Matter; Solvents; Temperature; Thermodynamic properties; Tissue engineering; Transistors; Japan; Polyaniline; Carbon black and plasticizer; Biopolymer composites; Poly(3-hydroxy butyrate); AC and DC electrical conductivity
• ISSN: 0170-0839; 1436-2449
• DOI: 10.1007/s00289-017-2118-8

Four composites of PHB, with varying amounts of PANI, carbon black (CB), and a tributyl
O
-acetylcitrate were prepared by solvent casting and then melted to form films by hydraulic hot press. The morphology, thermal properties, and electrical conductivity of PHB were studied by TEM, DSC, four-point probe, LCR bridge, FT-IR, and WAXD. The values of
ε
′ and
ε
″ had a higher values with the addition of PANI/CB compared to pure PHB. The conductivity increased from 10
−15
to 10
−6
S cm
−1
and increased with raised the temperature similar semiconductor. TEM showed good dispersion of PANI and CB and no agglomerations in the PHB matrix. The new PHB composites can be applied in the medical and electronics industries in the near future.