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Fabrication of Chitosan Particles Through a Coaxial Nozzle Under Pressurized Carbon Dioxide by Wahyu Diono; Anthony Susilo; Siti Machmudah; Hideki Kanda; Motonobu Goto is a Engineering article available to read on EtoBox.

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## Abstract The generation of chitosan particles through supercritical carbon dioxide (SCCO~2~) antisolvent process was studied. The experiments were carried out at temperatures of 60–100°C and pressures of 15–25 MPa with a 15 ml min^−1^ CO~2~ flow rate. As a feed solution, chitosan powder was dissolved in acetic acid:water:ethanol. Scanning electron microscopy (SEM) observations described that the precipitated chitosan products have irregular morphologies with the spherical, the spherical with fiber‐like, and the fiber‐like free‐spherical particles. Interestingly, hollow‐core chitosan particles generated when SCCO~2~ antisolvent treatments were performed at a temperature of 60°C and pressures of 20–25 MPa. The Fourier transform infrared spectroscopy (FT‐IR) spectra indicated that the structural properties of chitosan did not shift after the SCCO~2~ antisolvent treatment. The results exhibited that this SCCO~2~ antisolvent technique is likely to be fruitful for the generation of biopolymer particles with hollow‐core structures.

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Author

Wahyu Diono; Anthony Susilo; Siti Machmudah; Hideki Kanda; Motonobu Goto

Publisher

Wiley (John Wiley & Sons); Wiley-Blackwell; Wiley (ISSN 1932-2135)

Published

2020

Language

EN

Field

Engineering (Physical Sciences)