TY - GEN
T1 - Injection of silver nano-particles in cotton fibers by using supercritical carbon dioxide
AU - Iwai, Yoshio
AU - Sameshima, Sho
AU - Yonezawa, Setsuko
AU - Katayama, Shigeo
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/9/8
Y1 - 2015/9/8
N2 - Silver nano-particles were injected in cotton fibers by using supercritical carbon dioxide to modify cotton fibers. The cavities in cotton fibers were expanded to inject silver nano-particles. The cotton fibers were treated as follows. The cotton fibers were immersed in sodium hydroxide aqueous solution, and were dried. Then, sodium hydroxide remained in the cotton fibers was cleared by washing. Many cavities in about 500 nm diameter were observed in the cross sections of the cotton fibers by scanning electron microscopy. The cotton fibers treated by sodium hydroxide aqueous solution were immersed in 30 ppm silver nano-particle aqueous solution, and the solution was pressurized for 1 h by carbon dioxide at 80 °C and 20 MPa. Transmission electron microscopy revealed a lot of silver nano-particles in 10 to 30 nm diameter existed in the cross sections of the cotton fibers. The cotton fibers in which silver nano-particles were injected were washed for 3 h by a magnetic stirrer. The number densities of silver nano-particles in the cotton fibers were almost the same before and after the washing. An antibacterial test was carried out for the cotton fibers in which silver nano-particles were injected. The antibacterial performance of the cotton fibers was remained after it was washed for 6 h.
AB - Silver nano-particles were injected in cotton fibers by using supercritical carbon dioxide to modify cotton fibers. The cavities in cotton fibers were expanded to inject silver nano-particles. The cotton fibers were treated as follows. The cotton fibers were immersed in sodium hydroxide aqueous solution, and were dried. Then, sodium hydroxide remained in the cotton fibers was cleared by washing. Many cavities in about 500 nm diameter were observed in the cross sections of the cotton fibers by scanning electron microscopy. The cotton fibers treated by sodium hydroxide aqueous solution were immersed in 30 ppm silver nano-particle aqueous solution, and the solution was pressurized for 1 h by carbon dioxide at 80 °C and 20 MPa. Transmission electron microscopy revealed a lot of silver nano-particles in 10 to 30 nm diameter existed in the cross sections of the cotton fibers. The cotton fibers in which silver nano-particles were injected were washed for 3 h by a magnetic stirrer. The number densities of silver nano-particles in the cotton fibers were almost the same before and after the washing. An antibacterial test was carried out for the cotton fibers in which silver nano-particles were injected. The antibacterial performance of the cotton fibers was remained after it was washed for 6 h.
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U2 - 10.1109/ASCC.2015.7244401
DO - 10.1109/ASCC.2015.7244401
M3 - Conference contribution
AN - SCOPUS:84957618136
T3 - 2015 10th Asian Control Conference: Emerging Control Techniques for a Sustainable World, ASCC 2015
BT - 2015 10th Asian Control Conference
A2 - Selamat, Hazlina
A2 - Ramli, Hafiz Rashidi Haruna
A2 - Faudzi, Ahmad Athif Mohd
A2 - Rahman, Ribhan Zafira Abdul
A2 - Ishak, Asnor Juraiza
A2 - Soh, Azura Che
A2 - Ahmad, Siti Anom
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th Asian Control Conference, ASCC 2015
Y2 - 31 May 2015 through 3 June 2015
ER -