TY - JOUR
T1 - Preparation of SiO2-PVA nanocomposite and monolithic transparent silica glass by sintering
AU - Ikeda, Hiroshi
AU - Fujino, Shigeru
AU - Kajiwara, Toshihisa
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2011/1
Y1 - 2011/1
N2 - We present a procedure for fabricating transparent silica glass that involves the sintering of green bodies prepared from an inorganic-organic nanocomposite. The nanocomposite was prepared from fumed silica and poly(vinyl alcohol) (PVA). We investigated the SiO2-PVA nanocomposite by Fourier transform infrared spectrometry (FT-IR) measurement, transmission electron microscopy and electron energy-loss spectroscopy, and the results revealed homogeneously dispersed SiO2 nanoparticles and PVA. We examined the relationship between the pH and ζ potential of the SiO2 suspension and the formability of the SiO2-PVA nanocomposite. Formability of the SiO2-PVA nanocomposite was dependent on the pH of the SiO2 suspension, and a monolithic SiO2-PVA nanocomposite without cracks was obtained using a SiO2 suspension at around the isoelectric point (pI). By sintering the SiO2-PVA nanocomposite in air at 1100°C, monolithic transparent silica glass was obtained with no cracks. The glass is highly transparent from the ultraviolet to the visible region.
AB - We present a procedure for fabricating transparent silica glass that involves the sintering of green bodies prepared from an inorganic-organic nanocomposite. The nanocomposite was prepared from fumed silica and poly(vinyl alcohol) (PVA). We investigated the SiO2-PVA nanocomposite by Fourier transform infrared spectrometry (FT-IR) measurement, transmission electron microscopy and electron energy-loss spectroscopy, and the results revealed homogeneously dispersed SiO2 nanoparticles and PVA. We examined the relationship between the pH and ζ potential of the SiO2 suspension and the formability of the SiO2-PVA nanocomposite. Formability of the SiO2-PVA nanocomposite was dependent on the pH of the SiO2 suspension, and a monolithic SiO2-PVA nanocomposite without cracks was obtained using a SiO2 suspension at around the isoelectric point (pI). By sintering the SiO2-PVA nanocomposite in air at 1100°C, monolithic transparent silica glass was obtained with no cracks. The glass is highly transparent from the ultraviolet to the visible region.
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U2 - 10.2109/jcersj2.119.65
DO - 10.2109/jcersj2.119.65
M3 - Article
AN - SCOPUS:78651243405
SN - 1882-0743
VL - 119
SP - 65
EP - 69
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
IS - 1385
ER -