Volume 18, Issue 4 (December 2021)                   IJMSE 2021, 18(4): 1-9 | Back to browse issues page


XML Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Ahmadi S, Eftekhari Yekta B, Sarpoolaky H, Aghaei A. Physical and Structural Characteristics of Gel-derived Glasses Prepared via Different Drying Procedures. IJMSE. 2021; 18 (4) :1-9
URL: http://ijmse.iust.ac.ir/article-1-2297-en.html
Abstract:   (226 Views)
In the present work, monolithic gels were prepared through different drying procedures including
super critical, infrared wavelengths and traditional drying methods. Dense and transparent glasses
were obtained after controlled heat treatment of the dried porous xerogels in air atmosphere.
The chemical bonding as well as different properties of the prepared gels and the relevant glasses
were examined by means of Fourier transform infrared spectroscopy (FTIR), Brunauer-Emmitt-
Teller (BET) and UV-Vis spectrometer. Based on the obtained results, different drying conditions
affect the average pore size and the total pore volume of the studied gels. The mean pore size was
found to be 8.7 nm, 2.4 nm and 3.2 nm for super critical, IR radiation and slow drying in air
atmosphere, respectively. The glass network structure was significantly changed by heat treatment  temperature so that the B-O-Si bonds were formed only after 450 °C. It was found that the gel dried under super critical condition was unable to reach to its full density all over the selected sintering temperature interval.
 
Full-Text [PDF 1998 kb]   (101 Downloads)    
Type of Study: Research Paper | Subject: Ceramics

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


Rights and Permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2019 All Rights Reserved | Iranian Journal of Materials Science and Engineering

Designed & Developed by : Yektaweb