A comparative study of production of glass microspheres by using thermal process

May Yan Lee, Jully Tan, Jerry Y.Y. Heng, Christopher Cheeseman

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

10 Citations (Scopus)


Microspheres are spherical particles that can be distinguished into two categories; solid or hollow. Microspheres typical ranges from 1 to 200 μm in diameter. Microsphere are made from glass, ceramic, carbon or plastic depending on applications. Solid glass microsphere is manufactured by direct burning of glass powders while hollow glass microspheres is produced by adding blowing agent to glass powder. This paper presented the production of glass microspheres by using the vertical thermal flame (VTF) process. Pre-treated soda lime glass powder with particle sized range from 90 to 125μm was used in this work. The results showed that glass microspheres produced by two passes through the flame have a more spherical shape as compared with the single pass. Under the Scanning Electron Microscope (SEM), it is observed that there is a morphology changed from uneven surface of glass powders to smooth spherical surface particles. Qualitative analysis for density of the pre-burned and burned particles was performed. Burned particles floats in water while pre-burned particles sank indicated the change of density of the particles. Further improvements of the VTF process in terms of the VTF set-up are required to increase the transformation of glass powders to glass microspheres.

Original languageEnglish
Title of host publication2017 2nd International Conference on Materials Engineering and Nanotechnology, ICMEN 2017
PublisherIOP Publishing
Publication statusPublished - 2017
Externally publishedYes
EventInternational Conference on Materials Engineering and Nanotechnology 2017 - Kuala Lumpur, Malaysia
Duration: 12 May 201714 May 2017
Conference number: 2nd
https://iopscience.iop.org/issue/1757-899X/205/1 (Proceedings)

Publication series

NameIOP Conference Series: Materials Science and Engineering
PublisherIOP Publishing
ISSN (Print)1757-8981


ConferenceInternational Conference on Materials Engineering and Nanotechnology 2017
Abbreviated titleICMEN 2017
CityKuala Lumpur
Internet address

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