Evaluating the Optical Properties of Philippine Rice Hull Ash as a Potential Alternative to Calcium Carbonate Filler for Paints
Abstract
The exploration of silica-rich agricultural wastes can be attributed to the constant pursuit of adding sustainable materials in the coatings industry. Inarguably, rice hull ash or RHA is one of the most studied agricultural wastes due to its high silica content and has been the subject of numerous research investigations. Owing to it excellent properties, RHA is used as pozzolan in the construction industry, as a filler, additive, oil adsorbent, and suspending agent for porcelain enamels. This research study attempts to explore and evaluate the Philippine rice hull ash as potential alternative to calcium carbonate fillers in term of its optical properties. A series of processes and treatments, which include milling and firing, were used to yield a white RHA product resembling a calcium carbonate. The resulting RHA was characterized using analytical instruments and its optical properties were obtained using a colorimeter for comparison with the commercially available calcium carbonate fillers. The optical properties of the processed RHA used in this study generated a brightness level, L*, that is within and is higher than the brightness level of the calcium carbonate populated in this study. Hence, in terms of optical properties, RHA can be processed to be used as an alternative mineral filler to paints. However, this research is delimited by the chemical and functional characteristics of the rice hull ash when blended and formulated with a paint or coating. A separate study must be undertaken to evaluate the viability of rice hull ash as extender to paints.
Keywords
Alternative Filler, Optical Properties, Paint Fillers, Rice Hull Ash
Citations
IRE Journals:
John Khervin M. Pacho , Dr. Noel Florencondia , Jeric R. Aduna
"Evaluating the Optical Properties of Philippine Rice Hull Ash as a Potential Alternative to Calcium Carbonate Filler for Paints" Iconic Research And Engineering Journals Volume 7 Issue 11 2024 Page 477-483
IEEE:
John Khervin M. Pacho , Dr. Noel Florencondia , Jeric R. Aduna
"Evaluating the Optical Properties of Philippine Rice Hull Ash as a Potential Alternative to Calcium Carbonate Filler for Paints" Iconic Research And Engineering Journals, 7(11)
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IRE Journals is an open access online journals established with an aim to publish high quality of research work in various diciplines. We have more than 6 years in publications. Over 2500+ papers already published.
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