Rice Husk ash as Flatting Extender in Cellulose Matt Paint

Igwebike-Ossi; Clementina Dilim

doi:doi:10.11648/j.ajac.20140206.15

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Rice Husk ash as Flatting Extender in Cellulose Matt Paint

Igwebike-Ossi, Clementina Dilim

Published in American Journal of Applied Chemistry (Volume 2, Issue 6)

Received: 12 December 2014 Accepted: 23 December 2014 Published: 31 December 2014

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Abstract

The high silica content of rice husk ash (RHA) promotes its attractiveness as an abundant, cheap and renewable resource for various industrial applications such as surface coatings formulation. This study investigated the applicability of rice husk ash (RHA) as a flatting extender in cellulose matt paint and compared its flatting effect with those of two commercial extenders; fumed silica (the standard flatting agent) and silica flour. RHA was obtained by controlled incineration of rice husks at a temperature of 6500C and duration of 4hrs. The granular ash was then ground and sieved to obtain RHA flour with a particle size of ~32microns used in the formulation of the cellulose paints. Cellulose paint produced with fumed silica of 20μm-particle size was the reference standard while a sample produced with 0% extender served as the Control. The gloss values of the dry films of the paints were measured with a gloss meter at 200 angle of reflectance and their matt values calculated from their gloss values. The results showed that all three extenders substantially reduced the gloss levels of the cellulose paint samples with a resultant corresponding increase in their matt values. Although the flatting agents displayed varied degrees of flatting effect, their matt values were all over 100% higher than that of the Control. Fumed silica was highest in flatting performance, followed closely by RHA while silica flour ranked third. This trend was evident in the matt values (%) of 98.2±0.00, 94.7±0.06 and 86.9±0.11 obtained for cellulose matt paints produced with fumed silica, RHA and silica flour respectively. The Control had the lowest matt value of 42.9% showing its glossy nature due to the absence of a flatting agent.

Published in	American Journal of Applied Chemistry (Volume 2, Issue 6)
DOI	10.11648/j.ajac.20140206.15
Page(s)	122-127
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

Cellulose Matt Paint, Rice Husk Ash, Flatting Extender, Fumed Silica, Gloss

References

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APA Style

Igwebike-Ossi, Clementina Dilim. (2014). Rice Husk ash as Flatting Extender in Cellulose Matt Paint. American Journal of Applied Chemistry, 2(6), 122-127. https://doi.org/10.11648/j.ajac.20140206.15

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ACS Style

Igwebike-Ossi; Clementina Dilim. Rice Husk ash as Flatting Extender in Cellulose Matt Paint. Am. J. Appl. Chem. 2014, 2(6), 122-127. doi: 10.11648/j.ajac.20140206.15

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AMA Style

Igwebike-Ossi, Clementina Dilim. Rice Husk ash as Flatting Extender in Cellulose Matt Paint. Am J Appl Chem. 2014;2(6):122-127. doi: 10.11648/j.ajac.20140206.15

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@article{10.11648/j.ajac.20140206.15,
  author = {Igwebike-Ossi and Clementina Dilim},
  title = {Rice Husk ash as Flatting Extender in Cellulose Matt Paint},
  journal = {American Journal of Applied Chemistry},
  volume = {2},
  number = {6},
  pages = {122-127},
  doi = {10.11648/j.ajac.20140206.15},
  url = {https://doi.org/10.11648/j.ajac.20140206.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajac.20140206.15},
  abstract = {The high silica content of rice husk ash (RHA) promotes its attractiveness as an abundant, cheap and renewable resource for various industrial applications such as surface coatings formulation. This study investigated the applicability of rice husk ash (RHA) as a flatting extender in cellulose matt paint and compared its flatting effect with those of two commercial extenders; fumed silica (the standard flatting agent) and silica flour. RHA was obtained by controlled incineration of rice husks at a temperature of 6500C and duration of 4hrs. The granular ash was then ground and sieved to obtain RHA flour with a particle size of ~32microns used in the formulation of the cellulose paints. Cellulose paint produced with fumed silica of 20μm-particle size was the reference standard while a sample produced with 0% extender served as the Control. The gloss values of the dry films of the paints were measured with a gloss meter at 200 angle of reflectance and their matt values calculated from their gloss values. The results showed that all three extenders substantially reduced the gloss levels of the cellulose paint samples with a resultant corresponding increase in their matt values. Although the flatting agents displayed varied degrees of flatting effect, their matt values were all over 100% higher than that of the Control. Fumed silica was highest in flatting performance, followed closely by RHA while silica flour ranked third. This trend was evident in the matt values (%) of 98.2±0.00, 94.7±0.06 and 86.9±0.11 obtained for cellulose matt paints produced with fumed silica, RHA and silica flour respectively. The Control had the lowest matt value of 42.9% showing its glossy nature due to the absence of a flatting agent.},
 year = {2014}
}

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TY  - JOUR
T1  - Rice Husk ash as Flatting Extender in Cellulose Matt Paint
AU  - Igwebike-Ossi
AU  - Clementina Dilim
Y1  - 2014/12/31
PY  - 2014
N1  - https://doi.org/10.11648/j.ajac.20140206.15
DO  - 10.11648/j.ajac.20140206.15
T2  - American Journal of Applied Chemistry
JF  - American Journal of Applied Chemistry
JO  - American Journal of Applied Chemistry
SP  - 122
EP  - 127
PB  - Science Publishing Group
SN  - 2330-8745
UR  - https://doi.org/10.11648/j.ajac.20140206.15
AB  - The high silica content of rice husk ash (RHA) promotes its attractiveness as an abundant, cheap and renewable resource for various industrial applications such as surface coatings formulation. This study investigated the applicability of rice husk ash (RHA) as a flatting extender in cellulose matt paint and compared its flatting effect with those of two commercial extenders; fumed silica (the standard flatting agent) and silica flour. RHA was obtained by controlled incineration of rice husks at a temperature of 6500C and duration of 4hrs. The granular ash was then ground and sieved to obtain RHA flour with a particle size of ~32microns used in the formulation of the cellulose paints. Cellulose paint produced with fumed silica of 20μm-particle size was the reference standard while a sample produced with 0% extender served as the Control. The gloss values of the dry films of the paints were measured with a gloss meter at 200 angle of reflectance and their matt values calculated from their gloss values. The results showed that all three extenders substantially reduced the gloss levels of the cellulose paint samples with a resultant corresponding increase in their matt values. Although the flatting agents displayed varied degrees of flatting effect, their matt values were all over 100% higher than that of the Control. Fumed silica was highest in flatting performance, followed closely by RHA while silica flour ranked third. This trend was evident in the matt values (%) of 98.2±0.00, 94.7±0.06 and 86.9±0.11 obtained for cellulose matt paints produced with fumed silica, RHA and silica flour respectively. The Control had the lowest matt value of 42.9% showing its glossy nature due to the absence of a flatting agent.
VL  - 2
IS  - 6
ER  -

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Author Information

Igwebike-Ossi

Department of Industrial Chemistry, Ebonyi State University, P. M. B 053, Abakaliki, Nigeria
Clementina Dilim

Department of Industrial Chemistry, Ebonyi State University, P. M. B 053, Abakaliki, Nigeria

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APA Style

Igwebike-Ossi, Clementina Dilim. (2014). Rice Husk ash as Flatting Extender in Cellulose Matt Paint. American Journal of Applied Chemistry, 2(6), 122-127. https://doi.org/10.11648/j.ajac.20140206.15

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ACS Style

Igwebike-Ossi; Clementina Dilim. Rice Husk ash as Flatting Extender in Cellulose Matt Paint. Am. J. Appl. Chem. 2014, 2(6), 122-127. doi: 10.11648/j.ajac.20140206.15

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AMA Style

Igwebike-Ossi, Clementina Dilim. Rice Husk ash as Flatting Extender in Cellulose Matt Paint. Am J Appl Chem. 2014;2(6):122-127. doi: 10.11648/j.ajac.20140206.15

Copy | Download

@article{10.11648/j.ajac.20140206.15,
  author = {Igwebike-Ossi and Clementina Dilim},
  title = {Rice Husk ash as Flatting Extender in Cellulose Matt Paint},
  journal = {American Journal of Applied Chemistry},
  volume = {2},
  number = {6},
  pages = {122-127},
  doi = {10.11648/j.ajac.20140206.15},
  url = {https://doi.org/10.11648/j.ajac.20140206.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajac.20140206.15},
  abstract = {The high silica content of rice husk ash (RHA) promotes its attractiveness as an abundant, cheap and renewable resource for various industrial applications such as surface coatings formulation. This study investigated the applicability of rice husk ash (RHA) as a flatting extender in cellulose matt paint and compared its flatting effect with those of two commercial extenders; fumed silica (the standard flatting agent) and silica flour. RHA was obtained by controlled incineration of rice husks at a temperature of 6500C and duration of 4hrs. The granular ash was then ground and sieved to obtain RHA flour with a particle size of ~32microns used in the formulation of the cellulose paints. Cellulose paint produced with fumed silica of 20μm-particle size was the reference standard while a sample produced with 0% extender served as the Control. The gloss values of the dry films of the paints were measured with a gloss meter at 200 angle of reflectance and their matt values calculated from their gloss values. The results showed that all three extenders substantially reduced the gloss levels of the cellulose paint samples with a resultant corresponding increase in their matt values. Although the flatting agents displayed varied degrees of flatting effect, their matt values were all over 100% higher than that of the Control. Fumed silica was highest in flatting performance, followed closely by RHA while silica flour ranked third. This trend was evident in the matt values (%) of 98.2±0.00, 94.7±0.06 and 86.9±0.11 obtained for cellulose matt paints produced with fumed silica, RHA and silica flour respectively. The Control had the lowest matt value of 42.9% showing its glossy nature due to the absence of a flatting agent.},
 year = {2014}
}

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TY  - JOUR
T1  - Rice Husk ash as Flatting Extender in Cellulose Matt Paint
AU  - Igwebike-Ossi
AU  - Clementina Dilim
Y1  - 2014/12/31
PY  - 2014
N1  - https://doi.org/10.11648/j.ajac.20140206.15
DO  - 10.11648/j.ajac.20140206.15
T2  - American Journal of Applied Chemistry
JF  - American Journal of Applied Chemistry
JO  - American Journal of Applied Chemistry
SP  - 122
EP  - 127
PB  - Science Publishing Group
SN  - 2330-8745
UR  - https://doi.org/10.11648/j.ajac.20140206.15
AB  - The high silica content of rice husk ash (RHA) promotes its attractiveness as an abundant, cheap and renewable resource for various industrial applications such as surface coatings formulation. This study investigated the applicability of rice husk ash (RHA) as a flatting extender in cellulose matt paint and compared its flatting effect with those of two commercial extenders; fumed silica (the standard flatting agent) and silica flour. RHA was obtained by controlled incineration of rice husks at a temperature of 6500C and duration of 4hrs. The granular ash was then ground and sieved to obtain RHA flour with a particle size of ~32microns used in the formulation of the cellulose paints. Cellulose paint produced with fumed silica of 20μm-particle size was the reference standard while a sample produced with 0% extender served as the Control. The gloss values of the dry films of the paints were measured with a gloss meter at 200 angle of reflectance and their matt values calculated from their gloss values. The results showed that all three extenders substantially reduced the gloss levels of the cellulose paint samples with a resultant corresponding increase in their matt values. Although the flatting agents displayed varied degrees of flatting effect, their matt values were all over 100% higher than that of the Control. Fumed silica was highest in flatting performance, followed closely by RHA while silica flour ranked third. This trend was evident in the matt values (%) of 98.2±0.00, 94.7±0.06 and 86.9±0.11 obtained for cellulose matt paints produced with fumed silica, RHA and silica flour respectively. The Control had the lowest matt value of 42.9% showing its glossy nature due to the absence of a flatting agent.
VL  - 2
IS  - 6
ER  -

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