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Pattarasuda Viensiri. The Formulation of geopolymer spray for antifungal coating. Master's Degree(Materials Science). Mae Fah Luang University. Learning Resources and Educational Media Center. : Mae Fah Luang University, 2022.
The Formulation of geopolymer spray for antifungal coating
Formulation of geopolymer spray for antifungal coating
Name: Pattarasuda Viensiri
keyword:
Geopolymer
MeSH:
Inorganic polymers
-- 301369
Classification :.DDC: e-Theses
;
Coating
MeSH:
Coating processes
-- 57103
MeSH:
Antifungal agents
-- 301370
LCSH:
Inorganic polymers
-- 301369
LCSH:
Coating processes
-- 57103
LCSH:
Antifungal agents
-- 301370
Abstract:
Geopolymer is a potential material that can be used in protective coating applications; they are inorganic materials with a tri-dimensional aluminosilicate structure that can potentially be applied to concrete surface protection. This research aims to study the antifungal activity of metakaolin-based geopolymer mixed with zinc oxide nanoparticles (ZnO NPs) coated on cement mortar substrates. The experiments were divided into 2 parts, which are the formulation of geopolymer for spray coating (Part I) and testing of antifungal activity of the coatings (Part II).
In part I, the formulation of geopolymer spray slurry was studied by varying the Si/Al molar ratio from 1.0-2.0 while the Na/Al was fixed at 1.0. Viscosity of geopolymer slurries with Si/Al molar ratios of 1.5, 1.6 and 1.7 were found to be suitable for spraying. After coating on the substrates, the geopolymer slurry with Si/Al of 1.7 had the least cracking, so it was selected. The structure of the geopolymer was amorphous phase as analyzed using an X-ray diffraction. The coating could be achieved up to 34 layers, being ~60-80 µm. The alkaline leaching was found to be ~305 ppm with a pH value of 9.79 pH at 28 days. The adhesion strength showed the highest value of 0.90 MPa in the based geopolymer (ZnO NPs-free). Addition ZnO NPs at 0.025%, 0.050% and 0.075% to this geopolymer resulted in a decrease of the adhesion strength to 0.65 MPa, 0.60 MPa and 0.55 MPa, respectively.
For the antifungal activity testing in part II, the fungus collected from concrete construction were identified to the genus Cladosporium and Trichoderma. The antifungal activity was carried out on geopolymer coated on the cement substrate, and an accelerated test to study the fungal biodeterioration of cement with simulation in the incubated box was set for 28 days. Results showed the antifungal activity on the Cladosporium of the geopolymer with ZnO NPs was more effective than the ZnO NPs-free specimen. The dosage at 0.075% had the best antifungal activity. The condition of specimens exposed under UV light was more effective than under darkness. On the other hand, the experiment of antifungal activity on Trichoderma was not succeed, the mycelium was not grown from the beginning. This might be because of amount of nutrient were not enough for Trichoderma growth.
Mae Fah Luang University. Learning Resources and Educational Media Center
Address:
CHIANG RAI
Email:
library@mfu.ac.th
Name: Darunee Wattanasiriwech
Role:
Advisor
Created:
2022
Modified:
2023-04-28
Issued:
2023-04-28
วิทยานิพนธ์/Thesis
application/pdf
CallNumber:
e-Theses
eng
DegreeName: Master of Science
Level: Master's Degree
Descipline: Materials Science
Grantor: Mae Fah Luang University
©copyrights Mae Fah Luang University
RightsAccess:
ใช้เวลา
0.032978 วินาที
Pattarasuda Viensiri
| Title | Contributor | Type |
|---|---|---|
| The Formulation of geopolymer spray for antifungal coating
มหาวิทยาลัยแม่ฟ้าหลวง Pattarasuda Viensiri | Darunee Wattanasiriwech | วิทยานิพนธ์/Thesis |
Darunee Wattanasiriwech
| Title | Creator | Type and Date Create |
|---|---|---|
| Synthesis of Nano-Perovskite catalysts for catalytic converter
มหาวิทยาลัยเชียงใหม่ Darunee Wattanasiriwech;Thapanee Sarakonsri;Apinon Nuntiya;Torranin Chairuangsri;Sukanda Jiansirisomboon | Supachai Sompech | วิทยานิพนธ์/Thesis |
| Preparation of 8YSZ electrolyte film on Nio-8YSZ substrate using and electrophoretic deposition process
มหาวิทยาลัยแม่ฟ้าหลวง Assoc. Prof. Dr. Darunee Wattanasiriwech;Asst. Prof. Dr. Suthee Wattanasiriwech;Dr. Pavadee Aungkavattana | Malinee Meepho | วิทยานิพนธ์/Thesis |
| Factors affecting physical properties and compressive strength of fly ash-based geopolymer
มหาวิทยาลัยแม่ฟ้าหลวง Asst. Prof. Suthee Wattanasiriwech, Ph. D.;Assoc. Prof. Darunee Wattanasiriwech, Ph. D. | Cheng, Hongsheng | วิทยานิพนธ์/Thesis |
| Class c fly ash based geopolymer-mullite-cordierite composites
มหาวิทยาลัยแม่ฟ้าหลวง Asst. Prof. Suthee Wattanasiriwech, Ph. D.;Assoc. Prof. Darunee Wattanasiriwech, Ph. D. | Nurgesang, Faisal Arif | วิทยานิพนธ์/Thesis |
| Physical and mechanical properties of geopolymer-crumb rubber composite
มหาวิทยาลัยแม่ฟ้าหลวง Suthee Wattanasiriwech;Darunee Wattanasiriwech;Pavadee Aungkavattana | Krissanapat Yomthong | วิทยานิพนธ์/Thesis |
| The Use of flu ash from Laos, Thailand and Taiwan for geopolymer paste and geopolymer foam preparation
มหาวิทยาลัยแม่ฟ้าหลวง Darunee Wattanasiriwech;Suthee Wattanasiriwech | Viengsai Phavongkham | วิทยานิพนธ์/Thesis |
| The Formulation of geopolymer spray for antifungal coating
มหาวิทยาลัยแม่ฟ้าหลวง Darunee Wattanasiriwech | Pattarasuda Viensiri | วิทยานิพนธ์/Thesis |