Improvement of Kaolin Based Geopolymer Coated Wood Substrates for Use in NaOH Molarity

Abstract:

Geopolymer system which has high demand, especially among carbon conscious end users resulted in various research works on suitable mix designs of geopolymeric materials. There are certain factors that influence the properties of geopolymers such as composition, type and relative amount of alkali activator, NaOH concentration, specific surface composition of source materials, and condition during the initial period of the geopolymerization process. Focus of our work is on the degree of influence NaOH concentration has towards mechanical and bonding properties of kaolin geopolymer coated lumber wood. Other crucial parameters were kept constant at optimum that was deduced based on our earlier findings. The final idea is to create kaolin based coating material that is compatible with wood substrates which leads to a novel finding. To best of our knowledge, no researchers had attempted to do similar work before. Kaolin geopolymer coated lumber wood was prepared with varying NaOH concentration ranging from 2M to 14M. These pepared samples were tested after 7, 28 and 90 days to also analyse the changes in properties of kaolin geopolymer coated lumber wood over time. Samples were then subjected to mechanical and bonding testings such as flexural, adhesive, and water absorption as well. Morphological studies such as scanning electron microscopy were also performed to further evident findings from all testings.

• Periodical: Materials Science Forum (Volume 967)
• Pages: 241-249
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.967.241
• Online since: August 2019
• Authors: Ramasamy Shamala*, Mohd Mustafa Al Bakri Abdullah, Hussin Kamarudin, Huang Yue, Wang Jin
• Keywords: Bonding Study, Coating, Geopolymer, Kaolin, Mechanical Properties, Morphology, NaOH Molarity

References

[1] Wang, Li and Yan (2005). Synthesis and mechanical properties of metakaolinite-based geopolymer. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 268(1-3), 1-6.

DOI: 10.1016/j.colsurfa.2005.01.016

[2] Yip, Lukey and Van Deventer (2005). The coexistence of geopolymeric gel and calcium silicate hydrate at the early stage of alkaline activation. Cement and concrete research, 35(9), 1688-1697.

DOI: 10.1016/j.cemconres.2004.10.042

[3] Davidovits J. (1999). Chemistry and Geopolymeric Systems Terminology. Proceedings, Geopolymer 99.

[4] Davidovits J. (1999). Chemistry of geopolymeric systems. Terminology. Geopolymer 99 Proceedings. Second International Conference, 9-39. France: Institut Geopolymere.

[5] Xu and Van Deventer (2002). Geopolymerization of multiple minerals. Mineral Engineering, 15, 1131.

[6] Zuhua, Xiao, Huajun and Yue (2009). Role of water in the synthesis of calcined kaolin based geopolymer. Applied Clay Science, 43, 218-223.

DOI: 10.1016/j.clay.2008.09.003

[7] Rovnanik (2010).Effect of curing temperature on the development of hard structure of metakaolin-based geopolymer. Construction and Building Materials, 24, 1176-1183.

DOI: 10.1016/j.conbuildmat.2009.12.023

[8] Zhang, Wei and Li (2009). Preparation and microstructure of K-PSDS geopolymeric binder. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 302, 473-482. Rattanasak and Chindaprasirt (2009). Influence of NaOH solution on the synthesis of fly ash geopolymer. Minerals Engineering, 22(12), 1073-1078.

DOI: 10.1016/j.mineng.2009.03.022

[9] Duxson, Lukey and Van Deventer (2007). Physical evolution of Na-geopolymer derived from metakaolin up to 1000°C.Journal of Materials Science, 42,3044-3054.

DOI: 10.1007/s10853-006-0535-4

[10] Tempest, Sanusi, Gergely, Ogunro and Weggel (2009). Compressive strength and embodied energy optimization of fly ash based geopolymer concrete. Paper presented at the 2009 World of Coal Ash (WOCA).

DOI: 10.1061/41165(397)135

[11] Sami Ullah, Faiz Ahmad, A.M Shariff and M.A. Bustam (2014). Synergistic effects of kaolin clay on intumescent fire retardant coating composition for fire protection of structural steel substrate.

DOI: 10.1016/j.polymdegradstab.2014.08.017

[12] Fernandez-Jimenez and Palomo (2007). Factor affecting early compressive strength of alkali activated fly ash (OPC-free) concrete. Materials de Construction, 57, 7-22.

DOI: 10.3989/mc.2007.v57.i287.53

[13] Provis, Yong, Duxson and Van Deventer (2009). Correlating mechanical and thermal properties of sodium silicate-fly ash geopolymers. Colloids and surfaces A: Physicochemical and Engineering Aspects, 336(1-3), 57-63.

DOI: 10.1016/j.colsurfa.2008.11.019

[14] Xiao, Zuhua, Huajun and Yue (2009). Geopolymerization process of alkali-metakaolinite characterized by isothermal calometry. Thermochimica Acta, 493, 49-54.

DOI: 10.1016/j.tca.2009.04.002

[15] Lee and Van Deventer (2002). The effects of inorganic salt contamination on the strength and durability of geopolymers. Colloids and Surfaces, 211,115-126.

DOI: 10.1016/s0927-7757(02)00239-x

[16] Chindaprasirt, Chareerat and Sirivivatnanon (2007). Workability and strength of coarse high calicium fly ash geopolymer. Cement and concrete composites, 29(3), 224-229.

DOI: 10.1016/j.cemconcomp.2006.11.002

[17] Hardjito and Rangan (2005). Development and properties of low-calcium fly ash based geopolymer concrete.Research report GCI. Faculty of Engineering Curtin University of Technology, Perth, Australia.

[18] Alonso and Palomo (2001). Alkaline activation of metakaolin and calcium hydroxide mixtures: Influence of temperature, activator concerntration and solids ratio, Materials Letters, 47(1-2), 55-62.

DOI: 10.1016/s0167-577x(00)00212-3

[19] Hardjito D., Cheak C. C., Lee I. C. H. (2008). Strength and Setting Time of Low Calcium Fly Ash-based Geopolymer Mortar. Modern Applied Science, 3-11.

DOI: 10.5539/mas.v2n4p3

[20] He Y., Cui X. M., Liu X. D., Wang Y. P., Zhang J., Liu K. (2013). Preparation of self-supporting NaA zeolite membranes. Journal Membrane Science, 66-72.

DOI: 10.1016/j.memsci.2013.07.027

[21] Heah C. Y., Kamarudin H., Mustafa Al Bakri A. M., Binhussain M., Luqman M., Khairul Nizar I., Liew Y. M. (2012a). Effect of alkali concentration on mechanical properties of kaolin geopolymer. Romanian Journal of Materials, 42 (2), 179-186.

DOI: 10.4028/www.scientific.net/amr.548.42

[22] Temuujin J., Minjigmaa A., Rickard W., Lee M., Van Riessen A. (2011). Preparation and Thermal Properties of Fire Resistant Metakaolin-based Geopolymer-Type Coatings. Journal of Non-Crystalline Solids, 1399-1404.

DOI: 10.1016/j.jnoncrysol.2010.09.063

[23] Temuujin J., Minjigmaa A., Rickard W., Lee M., Williams I., Van Riessen A. (2009). Preparation of Metakaolin Based Geopolymer Coatings on Metal Substrates as Thermal Barriers. Applied Clay Science, 265-270.

DOI: 10.1016/j.clay.2009.08.015

[24] Temuujin, J., Minjigmaa, A. Rickard W., Lee M., Williams I., Van Riessen A. (2010). Fly Ash Based. Journal of Hazardous Materials, 748-752.

DOI: 10.1016/j.jhazmat.2010.04.121

[25] Xu H., Van Deventer J. S. J. (2000). The geopolymerization of alumino- silicate minerals. International Journal of Mineral Processing, 247–266.

DOI: 10.1016/s0301-7516(99)00074-5

[26] Xu H., Van Deventer J. S. J., Lukey G. C. (2001). Effect of Alkali Metals on the Preferential Geopolymerization of Stilbite/Kaolinite Mixtures. Department of Chemical Engineering, 3749-3756.

DOI: 10.1021/ie010042b

[27] Zhang Jin, He Yan, Wang Yi-ping, Mao Jin, Cui Xue-min (2014). Synthesis of a self-supporting faujasite zeolite membrane using geopolymer gel for separation ofalcohol/water mixture. Materials Letters, 167-170.

DOI: 10.1016/j.matlet.2013.11.008

[28] Zhang, Zhe-tao, Kai-tuo, Wang, Mo, Bing-hui, Li, Xin-feng, Cui, Xue-min (2015). Preparation and characterization of a reflective and heat insulative coating based ongeopolymers. Energy Building, 220-225.

DOI: 10.1016/j.enbuild.2014.11.028

[29] Ziyang Hu, Jianjun Zhang, Shaozhen Xiong, Ying Zhao (2012). Performance of polymer solar cells fabricated by dip coating process. Solar Energy Materials and Solar Cells, 221-225.

DOI: 10.1016/j.solmat.2011.12.002

[30] Zuhua Zhang, Xiao Yao, Huajun Zhu (2010a). Potential application of geopolymers as protection coatings for marine concrete: I. Basic properties. Applied Clay Science, 1-6.

DOI: 10.1016/j.clay.2010.01.014

[31] Rachna Jain, Manish Wasnik, Amit Sharma, Manish Kr Bhadu, Rout T. K., Khanna A. S. (2014). Development of Epoxy Based Surface Tolerant Coating Improvised with Zn Dust and MIO on Steel Surfaces. Journal of Coatings, 1-15.

DOI: 10.1155/2014/574028

[32] Rangan B. V. (2008). Fly Ash Based Geopolymer Concrete. Perth: Research Report GC 4.

[33] Riccardi C. C., Adabbo H. E., Williams R. J. J. (1984). Journal Applied Polymer Science, 2481-2492.

[34] Provis J. L., Van Deventer J. S. J. (2009). Geopolymers Structure, processing, properties and industrial applications. Woodhead Publishing.

[35] Palomo A., Blanco M., Granizo M., Puertas F., Vazquez T., Grutzeck M. (1999). Chemical Stability of Cementitious Materials Based on Metakaolin. Cement and Concrete Research, 997-1004.

DOI: 10.1016/s0008-8846(99)00074-5

[36] Palomo A., Grutzeck M. W. (1999). Alkali-activated fly ashes: A cement for the future. Cement and Concrete Research, 29, 1323-1329.

DOI: 10.1016/s0008-8846(98)00243-9

[37] Mohd Mustafa Al Bakri, A. M., Liyana J., Kamarudin H., Mohammad H., Ruzaidi C. M. G., Izzat A., (2013). Study on Fly Ash Based Geopolymer for Coating Applications. Advance Materials Research, 227-233.

DOI: 10.4028/www.scientific.net/amr.686.227

[38] Murray H. (2000). Applied Clay Mineralogy. Occurrences, Processing and Application of Kaolins, Bentonites, Palygorskite-Sepiolite, and Common Clays. United States: Ullmann's Encyclopedia of Industrial Chemistry. 2, 1–6.

DOI: 10.1016/s1572-4352(06)02001-0

[39] Mustafa Al Bakri A.M., Kamarudin H., Bnhussain M., Khairul Nizar I., Mastura W. I. W. (2011). Mechanism and Chemical Reaction of Fly Ash Geopolymer Cement- A Review. Journal of Asian Scientific Research, 247-253.

DOI: 10.4028/www.scientific.net/amr.626.937