Malaysian Journal of Analytical Sciences Vol 22 No 2 (2018): 311 - 317

MORPHOLOGY AND CHEMICAL STRUCTURE OF Sn(Oct)₂THIN LAYER ADDED BINDER VIA SOL GEL METHOD

(Morfologi dan Struktur Kimia bagi Lapisan Nipis Sn(Oct)₂ditambah Bahan Pengikat Melalui Kaedah Sol Gel)

Rafizah Zaiton*, Nor Afifah Omar, Norliza Ibrahim

Faculty of Chemical Engineering,

Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia

*Corresponding author: rafizah_fiezah@yahoo.com

Received: 15 February 2017; Accepted: 2 January 2018

Abstract

This paper contains a selection of parameters in sol gel synthesis to produce thin layer tin octoate, Sn(Oct)₂. The main purpose is to discuss the effect of binder on morphology and chemical structure in order to produce high quality coating. The sol-gel method gives better control of the texture, composition homogeneity and structural properties of the final product. However, the disadvantages of this process is the formation of cracks during drying of gels. Binder is one of the compounds help to prevent cracking. In this research, Sn(Oct)₂was synthesized through sol-gel method with the addition of binders which are polyvinyl alcohol (PVA) and polyethylene glycol (PEG) to enhance mechanical strength of sol gel coating on glass substrate. Different concentration of binder were varied to produce Sn(Oct)₂thin film. The paper first describes the effect of binder on spectral characteristic from chemical bonding. Then, the effect of binders toward membrane features also studied. The characteristic of thin layer with binders were also discussed. FTIR characterization used to determine the chemical compound and crystalline structure was confirmed by XRD analysis. It has been shown that, added binder into the solution is an effective method to improve the strength of thin layer.

Keywords: sol gel, binder, thin layer, polyvinyl alcohol, polyethylene glycol

Abstrak

Kertas ini membincangkan pilihan parameter dalam sintesis sol gel untuk menghasilkan lapisan nipis bagi Sn (Oct)₂. Tujuan utama adalah untuk membincangkan kesan pengikat ke atas morfologi dan struktur kimia bagi menghasilkan salutan berkualiti tinggi. Kaedah sol-gel memberikan kawalan yang lebih baik terhadap tekstur,homogeniti komposisi dan struktur produk. Walau bagaimanapun, kelemahan proses ini adalah pembentukan keretakan semasa pengeringan gel. Bahan pengikat adalah salah satu daripada sebatian yang dapat membantu mencegah keretakan. Dalam penyelidikan ini, Sn (Oct)₂ telah disintesis melalui kaedah sol-gel dengan penambahan pengikat seperti polivinil alkohol (PVA) dan polietilena glikol (PEG) untuk meningkatkan kekuatan mekanik salutan sol gel pada substrat kaca. Kepekatan yang berbeza dari pengikat diubah untuk menghasilkan Sn(Oct)₂ lapisan nipis. Kajian ini adalah yang pertama menerangkan kesan pengikat pada ciri spektral dari ikatan kimia. Kemudian kajian itu menerangkan kesan pengikat ke atas ciri-ciri membran. Ciri-ciri lapisan nipis dengan pengikat juga dibincangkan. Analisis FTIR digunakan untuk menentukan sebatian kimia dan struktur kristal telah disahkan oleh analisis XRD. Telah ditunjukkan bahawa, penambahan pengikat ke dalam sebatian adalah kaedah penyelesaian yang berkesan untuk menambahbaik lapisan nipis.

Kata kunci: sol gel, pengikat, lapisan nipis, polivinil alkohol, polietilena glikol

References

1. Batt, J. M. and Stewardship, D. P. (2004). The world of organotin chemicals: applications, substitutes, and the environment. ATOFINA Chemicals, Inc, 6.

2. Casas, A., Ramos, M. J., Rodríguez, J. F. and Pérez, Á. (2013). Tin compounds as Lewis acid catalysts for esterification and transesterification of acid vegetable oils. Fuel Processing Technology, 106: 321-325.

3. Molero, C., de Lucas, A. and Rodriguez, J. F. (2009). Activities of octoate salts as novel catalysts for the transesterification of flexible polyurethane foams with diethylene glycol. Polymer Degradation and Stability, 94(4): 533-539.

4. Sobczak, M. (2012). Ring opening polymerization of cyclic esters in the presence of choline/SnOct₂ catalytic system. Journal of the Polymer Bulletin, 68: 2219-2228.

5. Wheaton, C. A. and Hayes, P. G. (2011). Designing cationic zinc and magnesium catalyst for coordination-insertion polymerization of lactide. Comments on Inorganic Chemistry, 32: 127-162.

6. Torres, T. and Bottari, G. (2013). Organic nanomaterials: synthesis, characterization, and device applications. John Wiley & Sons.

7. Znaidi, L., Touam, T., Vrel, D., Souded, N., Ben Yahia, S., Brinza, O., and Boudrioua, A. (2012). ZnO thin films synthesized by sol-gel process for photonic applications. Acta Physica Polonica-Series A General Physics, 121(1): 165-168.

8. Wright, J. D. and Sommerdijk, N. A. (2014). Sol-gel materials: chemistry and applications. CRC press.

9. Binders for Ceramic Bodies. (2008). Digitalfire Reference Database: http://digitalfire.com/4sight/ education/ binders_for_ceramic_bodies_345.html [Access online July 15, 2014].

10. Carter, C. B. and Norton, M. G. (2007). Ceramic materials: science and engineering. Springer Science & Business Media.

11. Ceramic Materials Analysis. (2014). Anderson Materials Evaluation, Inc.: http://www.anderson materials.com/ceramics.html [Acess online Retrieved July 1, 2014].

12. Attia, G. and El-Kader, M. A. (2013). Structural, optical and thermal characterization of PVA/2HEC polyblend films. International Journal of Electrochemical Sciences, 8: 5672-5687.

13. Nabiyouni, G., Barati, A. and Saadat, M. (2011). Surface adsorption of polyethylene glycol and polyvinyl alcohol with variable molecular weights on zinc oxide nanoparticles. Iranian Journal of Chemical Engineering, 8(1): 20-30.

14. Liu, Y. C., Lu, Y. F., Zeng, Y. Z., Liao, C. H., Chung, J. C. and Wei, T. Y. (2011). Nanostructured mesoporous titanium dioxide thin film prepared by sol-gel method for dye-sensitized solar cell. International Journal of Photoenergy, 2011: 1-9.

15. Ahmad, A. L., Jaya, M. A. T. and Chieh, D. C. J. (2011). Effect of binder concentration on titania sol turbidity and palladium-titania membrane. Journal of Materials Science and Engineering, 5(5): 534-540.