Synthesis and Characterization of Melamine Formaldehyde Resins for Decorative Paper Applications |
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| Authors: | S Ullah M A Bustam F Ahmad M Nadeem M Y Naz M Sagir A M Shariff |
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| Institution: | 1. Research Center for CO2Capture, Department of Chemical Engineering, Universiti Teknologi PETRONAS, 31750 Tronoh, Perak, Malaysia, Tel: +605‐368 7610;2. Fax: +605‐365 6176 (S. Ullah), Tel: +605‐368 7570;3. Fax: +605‐365 6176 (A.?M. Shariff);4. Department of Mechanical Engineering, Universiti Teknologi PETRONAS, 31750 Tronoh, Perak, Malaysia;5. Petroleum Development Oman LCC, 100 Sultanate of Oman‐Muscat;6. Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 31750 Tronoh, Perak, Malaysia;7. Department of Chemical Engineering, Universiti Teknologi PETRONAS, 31750 Tronoh, Perak, Malaysia |
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| Abstract: | Melamine‐formaldehyde (MF) resins of improved environmental compatibility were synthesized at different molar ratios, temperature and pH. Five molar ratios of melamine and formaldehyde: 35:65, 36.5:63.5, 38.3:61.7, 41.1:58.9 and 42.4:58.6 were used to synthesize the corresponding resins. The prepared samples were characterized by using molecular weight determination viscometery, field emission scanning electron microscopy and thermogravimetric analysis. It was noticed that the solid content in the resin increases with an increase in pH. The maximum percentage of the solid content (51 %) was obtained for pH of 8.5 and temperature range of 95–98 oC. The refractive index of the final product was found increasing with an increase of melamine concentration in the resin. A similar trend was noticed in molecular weight of the resins with an increase in monomer yield. The maximum molecular weight of 114218 was obtained from the sample synthesized with MF molar ratio of 42.4:58.6. |
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| Keywords: | Melamine‐formaldehyde resin TGA Molecular weight Decorative paper |
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