relation: https://khub.utp.edu.my/scholars/6383/ title: Synthesis and characterization of melamine formaldehyde resins for decorative paper applications creator: Ullah, S. creator: Bustam, M.A. creator: Ahmad, F. creator: Nadeem, M. creator: Naz, M.Y. creator: Sagir, M. creator: Shariff, A.M. description: 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 °C. 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. © 2015 The Chemical Society Located in Taipei & Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. publisher: Chinese Chemical Society Taiwan date: 2015 type: Article type: PeerReviewed identifier: Ullah, S. and Bustam, M.A. and Ahmad, F. and Nadeem, M. and Naz, M.Y. and Sagir, M. and Shariff, A.M. (2015) Synthesis and characterization of melamine formaldehyde resins for decorative paper applications. Journal of the Chinese Chemical Society, 62 (2). pp. 182-190. ISSN 00094536 relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923361360&doi=10.1002%2fjccs.201400226&partnerID=40&md5=7d65a8d5d1584e39360edb223a562ddf relation: 10.1002/jccs.201400226 identifier: 10.1002/jccs.201400226