PREPARATION OF POLY(METHYL METHACRYLATE)/CLAY NANOCOMPOSITES AND INVESTIGATION OF SOME PHYSICAL PROPERTIES

Yıl 2014, Cilt: 32 Sayı: 1, 71 - 80, 01.03.2014

Adnan Kurt Zeynep Çağlayan Hatice Sultan Bektaş

Öz

In the present study, the synthesis, characterization, thermal and optical properties of poly(methyl methacrylate)(PMMA)/organomodified montmorillonit clay (OMTAB) nanocomposites were investigated. PMMA/nanoclay composites were synthesized by in situ polymerization method. Organomodified montmorillonit clay and PMMA/OMTAB nanocomposites were characterized by FTIR technique. The interlayer spacing of the organoclay platelets and the polymer clay nanocomposites were determined by X-ray diffraction spectroscopy. It was determined that the clay dispersion in the polymer matrix was exfoliated behavior. Thermal behaviors and thermal degradation activation energies of nanocomposites were determined by thermogravimetric analysis method (TGA). Polymer/nanocomposite thin films on the quartz surface were prepared by spin coating technique. The optical properties were obtained by measuring transmittance values in a UV-VIS spectrophotometer.

Anahtar Kelimeler

Polymer/clay nanocomposites, exfoliation/intercalation, thermal degradation kinetics, optical properties.

Kaynakça

• [1] Park J.H., Jana S.C., “The relationship between nano- and micro-structures and mechanical properties in PMMA-epoxy-nanoclay composites”, Polymer, 44, 2091-2100, 2003.
• [2] Powell C.E., Beall G.W., “Physical properties of polymer/clay nanocomposites”, Solid State and Materials Science 10, 73–80, 2006.
• [3] Utracki L.A., Sepehr M., Boccaleri E., “Synthetic, layered nanoparticles for polymeric nanocomposites (PNCs)”, Polymers for Advanced Technologies, 18, 1-37, 2007.
• [4] Wang W.S., Liang C.K., Chen Y.C., et al., “Transparent and flame retardant PMMA/clay nanocomposites prepared with dual modified organoclay”, Polymers for Advanced Technologies, 23, 625-631, 2012.
• [5] Hu Y.H., Chen C.Y., Wang C.C., “Viscoelastic properties and thermal degradation kinetics of silica/PMMA nanocomposites”, Polymer Degradation and Stability, 84, 545-553, 2004.
• [6] Lerari D., Peeterbroeck S., Benali S., et al., “Combining atomtransfer radical polymerization and melt compounding for producing PMMA/clay nanocomposites”, Journal of Applied Polymer Science, 121, 1355-1364, 2011.
• [7] Lee M.H., Dan C.H., et al., “Effect of clay on the morphology and properties of PMMA/poly(styrene-co-acrylonitrile)/clay nanocomposites prepared by melt mixing”, Polymer, 47, 4359-4369, 2006.
• [8] Haraguchi K., “Nanocomposite hydrogels”, Current Opinion in Solid State and Materials Science, 11, 47–54, 2007.
• [9] Powell C.E., Beall G.W., “Physical properties of poly- mer/clay nanocomposites”, Current Opinion in Solid State and Materials Science, 10, 73–80, 2006.
• [10] Wang Y., Chen W.C., “Dielectric Probing of Relaxation Behaviors in PMMA/Organoclay Nanocomposites: Effect of Organic Modification”, Composite Interfaces, 17, 803-829, 2010.
• [11] Zeng C., Lee L.J., “Poly(methyl methacrylate) and Polystyrene/Clay nanocomposites prepared by in-situ polymerization”, Macromolecules, 34, 4098-4013, 2001.
• [12] Zhang W.A., Chen D.Z., et al., “Influence of four different types of organophilic clay on the morphology and thermal properties of polystyrene/clay nanocomposites prepared by using the γ-ray irradiation technique”, European Polymer Journal, 39, 2323–2328, 2003.
• [13] Madurai S.L., Joseph S.W., et al., “Intestine-specific, oral delivery of captopril/montmorillonite: formulation and release kinetics”, Nanoscale Research Letters, 6:15, 2011.
• [14] Fan X., Xia C., Advincula R.C., “Intercalation of polymerization initiators into montmorillonite nanoparticle platelets: free radical vs. anionic initiator clays”, Colloids and Surfaces A, 219, 75-86, 2003.
• [15] Achiliasa D.S., Panayotidoua E., Zuburtikudis I., “Thermal degradation kinetics and isoconversional analysis of biodegradable poly(3-hydroxybutyrate)/organomodified montmorillonite nanocomposites”, Thermochimica Acta, 514, 58–66, 2011.
• [16] Flynn J.H., Wall L.A., “Initial kinetic parameters from thermogravimetric rate and conversion data”, Journal of Polymer Science Part B: Polymer Letters, 5, 191-196, 2003.
• [17] Ozawa T., “Applicability of Friedman plot”, Journal of Thermal Analysis, 31, 547-551, 1986.
• [18] H.M. Zidan, M. Abu-Elnader, “Structural and optical properties of pure PMMA films”, Physica B, 355, 308–317, 2005.
• [19] Kurt A, “Influence of AlCl3 on the optical properties of new synthesized 3-armed poly(methyl methacrylate) films”, Turkish Journal of Chemistry, 34, 67–79, 2010.
• [20] RodrõÂguez J., GoÂmez M., et al., “Thickness dependence of the optical properties of sputter deposited Ti oxide films”, Thin Solid Films, 365, 119-125, 2000.