In this study, surface modification of barium sulfate was investigated using several model molecules for chemical treatment: ethanesulfonic acid, butyric acid, trimethoxy(propyl) silane and phosphoric acid 2-hydroxyethyl methacrylate. Samples were characterized by FT-IR and TGA to check the capability of these model molecules to interact with BaSO 4 surface. The results pointed out the presence of an organic layer around the surface after the chemical treatment even after several washings to remove all species in excess. Model molecules were grafted onto BaSO 4 surface and grafted density was determined. It reveals that phosphoric acid and carboxylic acid are the best candidates for the modification of BaSO 4 surface. Both can be used as anchoring groups to modify the hydrophilic balance of barium sulfate surface in order to avoid the formation of aggregates and to improve the compatibility of this filler within hydrophobic polymer matrix.
KeywordsBarium SulfateSurface ModificationGrafted Density
Yap, J., Leong, Y.K. and Liu, J. (2011) Structural Recovery Behaviour of Barite-Loaded Bentonite Drilling Muds. Journal of Petroleum Science and Engineering, 78, 552-558. https://doi.org/10.1016/j.petrol.2011.06.010
Romero-Ibarra, I.C., Bonilla-Blancas, E., Sanchez-Solis, A. and Manero, O. (2012) Influence of X-Ray Opaque BaSO4 Nanoparticles on the Mechanical, Thermal and Rheological Properties of Polyoxymethylene Nanocomposites. Journal of Polymer Engineering, 32, 319-326. https://doi.org/10.1515/polyeng-2011-0135
Yang, J.-N., Xu, Y.-X, Nie, S.-B, Cheng, G.-J, Tao, Y.-L and Zhu, J.-B. (2018) Morphological Structure, Impact Toughness, Thermal Property and Kinetic Analysis on the Cold Crystallization of Poly (Lactic Acid) Bio-Composites Toughened by Precipitated Barium Sulfate. Polymer Degradation and Stability, 158, 176-189. https://doi.org/10.1016/j.polymdegradstab.2018.11.008
Yang, J., Wang, C., Shao, K., Ding, G., Tao, Y. and Zhu, J. (2015) Morphologies, Mechanical Properties and Thermal Stability of Poly (Lactic Acid) Toughened by Precipitated Barium Sulfate. Russian Journal of Physical Chemistry, 89, 2092-2096. https://doi.org/10.1134/S0036024415110242
Bala, H., Fu, W., Guo, Y., Zhao, J., Jiang, Y., Ding, X., Yu, K., Li, M. and Wang, Z. (2006) In Situ Preparation and Surface Modification of Barium Sulfate Nanoparticles. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 274, 71-76. https://doi.org/10.1016/j.colsurfa.2005.08.050
El-Ghaffar M.A. A, Abdelwahab, N.A., Fekry Amany, M., Sanad, M.A., Sabaa, M.W. and Soliman, S.M.A. (2020) Polyester-Epoxy Resin/Conducting Polymer/Barium Sulfate Hybrid Composite as a Smart Eco-Friendly Anti-Corrosive Powder Coating. Progress in Organic Coatings, 144, 105664. https://doi.org/10.1016/j.porgcoat.2020.105664
Kopec, M., Rossenaar, B.D., van Leerdam, K., Davies, A.N., Lyon, S.B., Visser, P. and Gibbon, S.R. (2020) Chromate Ion Transport in Epoxy Films: Influence of BaSO4 Particles. Progress in Organic Coatings, 147, 105739. https://doi.org/10.1016/j.porgcoat.2020.105739
Wang, F., Xu, G., Zhang, Z. and Xin, X. (2005) Morphology Control of Barium Sulfate by PEO-PPO-PEO as Crystal Growth Modifier. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 259, 151-154. https://doi.org/10.1016/j.colsurfa.2005.02.025
Romero-Ibarra, I.C., Bonilla-Blancas, E., Sánchez-Solís, A. and Manero, O. (2012) Influence of the Morphology of Barium Sulfate Nanofibers and Nanospheres on the Physical Properties of Polyurethane Nanocomposites. European Polymer Journal, 48, 670-676. https://doi.org/10.1016/j.eurpolymj.2012.01.001
Zhang, M., Zhang, B., Li, X., Yin, Z. and Guo, X. (2011) Synthesis and Surface Properties of Submicron Barium Sulfate Particles. Applied Surface Science, 258, 24-29. https://doi.org/10.1016/j.apsusc.2011.07.137
Koleske, J.V. (1995) Paint and Coating Testing Manual, Chapter 24.
Bowditch, M.R. and Stannard, K.J. (1984) The Interaction of Water with a Barytes-Filled Polyurethane. International Journal of Adhesion and Adhesives, 4, 175-178. https://doi.org/10.1016/0143-7496(84)90027-7
Schuller, A.S., Delaite, C. and Farge, H. (2011) Effect of a Formulation Named “Giral” on Mechanical Properties of a Composite Based on Silica and Unsaturated Polyester Resin. Polymer Bulletin, 66, 77-94. https://doi.org/10.1007/s00289-010-0319-5
Mallakpour, S. and Madani, M. (2015) A Review of Current Coupling Agents for Modification of Metal Oxide Nanoparticles. Progress in Organic Coatings, 86, 194-207. https://doi.org/10.1016/j.porgcoat.2015.05.023
Zhao, Y.H. and Liu, J.R. (2006) Effect of EDTA and Phosphate on Particle Size during Precipitation of Nanosized BaSO4 Particles. Chemistry Letters, 35, 1040-1041. https://doi.org/10.1246/cl.2006.1040
Wright, J.A., Harrop, R., Williams, P.A., Pass, G. and Robb, I.D. (1987) Exchange and Competitive Adsorption of Polyelectrolytes on Barium Sulphate. Colloids and Surfaces, 24, 249-258. https://doi.org/10.1016/0166-6622(87)80354-2
Black, S.N., Bromley, L.A., Cottier, D., Davey, R.J., Dobbs, B. and Rout, J.E. (1991) Interactions at the Organic/Inorganic Interface: Binding Motifs for Phosphonates at the Surface of Barite Crystals. Journal of the Chemical Society, Faraday Transactions, 87, 3409-3414. https://doi.org/10.1039/ft9918703409
Lee, S.S., Kim, J., Park, M., Lim, S. and Choe, C.R. (2001) Transesterification Reaction of the BaSO4-Filled PBT/Poly(Ethylene Terephthalate) Blend. Journal of Polymer Science Part B: Polymer Physics, 39, 2589-2597. https://doi.org/10.1002/polb.10011
Li, L.L., Hang, J.Z. and Shi, L.Y. (2009) Surface Modification of Barite Nanoparticles Using Stearate. Journal of Shanghai University (English Edition), 13, 296-300. https://doi.org/10.1007/s11741-009-0409-1
Socrates, G. (2001) Infrared and Raman Characteristic Group Frequencies: Tables and Charts. 3rd Edition, Wiley, Hoboken.
Jiang, D.D., Yao, Q., McKinney, M.A. and Wilkie, C.A. (1999) TGA/FTIR Studies on the Thermal Degradation of Some Polymeric Sulfonic and Phosphonic Acids and Their Sodium Salts. Polymer Degradation and Stability, 63, 423-434. https://doi.org/10.1016/S0141-3910(98)00123-2
McElwee, J., Helmy, R. and Fadeev, A.Y. (2005) Thermal Stability of Organic Monolayers Chemically Grafted to Minerals. Journal of Colloid and Interface Science, 285, 551-556. https://doi.org/10.1016/j.jcis.2004.12.006
Cochez, M., Ferriol, M., Weber, J.V., Chaudron, P., Oget, N. and Mieloszynski, J.L. (2000) Thermal Degradation of Methyl Methacrylate Polymers Functionalized by Phosphorus-Containing Molecules I. TGA/FT±IR Experiments on Polymers with the Monomeric Formula CH2C(CH3)C(O)OCHRP(O)(OC2H5)2(R=H, (CH2)4CH3, C6H5Br, C10H7. Polymer Degradation and Stability, 70, 455-462. https://doi.org/10.1016/S0141-3910(00)00141-5
Brochier Salon, M.-C., Abdelmouleh, M., Boufi, S., Belgacem, M.N. and Gandini, A. (2005) Silane Adsorption onto Cellulose Fibers: Hydrolysis and Condensation Reactions. Journal of Colloid and Interface Science, 289, 249-261. https://doi.org/10.1016/j.jcis.2005.03.070
Brochier Salon, M.-C., Bayle, P.-A., Abdelmouleh, M., Boufi, S. and Belgacem, M.N. (2008) Kinetics of Hydrolysis and Self-Condensation Reactions of Silanes by NMR Spectroscopy. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 312, 83-91. https://doi.org/10.1016/j.colsurfa.2007.06.028
Flesh, C., Joubert, M., Bourgeat-Lami, E., Mornet, S., Duguet, E., Delaite, C. and Dumas, P. (2005) Organosilane-Modified Maghemite Nanoparticles and Their Use as Co-Initiator in the Ring-Opening Polymerization of e-Caprolactone. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 262, 150-157. https://doi.org/10.1016/j.colsurfa.2005.04.039
Azzopardi, M.J. and Arribart, H. (1994) In Situ FTIR Study of the Formation of an Organosilane Layer at the Silica/Solution Interface. The Journal of Adhesion, 46, 103-115. https://doi.org/10.1080/00218469408026653
Cade-Menun, B.J. (2005) Characterizing Phosphorus in Environmental and Agricultural Samples by 31P Nuclear Magnetic Resonance Spectroscopy. Talanta, 66, 359-371. https://doi.org/10.1016/j.talanta.2004.12.024
Plass, J., Emeis, D. and Blümich, B. (2001) 31P Nuclear Magnetic Resonance Studies on Alkyl Phosphate Emulsifiers in Cosmetic Oil-in-Water Emulsions. Journal of Surfactants and Detergents, 4, 379-384. https://doi.org/10.1007/s11743-001-0191-3