MICROSTRUCTURAL CHARACTERISATION, RHEOLOGICAL AND WATER ABSORPTION PROPERTIES OF FILLED POLYURETHANE FOAM

Main Article Content

J. A. Omotoyinbo
I. O. Oladele
J. M. Jabar
J. O. Borode
K. K. Alaname
S. R. Oke
T. F. Omotosho
F. A. Atilola
L. O. Saliu

Abstract

This work investigates the microstructural characterization, rheological and water absorption properties of granite and feldspar filled polyurethane foam. Foaming of polyurethane with the use of synthetic materilas as suitable additives remain a major setback for polyurethane foams. Hence, granite and feldspar are selected as the fillers, pulverized and sieved to ˂90 µm and are randomly dispersed into the polyurethane matrix. The matrix constituents were mixed in the same ratio while fillers were introduced via a one-shot system approach in predetermined proportions of 3-7 wt%. The work was carried out to identify optimum fillers to be utilized in the production of rigid polyurethane foams given the effect of the fillers on the microstructural characterisation, rheological and water absorption properties of the foams. SEM, XRF and FTIR analysis were used characterize the foams while rheological and water absorption tests are also carried out. The presence of the fillers in the foam showed a rupture in the structure of the foams with the cells having similar arrangements. The cream, gel, rise, and the tack-free time was delayed with the presence of the filler particles. It was discovered that 7 wt% feldspar addition enhances the cream and gel time while 3 wt% granite enhance rise and tack free time, respectively in the optima conditions. It was discovered that the two fillers had inverse effects on the rheological properties. The addition of granite and feldspar degrades the sulfonic acid groups and promoted the appearance of Si-O stretching vibration band

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Author Biography

I. O. Oladele, Metallurgical and Materials Engineering Department, Federal University of Technology, PMB, 704, Akure, Nigeria

Centre for Nanomechanics and Tribocorrosion, School of Metallurgy, Chemical and Mining Engineering, University of Johannesburg, Johannesburg, South Africa

References

Agrawal, A., Kaur, R. and Walia, R.S. (2019). Investigation on Flammability of Rigid Polyurethane Foam ‐ Mineral Fillers Composite. Fire and Materials, 43(8):917-927.

Akkoyun, M. and Akkoyun, S. (2019). Blast Furnace Slag or Fly Ash Filled Rigid Polyurethane Composite Foams : a comprehensive investigation. Journal of Applied Polymer Science, 136(20):47433.

Alaneme, K.K., Oke, S.R. and Omotoyinbo, J.A. (2013). Water Absorption Characteristics of Polyester Matrix Composites Reinforced with Oil Palm Ash and Oil Palm Fibre. Usak University Journal of Material Sciences, 2:109 -120.

Carrera, V., Partal, P., García-morales, M., Gallegos, C. and Pérez-lepe, A. (2010). Effect of Processing on the Rheological Properties of Polyurethane/uUrea Bituminous Products. Fuel Processing Technology, 91(9):1139–1145.

Czlonka, S., Strakowska, A., Strzelec, K., Kairyte, A. and Kremensas, A. (2020). Bio-based Polyurethane Composite Foams with Improved Mechanical, Thermal and Antibacterial Properties. Materials, 13(5):1108.

Gama, N.V, Ferreira, A. and Barros-timmons, A. (2018). Polyurethane Foams: past, present, and future. Materials, 11(10):1-35.

Jabar, J.M., Fakinlede, F.K. and Bello, B.E. (2018). Synthesis of Rigid Polyurethane Foam using Polyols from Fractionated Locally Sourced Vegetable. FUW Trends in Science and Technology Journal, 3(2):384-388.

Jing, W. (2009). Rheology of Foaming Polymers and its Influence on Microcellular Processing. TSpace Repository.

Kim, J.M., Han, M.S., Kim, Y.H. and Kim, W.N. (2008). Thermal, Morphological and Rheological Properties of Rigid Polyurethane Foams as Thermal Insulating Materials. Society of Rheology: Proceedings, 905–907.

Kosmela, P., Gosz, K., Kazimierski, P. and Hejna, A. (2019). Chemical Structures, Rheological and Physical Properties of Biopolyols Prepared via Solvothermal Liquefaction of Enteromorpha and Zostera Marina Biomass. Cellulose, 26:5893–5912.

Kurańska, M., Pinto, J.A., Salach, K., Barreiro, M.F. and Prociak, A. (2019). Synthesis of Thermal Insulating Polyurethane Foams from Lignin and Rapeseed Based Polyols : a comparative study. Industrial Crop Production, 143:1-9.

Ligoure, C., Cloitre, M., Le Chatelier, C., Monti, F. and Leibler, L. (2005). Making Polyurethane Foams from Microemulsions. Polymer, 46(17): 6402–6410.

Muhazeli, N.S., Nordin, N.A., Mazlan, S.A., Rizuan, N., Binta, S.A., Abd Fatah, A.Y., Ibrahim Z., Sabino U. and Choi S.B. (2019). Characterization of Morphological and Rheological Properties of Rigid Magnetorheological Foams via in situ Fabrication Method. Journal of Material Science, 54:13821-13633.

Oji, B. and Oladele, I.O. (2019) Mechanical and Water Absorption Analysis of Polyester Hybrid Matrix Composite Reinforced with Clay and Carbon Black, International Journal of Science and Research, 8(6): 2102-2105

Oladele, I. O., Ganiyu, S. and Balogun, O. P. (2011). Variation Effect of Carbon-Silica Dual Phase Fillers on the Rheological and Mechanical Properties of Natural Rubber Matrix Composites, Researcher, 3 (8): 37-42.

Oladele, I. O., Adeleke, A. D. and Okoro, A. M. (2019) Enhancement of Electrical Resistivity Property of Natural Clay/Epoxy Composite for Electrical Application, Annals of Faculty of Engineering Hunedoara-International Journal of Engineering, 1: 131-137.

Oladele, I.O., Taiwo, A.S., Okegbemi, T.A., Adeyemi, M.A. and Balogun, S.O. (2021a) Influence of Processed Waste Bagasse Fibre-Stone Dust-6063 Aluminium Alloy Particle on the Characteristics of Hybrid Reinforced Recycled HDPE Composites, International Journal of Sustainable Engineering, 14(4): 909-920.

Oladele, I.O., Ajileye, J.O., Oke, S.R., Daramola, O.O. and Adewumi, O.A. (2021b). Thermal and Water Absorption Properties of Bio-synthetic Hybrid Reinforced Polypropylene Composites. Materials Today: Proceedings, 38:994-998.

Omotoyinbo, J.A., Oladele, I.O., Jabar, J.M., Borode, J.O., Alaneme, K.K., Akinwekomi, A.D., Oke, S.R., Omotosho, T.F. and Saliu, L.O. (2021). Comparative Investigation of the Influence of Kaolin and Dolomite on the Properties of Polyurethane Foam. Manufacturing Review.8 (27):1-9.

Strakowska, A., Członka, S., Konca, P. and Strzelec, K. (2020). New Flame Retardant Systems Based on Expanded Graphite for Rigid Polyurethane Foams. Applied Sciences, 10(17): 1-13

Suleman, S., Khan, S.M., Jamil, T., Aleem, W., Shafiq, M. and Gull, N. (2014). Synthesis and Characterization of Flexible and Rigid Polyurethane Foam. Asian Journal of Applied Science, 2(5):701–710.

Widya, T. and Macosko, C.W. (2005). Nanoclay-Modified Rigid Polyurethane Foam. Journal of Macromolecular Science - Part B, 44(6):897–908.

Zhang, L., Ding, X. and Ou, Y. (2014). Properties of Rigid Polyurethane Foams Prepared with Synthesized PIPA Polyol. America Journal of Applied Chemistry, 1(1):7–14.