Possible use of gypsum waste from ceramics industry as semi-reinforcing filler in epoxidized natural rubber composites
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In recent years, the incorrect disposal of industrial solid wastes is one of the main reasons for serious environmental pollution. The appropriate recycle of these waste materials in commercial purpose is the key way to protect the environment. In the present study, the suitability of gypsum waste (GW) from ceramics factory as a filler in epoxidized natural rubber (ENR) was explored. Most importantly, the properties of ENR/GW composites were compared with those of ENR composites filled with most widely used non-reinforcing filler calcium carbonate (CaCO3). In both ENR/GW and ENR/CaCO3 composites, the values of torque difference, hardness and tensile modulus increased steadily with increasing filler content. However, at same filler loading level, the mechanical and dynamic mechanical properties of ENR/GW composites were better as compared to those of ENR/CaCO3 composites. ENR/GW composite also exhibited considerably higher thermal stability as compared to either unfilled ENR or ENR/CaCO3 composite. As a whole, GW could be used as a cost-effective semi-reinforcing filler in ENR composites.
KeywordsRubber Gypsum waste Waste management Filler Mechanical properties
One of the authors, Kumarjyoti Roy, would like to thank Ratchadaphiseksomphot Endowment Fund, Chulalongkorn University, for senior postdoctoral fellowship assistance.
- 2.Chuayjuljit S, Imvittaya A, Na-Ranong N, Potiyaraj P (2002) Effects of particle size and amount of carbon black and calcium carbonate on curing characteristics and dynamic mechanical properties of natural rubber. J Metals Mater Miner 12:51–57Google Scholar
- 5.Mishra S, Shimpi NG (2005) Comparison of nano CaCO3 and fly ash filled with styrene butadiene rubber on mechanical and thermal properties. J Sci Ind Res 64:744–751Google Scholar
- 17.Taverna ME, Tassara O, Morán J, Sponton M, Frontini P, Nicolau V, Estenoz D (2019) Effect of kraft lignin from hardwood on viscoelastic, thermal, mechanical and aging performance of high pressure laminates. Waste Biomass Valor 10:585–597. https://doi.org/10.1007/s12649-017-0088-6 CrossRefGoogle Scholar
- 23.Radulović D, Terzić A, Andrić L (2017) The construction and ceramics industry waste gypsum valorization possibilities. In: Lee B, Gadow R, Mitic V (eds) Proceedings of the IV advanced ceramics and applications conference, Atlantis Press, Paris, pp 475–491Google Scholar
- 24.Godinho-Castro AP, Testolin RC, Janke L, Corrêa AXR, Radetski CM (2012) Incorporation of gypsum waste in ceramic block production: proposal for a minimal battery of tests to evaluate technical and environmental viability of this recycling process. Waste Manag 32:153–157. https://doi.org/10.1016/j.wasman.2011.08.019 CrossRefGoogle Scholar
- 27.Tounchuen K, Buggakupta W, Panpa W (2014) Characteristics of automotive glass waste-containing gypsum bodies made from used plaster mould. Key Eng Mater 608:91–96. https://doi.org/10.4028/www.scientific.net/KEM.608.91 CrossRefGoogle Scholar
- 32.Flynn B (1998) Invisible threat: odors & landfill gas from C&D waste. Waste Age 29:91–97Google Scholar
- 38.Ismail H, Shaari SM (2010) Curing characteristics, tensile properties and morphology of palm ash/halloysite nanotubes/ethylene-propylene-diene monomer (EPDM) hybrid composites. Polym Test 29:872–878. https://doi.org/10.1016/j.polymertesting.2010.04.005 CrossRefGoogle Scholar