Effect of Starch-Based Adhesives in the Production of Plaster Casts from Industrial Waste

Abstract:

In this work, the waste gypsum from industry is repurposed to add value in the medical field by transforming it into Plaster cast. The waste gypsum or calcium sulfate dihydrate is heated to a temperature of 120 °C for three hours to obtain calcium sulfate hemihydrate or Plaster of Paris. Subsequently, it is mixed with water in a 1:1 ratio before embedded on gauze. To enhance the strength of the plaster cast, different types of starch-based adhesives are mixed with plaster solution to investigate their impact on shaping and the strength of the plaster. Three types of starch, including potato starch, tapioca starch, and cornstarch, are utilized. After testing the strength of plaster cast mixed with adhesive starch, it is found that with 5% potato starch, the plaster cast exhibits the highest strength among all variants. In addition, its result from SEM indicated that the potato starch was distributed and packed tightly onto gauze.

• Periodical: Key Engineering Materials (Volume 999)
• Pages: 11-16
• DOI: https://doi.org/10.4028/p-CoeC2t
• Online since: December 2024
• Authors: Sawanyar Thaoto, Jirachaya Kaiananthip, Nisalak Trongsiriwat*
• Keywords: Gypsum, Industrial Waste, Plaster Cast, Starch Adhesives

References

[1] M. Hossain, J. Brooks, I. Maddox, Production of citric acid from whey permeate by fermentation using Aspergillus niger, New Zealand Journal of Dairy Science and Technology (1983) 161-168.

[2] B. Guan, G. Jiang, H. Fu, L. Yang, Z. Wu, Thermodynamic Preparation Window of Alpha Calcium Sulfate Hemihydrate from Calcium Sulfate Dihydrate in Non-Electrolyte Glycerol-Water Solution under Mild Conditions. Industrial & Engineering Chemistry Research 23 (2011) 13561-13567.

DOI: 10.1021/ie201040y

[3] S.M.M. Pinheiro, G. Camarini, Characteristics of gypsum recycling in differentcycles, International Journal of Engineering and Technology 7 (2015) 215-218.

[4] F.A. Adekola, A.I. Olosho, A.A. Adeleke, O.A.A. Eletta, S.B. Agaja, Physico-mechanical assessment of plaster of Paris bandage produced from locally sourced materials. Bull. Mater. Sci.  42 (2019), 1-6.

DOI: 10.1007/s12034-019-1744-1

[5] A.J. Parmar, S.K. Tyagi, V.S. Dabas, J.N. Mistry, S.K. Jhala, D.N. Suthar, I.M. Bhatti, Assessment of the physical and mechanical properties of plaster of Paris bandage cast used as a splinting and casting materials. Veterinary World 7 (2014)1123-1126.

DOI: 10.14202/vetworld.2014.1123-1126

[6] L. Ajala, O.L. Otutu, A. Bamgbose, Effect of delayed processing on some physico-chemical properties of cassava starch. Am. J. Food Nutr. 2 (2012) 31–36.

[7] J.H. Sung, D.P. Park, B.J. Park, H.J. Choi, M.S. Jhon, Phosphorylation of Potato Starch and Its Electrorheological Suspension. Biomacromolecules, 6 (2005) 2182-2188.

DOI: 10.1021/bm050146w

[8] S. Mali, L.B. Karam, L.P. Ramos, M.V.E. Grossmann, Relationships among the Composition and Physicochemical Properties of Starches with the Characteristics of Their Films. J. Agric. Food Chem. 52 (2004) 7720-7725.

DOI: 10.1021/jf049225+

[9] R. Hoover, Composition, molecular structure and physicochem-ical properties of tuber and root starches: Carbohydr. Polym. 45 (2001) 253-267.

DOI: 10.1016/s0144-8617(00)00260-5