The objective of the research was to understand and improve the unusual physical and atomization properties of the\r\ncomplexes/adhesives derived from the tapioca starch by addition of borate and urea. The characterization of physical properties\r\nof the synthesized adhesives was carried out by determining the effect of temperature, shear rate, and mass concentration of\r\nthickener/stabilizer on the complex viscosity, density, and surface tension. In later stage, phenomenological analyses of spray jet\r\nbreakup of heated complexeswere performed in still air.Using a high speed digital camera, the jet breakup dynamicswere visualized\r\nas a function of the system input parameters.Thefurther analysis of the grabbed images confirmed the strong influence of the input\r\nprocessing parameters on full cone spray patternation. It was also predicted that the heated starch adhesive solutions generate a\r\ndispersed spray pattern by utilizing the partial evaporation of the spraying medium. Below 40�°C of heating temperature, the radial\r\nspray cone width and angle did not vary significantly with increasing Reynolds andWeber numbers at early injection phases leading\r\nto increased macroscopic spray propagation.The discharge coefficient, mean flow rate, and mean flow velocity were significantly\r\ninfluenced by the load pressure but less affected by the temperature.
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