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        반응표면분석법을 이용한 결정화 공정의 최적화

        이세은 ( Se Eun Lee ),김재경 ( Jae Kyeong Kim ),한상근 ( Sang Keun Han ),채주승 ( Joo Seung Chae ),이근득 ( Keun Duk Lee ),구기갑 ( Kee Kahb Koo ) 한국공업화학회 2015 공업화학 Vol.26 No.6

        Cyclotrimethylene trinitramine (RDX) is a high explosive commonly used for military applications. Submicronization of RDX particles has been a critical issue in order to alleviate the unintended and accidental stimuli toward safer and more powerful performances. The purpose of this study is to optimize experimental variables for drowning-out crystallization applied to produce submicron RDX particles. Effects of RDX concentration, anti-solvent temperature and anti-solvent mass were analyzed by the central composite rotatable design. The adjusted determination coefficient of regression model was calculated to be 0.9984 having the p-value less than 0.01. Response surface plots based on the central composite rotatable design determined the optimum conditions such as RDX concentration of 3 wt%, anti-solvent temperature of 0.2 ℃ and anti-solvent mass of 266 g. The optimum and experimental diameters of RDX particles were measured to be 0.53 μm and 0.53 μm, respectively. The regression model satisfactorily predicts the average diameter of RDX particles prepared by drowning-out crystallization. Structure of RDX crystals was found to be α-form by X-ray diffraction analysis and FT-IR spectroscopy.

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