EFFECTS OF ORGANOSILICON POLYMER NANO COATING ON AGGLOMARATION AND THERMAL DECOMPOSITION OF AMMONIUM PERCHLORATE

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SHAFIEE MOHAMMAD SADEGH; SEMNANI RAHBAR MOJTABA

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Seminar: IRANIAN SEMINAR OF ANALYTICAL CHEMISTRY
Year:2014 | Issue:20

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Title

EFFECTS OF ORGANOSILICON POLYMER NANO COATING ON AGGLOMARATION AND THERMAL DECOMPOSITION OF AMMONIUM PERCHLORATE

Author(s)

SHAFIEE MOHAMMAD SADEGH | SEMNANI RAHBAR MOJTABA | Issue Writer Certificate

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Abstract

AMMONIUM PERCHLORATE (AP) IS AN INORGANIC SALT THAT IS USED WIDELY IN LABORATORIES AND INDUSTRIALS. AGGLOMERATION AND NO CONTROL ON PARTICLE SIZE IS IMPORTANT PROBLEM ABOUT AP.COATING IS A METHOD TO PREVENT AGGLOMERATION OR TO IMPROVE THERMAL DECOMPOSITION PROPERTIES OF AP. ORGANOSILICON COMPOUNDS ARE ONE OF COATING AGENT GROUP THAT IS USED FOR COATING OF AP [1-3]. IN THIS RESEARCH AP PARTICLES ARE COATED WITH POLY (METHYL HYDROGEN SILOXAN) AS ORGANOSILICON POLYMER BY SOLVENT METHOD AND COMPARED WITH INDUSTRIAL AP (COATED WITH SODIUM LAURYL SULFATE) AND UNCOATED AP USED AS REFERENCE SAMPLE. THIS COATING AGENT CAN CREATE STEADY AND VERY THIN FILM ON SURFACE OF AP PARTICLES (LESS THAN 100 NANOMETER) SO PURITY OF AP THAT IS COATED IN THIS RESEARCH IS MORE THAN INDUSTRIAL AP. DIFFERENTIAL SCANNING CALORIMETRY (DSC), THERMOGRAVIMETRY (TG), AND SCANNING ELECTRON MICROSCOPY (SEM) HAVE BEEN EXPLOITED TO INVESTIGATE THE THERMAL DECOMPOSITION PROPERTIES, HEAT OF DECOMPOSITION, AND COATING MORPHOLOGY OF PURE AND COATED SAMPLES. THE RESULTS SHOWED THAT COATED AP WITH POLY (METHYL HYDROGEN SILOXAN) HAS ELIMINATED AP AGGLOMERATION COMPLETELY. THE THERMAL ANALYSIS OF COATED AP, PREPARED AT OPTIMIZED COATING CONDITIONS, SHOWED THAT ITS THERMAL DECOMPOSITION TEMPERATURE INCREASES ABOUT 15OC WITH COMPARE TO UNCOATED SAMPLE WHEREAS PHASE TRANSITION TEMPERATURE IS CONSTANT APPROXIMATELY. ALSO HEAT OF DECOMPOSITION OF POLY (METHYL HYDROGEN SILOXAN) COATED AP IS MORE THAN INDUSTRIAL AP ABOUT 30 J/G. IN ADDITION, TG CURVES SHOW THAT START AND END OF WEIGHT LOSS TEMPERATURE OF COATED AP ARE SHIFT TO HIGHER TEMPERATURE. IN THE OTHER WORD, WITH THIS COATING, THERMAL STABILITY AND HEAT OF DECOMPOSITION OF AP ARE INCREASED AND PROBLEMS OF STORING AND MOISTURE ABSORPTION OF AP ARE SOLVED.

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APA: Copy

SHAFIEE, MOHAMMAD SADEGH, & SEMNANI RAHBAR, MOJTABA. (2014). EFFECTS OF ORGANOSILICON POLYMER NANO COATING ON AGGLOMARATION AND THERMAL DECOMPOSITION OF AMMONIUM PERCHLORATE. IRANIAN SEMINAR OF ANALYTICAL CHEMISTRY. SID. https://sid.ir/paper/913130/en

Vancouver: Copy

SHAFIEE MOHAMMAD SADEGH, SEMNANI RAHBAR MOJTABA. EFFECTS OF ORGANOSILICON POLYMER NANO COATING ON AGGLOMARATION AND THERMAL DECOMPOSITION OF AMMONIUM PERCHLORATE. 2014. Available from: https://sid.ir/paper/913130/en

IEEE: Copy

MOHAMMAD SADEGH SHAFIEE, and MOJTABA SEMNANI RAHBAR, “EFFECTS OF ORGANOSILICON POLYMER NANO COATING ON AGGLOMARATION AND THERMAL DECOMPOSITION OF AMMONIUM PERCHLORATE,” presented at the IRANIAN SEMINAR OF ANALYTICAL CHEMISTRY. 2014, [Online]. Available: https://sid.ir/paper/913130/en

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