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Polymerization of allyl alcohol by radiation to obtain microencapsulated structure

1989-4
Usanmaz, Ali
Sarıcılar Zengin, Süreyya
Allyl alcohol was polymerized by radiation under various conditions. The limiting conversions were about 30% in bulk, 35% when containing 0.03 mole fraction AlCl3 and 50% when water was contained at 27% (v/v). Irradiation was done with Co-60 gamma rays at room temperature and under vacuum. The presence of oxygen did not cause any change in the reaction rate. Molecular weights were determined by viscosity and cryoscopic methods. K and α values were found to be 3.57×10−4 and 0.62 for solutions in methanol at 25°C. The polymers up to about 10% conversion were viscous liquids having microcapsular structures: at high conversions, they became hard and glassy. The microencapsulated structures were also retained in solutions in methanol, acetone, and isopropyl alcohol. The samples were insoluble in water, benzene, and toluene.