Summary
Dehydrochlorination of poly (vinylchloride) (PVC) bead particles (410-840 μm) has been performed by heating in liquid paraffin or pre-treatment with KOH-isopropanol and subsequent heating at 200 °C. These procedures give crosslinked dark-colored products with retention of the bead shapes. Catalytic epoxidation of the dehydrochlorinated products with t-butyl hydroperoxide yields gray-white to dark products with reasonable epoxide contents (1.7-4.7 mmol per gram). The method presented offers a simple pathway to prepare epoxidized spherical beads, starting from PVC. The resulting products are very useful as functional group carriers, due to high reactivity of the epoxy groups.
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Bicak, N., Senkal, B.F. & Gazi, M. Epoxide containing spherical beads from PVC. Polymer Bulletin 51, 231–236 (2003). https://doi.org/10.1007/s00289-003-0216-2
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DOI: https://doi.org/10.1007/s00289-003-0216-2