Graft copolymerization of 2‐methyl‐5‐vinyl pyridine to poly(ethylene terephthalate) fibres using a post‐radiation technique

摘要

AbstractRadiation‐induced grafting of 2‐methyl‐5‐vinyl pyridine (MVP) to poly(ethylene terephthalate) fibers (PET) was investigated under a variety of conditions employing a post‐radiation technique. Over a range of a total dose of 1–10 Mrad, increasing the total dose from 1 up to 3 Mrad was accompanied by a significant enhancement in the extent and rate of grafting. Further increase in the total dose caused a decrease. The same situation was encountered with respect to MVP concentration (5–10) and polymerization temperature (75°–90°C). A MVP concentration of 8 and a temperature of 85°C constituted the optimal. Addition of copper sulfate at a concentration of 0.05 mmole/l. offset grafting. The effect of the said parameters on homopolymerization occurring during grafting was