Abstract
AbstractGraft copolymers of acrylonitrile and methyl methacrylate on unmodified holocellulose and holocellulose containing between 0.3 and 4.6% thiol groups were prepared by the use of Ce4 + initiator in aqueous medium at 29°C. It was found that although the extent of graft polymer formation on the holocellulose was appreciably reduced by the presence of thiol groups, thiolation showed little influence on the frequency of grafting. The molecular weight of grafted PMMA chains was higher than for PAN grafts; but the latter were more frequently grafted on the backbone polymer. The observed low frequency of grafting is thought to indicate that radicals formed on the cellulosic substrate may not be very reactive towards graft polymer formation.
Published Version
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