Grafting of acrylonitrile (AN)-styrene (St) onto cellulose.Just AN was grafted onto cellulose by ceric salt and after some minutes St was added.Having the AN-St grafted cellulose obtained, it is effected that St would be grafted at the end of the grafted AN chain. The results obtained are;(a) Degree of grafting of St in AN-St grafted product is at the maximum when AN reaction before the addition of St is 15 min(b) Degree of grafting of St is also at the maximum with varied quantity of AN, and increases linearly with the increased St quantity.(c) Formation of benzene-D. M. F. extract (homopolymer) would be due to the thermal polymerization by ceric salt.2. Hydrolysis of grafted cellulose.AN grafted and AN-St grafted cellulose were hydrolyzed by 2.5 N HCI sol. at such a mild condition as not to hydrolyze AN chains and to hydrolyze 10% of the original cellulose.After the hydrolysis, 40% of the grafted chains was extracted. It means that 40% of the grafting occured onto such a part of cellulose that is accessible to hydrolysis.
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Iwai et al. (1963) studied this question.