AbstractThe monomer 2‐butenyl acrylate was reacted with starch by exposure to either60Co irradiation or ceric ion initiation. Monomer conversion in the presence of starch is greater than in the absence of starch, indicating that a starch initiating mechanism takes place for60Co irradiated samples. Acetone extraction indicates little or no soluble homopolymer in the grafts. Portions of the samples soluble in dimethyl sulfoxide (DMSO) appear to be low‐level 2‐butenyl acrylate‐grafted starch by infrared analysis. DMSO‐insoluble portions (usually more than 50% of each sample) are somewhat more soluble in 1NNaOH at room temperature. This indicates that the 2‐butenyl acrylate acts as an easily hydrolyzed crosslink for starch in samples containing as low as 5 wt % grafted poly(2‐bute
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