Abstract
Mixtures of hydrophilic and hydrophobic methacrylates were grafted onto amylopectin, using the ceric ion redox initiation system. The pairs hydroxyethyl methacrylate (HEMA)/methyl methacrylate (MMA), hydroxypropyl methacrylate (HPMA)/MMA, HEMA/ethyl methacrylate (EMA) and HPMA/EMA were grafted at different concentrations of the monomer feed. In all cases, a major formation of ungrafted acrylic polymer can be observed when the hydrophilic monomer used is HPMA. High yields were obtained with all the mixtures at certain concentrations of the monomer feed.
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