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Physically cross-linked starch-g-PVA hydrogels with controllable grafted branch length were prepared. Polyvinyl acetate (PVAc) was grafted onto starch via radical copolymerization. The molecular weight of PVAc was tailored using the chain transfer reaction. In consequence, the branch length of starch-g-PVA, which derived from starch-g-PVAc, could be easily controlled. In this paper, the viscosity...
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