By multicomponent mechanical blending technology, water‐swelling rubber (WSR) was prepared through choosing chlorinated polyethylene (CPE), a superabsorbent polymer (cross‐linking poly(sodium acrylate), CPNaAA), and compatibilizer (poly(methyl methacrylate‐co‐maleic anhydride), P (MMA‐co‐MAH)) along with other minor additives. P (MMA‐co‐MAH) was synthesized by grafting maleic anhydride (MAH) onto methyl methacrylate (MMA). Microstructure, water‐absorbent properties, and mechanical properties of WSR were investigated. The results showed that P (MMA‐co‐MAH) boosted the dispersibility between CPNaAA and CPE and led to the increase in Shore A hardness, tensile strength, tensile stress at 100%, and water‐swelling behavior, whereas the elongation at break and weight loss were decreased with P (MMA‐co‐MAH) content. When the content of P (MMA‐co‐MAH) reached 8 phr, the tensile strength, hardness, and water‐swelling ability of dry‐state WSR exhibited a maximum value and the percentage loss ratio of CPNaAA reached a relatively low value.
A water-swellable rubber (WSR) compatibilized by a functional graft copolymer, CPE-g-GMA, has been prepared by blending chlorinated polyethylene (CPE) with a superabsorbent resin (SAR) poly(acrylic acid-co-acrylamide) [P(AA-AM)]. The dependence of the WSR's water-absorbent properties on the SAR and the CPE-g-GMA contents was investigated, such as
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