Water-swelling rubber was introduced in the 1970s
[1], and was used as a water-stopping material in civil
engineering and building construction. Much research
work on the preparation and properties of water-swelling
rubber has been reported in recent years, and most
of the reports focused on the mechanical blends of
water-swelling resins and rubbers [2]. This method
generally resulted in inhomogeneous dispersion of
water-swelling resins in the rubber matrix and poor
mechanical properties due to the poor compatibility
between the rubber and the resin. In addition, the
water-swelling resins were easily extracted from the
vulcanizates during water swelling.