Epoxidized natural rubber (ENR) and a superabsorbent polymer composite (SAPC) along with other minor components were mechanically blended in an internal mixer (Brabender Plasticorder) at 40°C and 60 r/min rotor speed with 80% fill factor. The SAPC was synthesized by grafting polyacrylamide onto hydroxyethyl cellulose backbones and adding bentonite clay. The first water-swelling behavior was investigated with alternative epoxidation levels of the ENR. Water-swellable rubber (WSR) performed well in terms of water absorbency, and weight loss was achieved with 50 mole% epoxidation level, so this ENR was chosen for the rubber matrix from which WSR was prepared with various contents of SAPC (0, 5, 10, 15, and 20 phr). The results indicated that SAPC loading positively affected water absorbency, which was resulted by increasing weight loss and loss of mechanical properties, such as tensile strength and elongation at break. However, the modulus increased with SAPC content. WSR formulated from ENR-50, SAPC, and other ingredients resulting in good water-swelling behaviors and modulus, while the tensile strength and elongation at break had opposition. SAPC was an important factor to control the overall WSR properties.

在内部混合器（Brabender Plasticorder）中以40％的转子转速和60 r / min的转速将环氧天然橡胶（ENR）和高吸收性聚合物复合材料（SAPC）与其他次要成分机械混合。通过将聚丙烯酰胺接枝到羟乙基纤维素骨架上并添加膨润土来合成SAPC。用ENR的可选环氧化水平研究了第一水膨胀行为。就吸水性而言，水溶胀橡胶（WSR）表现良好，并且在50摩尔％环氧化水平下实现了重量减轻，因此选择该ENR作为制备具有各种SAPC含量的WSR的橡胶基质（0，5 ，10、15和20 phr）。结果表明，SAPC负载对吸水率有积极影响，这是由于重量损失增加以及机械性能（例如拉伸强度和断裂伸长率）的损失所致。然而，模量随SAPC含量的增加而增加。由ENR-50，SAPC和其他成分配制的WSR导致良好的水溶胀行为和模量，而抗张强度和断裂伸长率则相反。SAPC是控制整体WSR属性的重要因素。