Effects of cell structure on Swelling behaviors of nitrile rubber foam

Many engineering applications, such as reverse osmosis, electrodialysis, and controlled drug release,utilize polymeric materials that are exposed to various chemicals during service. The swellingbehavior of these materials is critical criterion, as this physical property undergoes dynamic changesand may lead to failure. In this study, the microstructure and swelling behavior of nitrile rubber foamswith different densities were investigated. The microstructural analysis revealed that as the foamdensity decreased, the cell size increased, the cell count decreased, and the cell size distributionbecame more heterogeneous. Furthermore, all of the equilibrium swelling, swelling rate, anddiffusion coefficient increased with decreasing foam density. These Results underscore theimportance of engineering the foam microstructure to optimize the desired swelling behavior forrelevant applications.

کلیدواژه ها:

foam ، Nitrile rubber ، foam structure ، Swelling ، diffusion coefficient