| Abstract: | Water-leaching experiments of halides from polymers were carried out in batch and continuous systems. The effects of flow rate, temperature, and salt content on the leaching kinetics were investigated. Different thermoplastic polymers were used as the salt carrier, and the release kinetics from them was established. NaCl, NaBr, and NaI were leached out completely from nylons, while NaF could only be partially removed. Release mechanisms involving diffusion, capillary flow, and fracturing were described based upon the leaching kinetics and porosity distribution in the resulting foams. |
