Hydrogels salt sensitivity

Salt Sensitivity of Swelling Effect of Valency of Ion The swelling capacity of superabsorbent hydrogels could be significantly affected by various factors of the external solutions such as its valencies and salt concentration. The... 

To make a comparative measure of the sensitivity of the hydrogels to the sort of aqueous fluid, we used a dimensionless salt sensitivity factor,/(dimensionless), which may be expressed as ... 

The effect of increasing cation charge on the swelling of p-g-CT-NajCit-CAc can be found from the/valnes (Table 12.1). Smaller/valne for salt compart to aqueous fluid indicates the low salt sensitive swelling natnre of hydrogel and vice versa [46]. Table 12.1 also shows that swelling factor increases with increase in cationic charge. 

Hua, Z., Chen, Z., Li, Y. and Zhao, M. (2008) Thermosensitive and salt-sensitive molecularly imprinted hydrogel for bovine serum albumin , Langmuir, 24, 5773-5780. 

Lin H, Sritham E, Lim S, Cui Y, Gunasekaran S (2010). nthesis and characterization of pH-and salt-sensitive hydrogel based on chemically modified poultry feather protein isolate. / Appi Poiym Sci, 116,602-609. 

The sensitivity of hydrogels to a large number of physical factors like temperature [149], electrical voltage [150], pH [151-153], concentration of organic compounds in water [154], and salt concentration [155] make them promising materials for a broad range of applications as microsensors [156] and microactuators [154] in MEMS devices. 

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