Amino hydroxyl-naphthalene sulfonic acids
10 mmol in 300 ml water was added to the solution and pH 5-6 was adjusted by addition of 10% sodium carbonate aqueous solution (Table-1).
Effect of Cation on Swelling Behavior of Sulfonic Acid
Macroporous Superabsorbent Composite
have demonstrated that the inclusion of sulfonic acid
side groups in polyethylene cause a decrease in the percent crystallinity of polymer as a function of the acid concentration .
The perfluorinated carboxylates include perfluorooctanoic acid (PFOA) and perfluorononanoic acid (PFNA), and the perfluorinated sulfonates include perfluorooctane sulfonic acid
(PFOS) and perfluorohexane sulfonic acid
The membrane samples were stained with lead ions by ion exchange of the sulfonic acid
groups in 0.
As solvents were evaporated from casting solutions, ihe sulfonic acid
groups on the side chains of Nafion will move along with periluorocarbon backbones to form solid membranes.
Polymers from monomers of sulfonic acid
, AA, and AMPS with and without BA were synthesized to study their swelling capacity and their texture and to find the influence of the synthesis conditions on these properties.
Solvent P1 P2 P3 P4 P5 DMF ++ ++ ++ ++ ++ DMSO ++ ++ ++ ++ ++ 1,4-Dioxane ++ ++ ++ ++ ++ n-Hexane -- -- -- -- -- Dichloromethane ++ ++ ++ ++ ++ Diethylether -- -- -- -- -- Methanol -- -- -- -- -- THF ++ ++ ++ ++ ++ EMK ++ ++ ++ +- +- Acetonitrile -- -+ -+ -- -- Ethanol -- -- -- -- -- P1, poly(VBOPE); P2, oxime polymer; P3, TSC polymer; P4, hydrazone polymers; P5, sulfonic acid
hydrazone polymer; ++, soluble at room temperature; +-, swelling or party soluble at room temperature; -+, swelling or party soluble by heating; -, insoluble.
In these animals, perfluorooctane sulfonic acid
(PFOS) was demonstrated to be the predominant perfluorinated pollutant for which concentrations up to 3.
groups were introduced into PVA matrix at various molar ratios by modifying the chemical structure of the PVA through esterification with SSA (Table 1).
As a result, Pilot now offers the following products: sulfonate AA10 sodium dodecylbenzene sulfonate (branched alkyl chain); SADPO sulfonated alkyl diphenyl oxide, sodium salt; sulfonate OA-5R sulfonated oleic acid, sodium salt; sulfonic 800 sulfonated oleic acid; sulfonate OE-500 sulfonated oleic acid, N-amylester, sodium salt; PTSA para toluene sulfonie Acid--anhydrous; PTSA 65% para toluene sulfonic acid