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Separation type: Bridge Ion Separation Technology, or BIST™ by SIELC Technologies
m-Xylylenediamine (MXDA) is a popular curing agent used on epoxy resins. 2,4,6-Tris(dimethylaminomethyl)phenol is another amine-based curing agent used on epoxy resins. Using SIELC’s newly introduced BIST™ method, these amines can be retained and separated on a positively charged, anion-exchange BIST™ B or BIST™ B+ column. The surface chemistry of BIST™ B+ columns are designed to have stronger ionic retention capabilities, resulting in the marked increase in retention compared to BIST™ B columns.
There are two keys to this retention method: 1) a multi-charged, negative buffer, such as Sulfuric acid (H2SO4), which acts as a bridge, linking the positively charged dipeptide to the positively charged column surface and 2) a mobile phase consisting mostly of organic solvent (such as MeCN) to minimize the formation of a solvation layer around the charged analytes. Using this new and unique analysis method, these two amines can be UV detected at 210 nm.
|Column||BIST B+, BIST B, 3.2×100 mm, 5µm, 100A|
|Mobile Phase||MeCN – 70%|
|Buffer||H2SO4 – 0.2%|
|Flow Rate||1.0 ml/min|
|Detection||UV 210 nm|
|Class of Compounds||Amines|