Binding capacity of molecularly imprinted polymers and their nonimprinted analogs
  • Metaadatok
Tartalom: http://dx.doi.org/10.1002/jssc.201500874
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published


Type = Article
Cím:
Binding capacity of molecularly imprinted polymers and their nonimprinted analogs
Létrehozó:
Dorkó, Zsanett
Szakolczai, Anett
Verbić, Tatjana
Horvai, György
Dátum:
2015
Téma:
QD01 Analytical chemistry / analitikai kémia
QD03 Inorganic chemistry / szervetlen kémia
Tartalmi leírás:
Molecularly imprinted polymers bind their target compounds at binding sites. The binding sites are typically based on some type of functional group, such as carboxyl group. The total amount of such functional groups and their distribution into available and unavailable groups is not well known. The total binding capacity is usually indirectly determined from adsorption isotherms, which are measured much below the theoretical binding capacity. This work shows that in a variety of differently prepared, methacrylic acid based molecularly imprinted and nonimprinted polymers, all carboxylic groups used for the polymer synthesis are retained in the polymer, 80-90% of them can be accessed by strong bases and essentially the same amount can be used for adsorption of weak bases. This high level of adsorption can only be achieved, however, if the adsorbed weak base is strong enough, if the polymer is sufficiently elastic and if the solvent does not compete too strongly for the binding sites. These results may explain why the maximum binding capacities obtained from isotherm measurements are usually not equal to the total amount of available binding sites. This study confirms the usefulness of nonimprinted polymers at high loadings.
Típus:
Article
PeerReviewed
Formátum:
text
Azonosító:
Dorkó, Zsanett and Szakolczai, Anett and Verbić, Tatjana and Horvai, György (2015) Binding capacity of molecularly imprinted polymers and their nonimprinted analogs. JOURNAL OF SEPARATION SCIENCE, 38 (24). pp. 4240-4247. ISSN 1615-9306
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