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Functionality type analysis of carboxy‐terminated oligostyrenes by gradient high performance liquid chromatography
Author(s) -
Braun Dietrich,
Henze Inka,
Pasch Harald
Publication year - 1997
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1997.021981103
Subject(s) - chemistry , oligomer , elution , chromatography , polymerization , tetrahydrofuran , high performance liquid chromatography , mass spectrometry , desorption , column chromatography , radical polymerization , hexane , polymer chemistry , polymer , organic chemistry , solvent , adsorption
Carboxy‐terminated oligostyrenes, prepared by radical polymerization using a dicarboxy‐functional initiator, can efficiently be separated by gradient high performance liquid chromatography (HPLC). On a normal phase chromatographic system, comprising a silica gel stationary phase and a tetrahydrofuran‐hexane eluent, elution occurs in the order of increasing polarity of the oligomers and separation into non‐, mono‐, and dicarboxy oligomer fractions is obtained. The chemical structure of the different functionality fractions is determined by matrix assisted laser desorption/ionization mass spectrometry (MALDI‐MS). The results indicate that further functionality fractions in addition to the carboxy oligomers are formed, due to contamination of the initiator or side reactions during the polymerization process.