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Rapid Preparation of C 18 Monoliths for Micro‐column Separation Using Ultraviolet and Microwave Irradiation
Author(s) -
Bai Lianyang,
Gong Wenjun,
Duan Qirong,
Chen Jun,
Zhang Yuping
Publication year - 2012
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201200091
Subject(s) - chemistry , azobisisobutyronitrile , monolith , ethylene glycol dimethacrylate , monomer , ethylene glycol , ultraviolet , porosity , irradiation , alkyl , polymer chemistry , chemical engineering , chromatography , polymer , organic chemistry , catalysis , materials science , physics , optoelectronics , nuclear physics , engineering , methacrylic acid
An organic‐based monolith with long alkyl chain ligands was prepared by UV photo‐initiation using (a) 1‐octadecene as a functional monomer, (b) ethylene glycol dimethacrylate (EDMA) as the cross‐linking agent, (c) 1‐propanol, 1,4‐butanediol and dimethylformamide as triporogenic solvents, and (d) Irgacure 1800 as the initiator. The monoliths containing a high fraction of 1‐octadecene possessed a better total porosity, improved permeability, and result in faster separation. Similar monolithic capillary was quickly fabricated in 3 min by microwave irradiation using azobisisobutyronitrile as the thermal initiator. Conventional polyimide‐coated capillaries were used instead of expensive UV‐transparent capillaries in both methods.