Sorption of organic vapours by macroporous and hypercrosslinked polymeric adsorbents

Swellable functional hypercrosslinked polymer networks for the uptake of chemical warfare agents

“…34 Similarly, modification of HCPs with imidazolium ionic liquids helped to increase polarity for enhanced adsorption of catechin from herbal plants. 35 The propensity of HCPs to swell has led their use in a number of applications including the trapping of organic vapors, 36 ion exchange, 37,38 removal of toxic trace metals, 39,40 solid phase extraction, 41 and recovery of organic compounds from water. 42,43 Knitting of the triptycene monomer can produce HCPs which show high adsorption for solvents including DMSO, toluene, and ethyl acetate, with a 30 times increase in the mass of the polymer observed for adsorption of chloroform.…”

Chemical modification of Amberlite XAD-4 by carbonyl groups for phenol adsorption from wastewater

“…Their pore structure can be easily regulated by adjusting the crosslinking reagents and porogens; their surface chemistry can be easily modified by using co-monomers with desired functional groups in copolymerization or by a subsequent particular chemical reaction of the synthesized polymer [8][9][10]. Moreover, the macroporous polymeric adsorbents can be easily regenerated by some typical solvents such as ethanol, acetone, dilute sodium hydroxide aqueous solution, dilute hydrochloric acid aqueous solution or by a relatively mild warming-up procedure [11][12][13]. Therefore, macroporous polymeric adsorbents are attractive column packing materials in high-performance liquid chromatography (HPLC), ion size-exclusion chromatography materials and solid-phase extraction materials for gases, organic contaminants and organic vapors [14,15].…”

Adsorption properties of tea polyphenols onto three polymeric adsorbents with amide group

“…There are many methods and techniques employed to extract TP from tea, and adsorption based on polymeric adsorbents is the most prominent due to their favorable stability, large adsorption capacity, good selectivity, and structural diversity [5][6][7][8][9][10][11][12][13]. To obtain larger adsorption capacity and better selectivity for a specific organic compound, chemical modification of ordinary polymeric adsorbents is often adopted by introducing some special functional groups onto the matrix of the adsorbents [14][15][16][17]. These introduced functional groups will modify the chemical composition of the adsorbent surface, and hence improve the adsorption behavior for organic compounds.…”