Porogen effects in synthesis of uniform micrometer-sized poly(divinylbenzene) microspheres with high surface areas

Synthesis, characterization and adsorption performance of a novel post-crosslinked adsorbent

“…For PDHT-1, it can be seen that the two characteristic bands for residual vinyl groups (CH@CH 2 ) at 1630 and 990 cm À1 almost disappeared after post-crosslinking reaction, and the peak at 902 cm À1 is also weakened. The phenomenon was in good agreement with other reports [19,23,27], which demonstrated that residual vinyl groups in starting polymeric resins were consumed during the reaction with the help of anhydrous ferric chloride. Table 1 lists some important characteristics of adsorbent PDHT-1, PDHT-2 and XAD-4.…”

“…Recently, Yan's group [22] and Jerabek's group [20] investigated the post-crosslinking of the starting macroporous styrene-divinylbenzene copolymers via pendant vinyl groups using anhydrous ferric chloride as catalyst. Hao et al have synthesized the uniform micrometer-sized polydivinylbenzene microspheres with high surface areas via the Friedel-Crafts catalyst of anhydrous aluminum chloride [23]. However, the research of adsorption performance and applicability in chemical effluent treatment has been rarely recorded in the literature, despite the fact that such materials may be of more generic value in industry.…”

Porous polymer particles—A comprehensive guide to synthesis, characterization, functionalization and applications

“…Finally, thermal treatment allowed them to obtain rather monodisperse poly(HEMA) beads with varying porous nature. A report from Gong et al [129] further demonstrated the importance of the hydrophobicity of the monomer phase by studying the effect of the porogen nature. In a study with 6 different porogens, it has been shown that the CV of DVB emulsions can be reduced from 23.7 to 8.8% when tetrahydrofuran (THF) and heptane were used respectively.…”

Design and synthesis of cauliflower-shaped hydroxyl functionalized core-shell polymer

“…Monomer-crosslinker feed composition, [24,25] crosslinker (hydrophilic/hydrophobic) [26,27], and porogen (type/concentration) [28,29] are important parameters in controlling the desired polymer properties such as reactivity, pore volume, pore size, morphology (conglomerated/non-conglomerated), particle size, strength, and stiffness of the beaded polymer. In the present work, methyl methacrylate copolymers were synthesized by suspension polymerization by varying the crosslinkers, porogens, and crosslink densities to obtain high surface area and porous polymer which was used as a core polymer in core-shell approach.…”