Facile Visible‐Light‐Induced Preparation and Hydrophobization of Porous polyEGDMA and polyTEGDMA Thick Monoliths

Abstract

The simple low‐cost method for synthesis and post‐functionalization of thick macroporous polymer monoliths was proposed and realized by example of obtaining and hydrophobization of monoliths based on mono‐ and triethylene glycol dimethacrylates. Described procedures comprise using of ubiquitous visible‐light projection system and single photoinitiator (9,10‐phenanthrenequinone) in both cases. This approach eliminates the need in “material” photomasks and permit to operate with computer generated virtual photomask to form the pattern of functionalization. Macroporous polymer monoliths of 2 and 4 mm in thickness with a system of interconnected pores were synthesized and hydrophobized. The thick layers of functionalized porous polymer with wetting pattern through the entire sample thickness with the water contact angle for hydrophobic parts reaching120–125° were obtained. POLYM. ENG. SCI., 60:682–689, 2020. © 2020 Society of Plastics Engineers

Creation of periodic structures in a thick photopolymerizing layer

“…With a significant excess of the NC displaced into the shadow areas, the conditions for the formation of a polymer material with a system of interconnected open pores between the monolithic regions can be implemented 36,37,45 . On their basis, through local photochemical modification, it is possible to synthesize porous materials with inhomogeneous functionality 46,47 . Creation of such materials and composites, as well as nanostructures, is relevant for solving problems of environmental remediation, wastewater treatment, production and storage of renewable and clean energy, as well as solving environmental problems 48–52 …”

“…36,37,45 On their basis, through local photochemical modification, it is possible to synthesize porous materials with inhomogeneous functionality. 46,47 Creation of such materials and composites, as well as nanostructures, is relevant for solving problems of environmental remediation, wastewater treatment, production and storage of renewable and clean energy, as well as solving environmental problems. [48][49][50][51][52] 5 | CONCLUSION Thus, in weakly absorbing photopolymerizing compositions, self-channeling of radiation is implemented not only for solitary laser beams, but also for periodic intensity distributions of incoherent light.…”

Complete and Versatile Post‐Synthetic Modification on Iron‐Triazole Spin Crossover Complexes: A Relevant Material Elaboration Method

“…In addition, the PSM reaction allows to prepare materials with functional groups that cannot be obtained by a direct approach. [17][18][19][20][21][22] This is illustrated by the preparation of functionalized MOF in which the thermal process required to form the material is not compatible with a diversity of organic functions. The PSM method is also an attractive method for its possibility to create a diversity of materials from the same "parent" material.…”

“…Post‐synthetic method can be defined as a chemical modification on a fabricated material rather than using the molecule precursors. In addition, the PSM reaction allows to prepare materials with functional groups that cannot be obtained by a direct approach [17–22] . This is illustrated by the preparation of functionalized MOF in which the thermal process required to form the material is not compatible with a diversity of organic functions.…”