Microporous-crystalline microfibers by eco-friendly guests: An efficient tool for sorption of volatile organic pollutants

Daniel, Christophe; Antico, Pasqualmorica; Yamaguchi, Hideaki; Kogure, Masami; Guerra, Gaetano

doi:10.1016/j.micromeso.2016.06.028

Cited by 22 publications

(17 citation statements)

References 49 publications

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“…As is well described in the literature, NC polymer samples can be useful for the removal of organic pollutants from water and air [ 20 , 21 , 22 ], in molecular sensors [ 18 , 23 ], in gas separation procedures [ 14 , 24 , 25 ], as support for catalysts [ 26 , 27 ] or even for chemical stabilization of unstable guest molecules [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Axial Orientation of Co-Crystalline Phases of Poly(2,6-Dimethyl-1,4-Phenylene)Oxide Films

et al. 2020

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Films exhibiting co-crystalline (CC) phases between a polymer host and low-molecular-mass guest molecules are relevant for many applications. As is usual for semi-crystalline polymers, axially oriented films can give relevant information on the crystalline structure, both by Wide Angle X-ray diffraction fiber patterns and by polarized Fourier-transform infrared spectroscopy. Axially oriented CC phases of poly(2,6-dimethyl-1,4-phenylene)oxide (PPO) with 1,3,5-trimethylbenzene (mesitylene) can be simply obtained by the stretching of CC PPO films. In fact, due to the plasticization effect of this highly boiling guest, PPO orientation can occur in a stretching temperature range (170–175 °C) nearly 50 °C lower than that generally needed for PPO films (220–230 °C). This low stretching temperature range allows avoidance of polymer oxidation, as well as formation of the mesomorphic dense γ PPO phase. Axially oriented CC phases of PPO with toluene, i.e., with a more volatile guest, can be instead obtained by the stretching (in the same low temperature range: 170–175 °C) of CC PPO blend films with polystyrene.

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Section: Introductionmentioning

confidence: 99%

Axial Orientation of Co-Crystalline Phases of Poly(2,6-Dimethyl-1,4-Phenylene)Oxide Films

et al. 2020

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“…Of course, the higher apparent diffusivities observed with aerogels are due to the higher sample porosity. It is also worth adding that the aerogel sorption kinetics of VOC from aqueous solutions can be further increased by increasing the aerogel hydrophilicity through a selective sulfonation of the aerogel amorphous phase …”

Section: Resultsmentioning

confidence: 99%

Nanoporous Crystalline Polymer Materials for Environmental Applications

Daniel

Guerra

2016

Macromolecular Symposia

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Nanoporous crystalline phases can be obtained with syndiotactic polystyrene (s-PS) and poly(2,6-dimethyl-1,4-phenylene)oxide (PPO) materials characterized by a large variety of morphologies such as film, powder, or aerogel.\ud These nanoporous crystalline materials are characterized by a high sorption capacity of volatile organic compounds (VOC) also when present in traces in air and water and thus are potentially interesting for environmental applications such as air/water purification. Different aspects relative to the structure and the sorption properties of these innovative polymeric materials are presented in this report

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“…The polymeric NC phases are also particularly relevant since they can absorb suitable guest molecules, even at low activity from water and air, and can be useful for many application fields like water and air purification [24,[32][33][34][35][36][37][38][39], molecular separation [40] as well as molecular sensors [41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Absorption and Isomerization of Azobenzene Guest Molecules in Polymeric Nanoporous Crystalline Phases

et al. 2021

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PPO co-crystalline (CC) films including azobenzene guest molecules have been prepared and characterized by WAXD, FTIR and UV-Visible measurements. Isomerization reactions of azobenzene (photo-induced trans to cis and spontaneous cis to trans) included in α and β nanoporous-crystalline (NC) phases leading to CC phases, or simply absorbed in amorphous phase have been studied on thick and thin films. Spectroscopic analysis shows that photo-isomerization of azobenzene occurs without expulsion of azobenzene guest molecules from crystalline phases. Sorption studies of α and β NC films immersed into photo-isomerized azobenzene solution reveal a higher selectivity of the β NC phase toward cis azobenzene isomer than the α NC phase, inducing us to propose the β NC phase as particularly suitable for absorbing spherically bulky guest molecules.

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Microporous-crystalline microfibers by eco-friendly guests: An efficient tool for sorption of volatile organic pollutants

Cited by 22 publications

References 49 publications

Axial Orientation of Co-Crystalline Phases of Poly(2,6-Dimethyl-1,4-Phenylene)Oxide Films

Axial Orientation of Co-Crystalline Phases of Poly(2,6-Dimethyl-1,4-Phenylene)Oxide Films

Nanoporous Crystalline Polymer Materials for Environmental Applications

Absorption and Isomerization of Azobenzene Guest Molecules in Polymeric Nanoporous Crystalline Phases

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