Robust polybenzimidazole (PBI) hollow fiber membranes for organic solvent nanofiltration

Tashvigh, Akbar Asadi; Chung, Tai Shung

doi:10.1016/j.memsci.2018.11.048

Cited by 78 publications

(37 citation statements)

References 36 publications

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“…Iqbal et al [40] reported the trend of TG curve for Celazole PBI under nitrogen atmosphere for an heating rate of 10 °C min −1 : also in this case they observed a first decrease in weight for a temperature lower than 300 °C due to the presence of solvent in the polymer. Furthermore, several literature data confirm the absence of a plateau in the TG curve for temperatures up to 1000 °C [39,41,42].…”

Section: Tga Results and Activation Energysupporting

confidence: 58%

Thermochemical characterization of polybenzimidazole with and without nano-ZrO2 for ablative materials application

Paglia

Genova

Bracciale

et al. 2020

J Therm Anal Calorim

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During the ballistic atmospheric re-entry, a space vehicle has to withstand huge thermo-mechanical solicitations because of its high velocity and the friction with the atmosphere. According to the kind of the re-entry mission, the heat fluxes can be very high (in the order of some MW m−2) ;thus, an adequate thermal protection system is mandatory in order to preserve the structure of the vehicle, the payload and, for manned mission, the crew. Carbon phenolic ablators have been chosen for several missions because they are able to dissipate the incident heat flux very efficiently. Phenolic resin presents satisfying performance but also environmental drawbacks. Thus, a more environmental-friendly solution was conceived: a high-performance thermoplastic material, polybenzimidazole (PBI), was employed instead of phenolic resin. In this work PBI-ablative material samples were manufactured with and without the addition of nano-ZrO2 and tested with an oxyacetylene flame. For comparison, some carbon-phenolic ablators with the same density were manufactured and tested too. Thermogravimetric analysis on PBI samples was carried out at different heating rates, and the obtained TG data were elaborated to evaluate the activation energy of PBI and nano-filled PBI. The thermokinetics results for PBI show an improvement in thermal stability due to the addition of nano-ZrO2, while the oxyacetylene flame test enlightens how PBI ablators are able to overcome the carbon phenolic ablators performance, in particular when modified by the addition of nano-ZrO2.

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Section: Tga Results and Activation Energysupporting

confidence: 58%

Thermochemical characterization of polybenzimidazole with and without nano-ZrO2 for ablative materials application

Paglia

Genova

Bracciale

et al. 2020

J Therm Anal Calorim

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“…PBI has high T g (410 -430°C), good mechanical properties, and strong size-sieving ability derived from the ]#] stacking and H-bonding interactions. 32,114,[162][163][164][165] However, PBI is not stable in NMP, DMF, and DMAc. 111,166 Therefore, a variety of cross-linking methods have been developed to improve chemical stability as well as the size-sieving ability.…”

Section: Post-cross-linked Polymersmentioning

confidence: 99%

“…5C). 32 PBI can also be cross-linked using trimesoyl chloride (TMC), 34,168 yielding a robust membrane. Fig.…”

Section: Post-cross-linked Polymersmentioning

confidence: 99%

“…5 (A) Reaction mechanism of PBI interaction with acids such as H2SO4 using Hbonding and proton transfer mechanisms, (B) changes in d-spacing for PBI and H2SO4 cross-linked PBI hollow fibres (HF) using XRD, and (C) MWCO measurement for PBI and H2SO4 cross-linked PBI using PEG isomers. 32 Copyright 2019, Elsevier. (D) Relationship between solvent permeance against Hansen solubility parameter :^p), viscosity (<), and molar volume (V) of solvent.…”

Section: Post-cross-linked Polymersmentioning

confidence: 99%

“…Finally, we present the emerging 2D materials for this application. API or key intermediate purification [30][31][32][33][34][35][36][37][38] Tetracycline/ Mepenzolate/ Chlorhexidine from solvents Impurity removal 39,40 Genotoxic impurity removal Catalyst recovery [41][42][43] Pd(II)acetate from solvents Peptides separation 44 Peptides from solvents Stereoselective separation [45][46][47][48] (R)-1-phenylethanol over (S)-1-phenylethanol 350-1000 6-10 Å* BTEX separation 4,49 p-Xylene/ o-xylene 5.5-6.5 Å* Dewaxing 50,51 Lube oil dewaxing 800-1250 Vegetable oil from hexane, Food product purification [52][53][54][55] Free fatty acid (FFA) from vegetable oil 150-900…”

Section: Introductionmentioning

confidence: 99%

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Designing organic solvent separation membranes: polymers, porous structures, 2D materials, and their combinations

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Polymeric Membranes

Nunes

2022

Macromolecular Engineering

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Polymeric membranes are constantly expanding their applications in separations going from desalination to hydrocarbon recovery and fractionation in the petrochemical industry. They are superior in terms of processability and scalability when compared to inorganic analogues. The diversity of chemistry allows to design membranes with tune porosity and functionality optimized for different applications. This article gives an overview of the main methods of membrane preparation and discusses the field challenges and opportunities. It considers how substituting the classical materials by more stable ones can open the door for applications in the chemical industry, how building blocks with preformed cavities can increase selectivity to level not demonstrated before, and how the criterion of sustainability is changing the strategies, materials, and solvents in the membrane fabrication.

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Robust polybenzimidazole (PBI) hollow fiber membranes for organic solvent nanofiltration

Cited by 78 publications

References 36 publications

Thermochemical characterization of polybenzimidazole with and without nano-ZrO2 for ablative materials application

Thermochemical characterization of polybenzimidazole with and without nano-ZrO2 for ablative materials application

Designing organic solvent separation membranes: polymers, porous structures, 2D materials, and their combinations

Polymeric Membranes

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